Agrocybe vervacti (Fries) (6) = Galerina sp.

All characters observed in the collection (COLENSO b 71) clearly indicate that this fungus must be placed in Galerina, it being one of the most common species of this genus in New Zealand.

Collybia readii Stevenson (29 D) Fig. 23 = Calocybe readii (Stevenson) comb. nov. (Basionym: C. readii Stevenson, Kew Bull. 19: 9, 1964)

Spores elliptical or slightly subamygdaliform, hyaline, neither amyloid nor dextrinoid, smooth, 4-5 X 2-2.5 µ. Cystidia none. Cuticle a cutis consisting of repent, cylindrical, thin-walled, non. gelatinised hyphae, clamp connections present.

Leucopaxillus waiporiensis Stevenson (29 D) Fig. 28 = Cantharellula waiporiensis (Stevenson) comb. nov. (Basionym: L. waiporiensis Stevenson, Kew Bull. 19: 19, 1964)

Spores subfusoid, amyloid, hyaline, smooth, 9.5-12 X 3.5-4.5 µ. Cystidia none. Cuticle a cutis consisting of regularly arranged, cylindrical, repent, clamp-bearing hyphae, encrusted with brownish pigment.

Hygrophorus elsae Stevenson (28 D) = Cantharellus elsae (Stevenson) comb. nov. (Basionym: H. elsae Stevenson, Kew Bull. 16: 375, 1962)

A redescription of this species will be published by McNabb in the near future.

Pleurotus cocciformis Berkeley (1 D, 16) = Chaetocalathus cocciformis (Berkeley) comb. nov. (Basionym: Agaricus (Pleurotus) cocciformis Berk. in Hook.f., Fl. Novae-Zelandiae 2: 174, 1855)

Despite the poor type material (New Zealand, Bay of Islands, 714) the taxonomic position of this species was finally resolved with the aid of additional collections. Our present knowledge indicates that this distinct species occurs exclusively on rotten wood of Vitex lucens.

Fig. 1 = Clitocybe albida (Stevenson) comb. nov. (Basionym: O. albida Stevenson, Kew Bull. 19: 12, 1964)

The spores are oval, smooth, neither amyloid nor dextrinoid, thin-walled, without germ-spore, 5-5.5 X 3-3.5 µ. Cystidia none. Cuticle consists of cylindrical, hyaline, nongelatinised hyphae, 3-6 µ. diam., with clamp-connections.

Fayodia grisella Stevenson and Taylor (29 D) Fig. 12 = Clitocybula grisella (Stevenson and Taylor) comb. nov. (Basionym: F. grisella Stevenson and Taylor, Kew Bull. 19: 47, 1964)

Spores oval to almost round, hyaline, amyloid, smooth, 5-6.5 X 4-5.5 µ (2-spored : 5.5-6 X 7 µ). Cheilocystidia present but not distinct. Caulocystidia club-shaped or somewhat irregular, thinwalled, distinctly coloured by a brown, plasmatic pigment. Cuticle of repent, cylindrical hyphae forming a cutis, with scattered club-shaped or fusoid, suberect dermatocystidia filled with a brown coloured cell sap, with clamp connections.

Marasmius drucei Stevenson (29 D) Fig. 7 = Collybia drucei (Stevenson) comb. nov. (Basionym: M. drucei Stevenson, Kew Bull. 19: 40, 1964)

Cuticle of interwoven, cylindrical, partially gelatinised hyphae with clamp connections. Spores comma-like, hyaline, neither amyloid nor dextrinoid, smooth, 7.5-9 X 3.5-4 µ. Cystidia none.

Marasmius kidsonii Stevenson (29 D) Fig. 14 Collybia kidsonii (Stevenson) comb. nov. (Basionym: M. kidsonii Stevenson, Kew Bull. 19. 40, 1964)

This species was originally found in lawns under Photinia, an introduced rosaceous plant. We are inclined to consider C. kidsonii an introduced fungus as well.

Crinipellis novae-zelandiae Stevenson (29 D) Fig. 18 = Collybia novae-zelandiae (Stevenson) comb. nov. (Basionym: C. novae-zelandiae Stevenson, Kew Bull. 19: 45, 1964)

After careful study of the type material it is evident that this peculiar agaric is not correctly placed in Crinipellis. Although we twice collected this species, it is with some hesitation that we transfer this striking fungus to Collybia, and we anticipate that further changes will be made to its generic position.

Collybia nummularia (Fries) (8, 16) Fig. 19 = Pluteus sp.

The fragments of this collection (COLENSO b 741) are in poor condition but sufficient to confirm the identification. The spores are subglobose, smooth, pinkish, 7-8 X 5.5-7 µ.

Collybia radicata (Relhans) (6,16) Fig. 22 = Oudemansiella sp.

The spores of this collection (COLENSO b 356) are ± globose, hyaline to yellowish, neither amyloid nor dextrinoid, 9.5-13 µ diam. There are some similarities with the true European O. radicata, but unfortunately the poor state of the material prevents a comparison of all characters.

Crinipellis readii Stevenson (29 D) Fig. 23 = Collybia stevensonii Horak nom. nov. (non Collybia readii Stevenson, syn.)

Spores comma-like, hyaline, neither amyloid nor dextrinoid smooth, 7.5-9 X 3.5-4 µ. Cheilocystidia numerous, fusoid, with prolonged neck or irregularly branched apically, hyaline, 25-40 X 5-10 µ. Cheiocystidia cylindrical, thin-walled, densely covering the upper part of the stipe. Cuticle a cutis of irregularly interwoven cylindrical hyphae, encrusted with brown pigment, clamp connections present.

Collybia subclusilis Stevenson (29 D) Fig. 25 = Marasmius oreades (Fries) Earle

Spores almond-shaped to sublimoniform, hyaline, neither amyloid nor dextrinoid, smooth, 8-11.5 X 4.5-5.5 µ. This species was probably introduced with seeds (see habitat) and has to be regarded as a synonym of M. oreades.

Crinipellis vinacea Stevenson (29 D) Fig. 27 = Collybia vinacea (Stevenson) comb. nov. Basionym: C. vinacea Stevenson, Kew Bull. 19: 44, 1964)

Spores elliptical, hyaline, neither amyloid nor dextrinoid, smooth, 7-8.5 X 3.5-4 µ. Cheilocystidia numerous, fusoid or ampullaceous, thin-walled, 25-40 X 5-9 µ. Cheiocystidia similar. Cuticle consisting of irregularly interwoven, cylindrical, externally pigmented hyphae, sometimes branched at the tips, without any dermatocystidia or hair-like elements, clamp connections present.

Marasmius cockaynei Stevenson (29 4) Fig. 4 = Collybiopsis cockaynei (Stevenson) comb. nov. (Basionym: M. cockaynei Stevenson, Kew Bull. 19: 39, 1964)

All microsopical characters clearly indicate that this fungus belongs to Collybiopsis. Cuticle of pileus consists of diverticulate cells, with clamp connections. The spores are elliptical or sligthly comma-like, hyaline, neither amyloid nor dextrinoid, smooth, 7.5-10 X 3-3.5 µ. Diverticulate cheilo- and caulocystidia present.

Collybia rimutaka Stevenson (29 D) Fig. 23 = Collybiopsis rimutaka (Stevenson) comb. nov. (Basionym: C. rimutaka Stevenson, Kew Bull. 19: 8. 1964)

Spores 4.5-6.5 X 2.5-3 µ, neither amyloid nor dextrinoid, hyaline, smooth. Cuticle of irregular, broom-like cells, membranes encrusted with brown pigment, dextrinoid in Melzer's solution, clamp connections numerous. Cheilocystidia present. A very common species growing in all habitats in New Zealand.

Crepidotus pezizoides Fries (6) Fig. 20 = Phialocybe sp.

Only spores (elliptical, minutely warted, 6-8 X 4-5 µ) could be identified from the fragments of the collection (COLENSO b 65). Unfortunately no other microscopical elements such as cheilocystidia, which are essential for correct indentification, could be found. More than half a dozen species of Phialocybe are known from New Zealand.

Crepidotus variabilis (Persoon) (6) Fig. 27 = Phialocybe sp.

Microscopical examination of this material (COLENSO b 385) revealed that this agaric is an undescribed species of Phialocybe. Unfortunately, its macroscopical characters are not fully known.

Baeospora clastotricha Stevenson (29 D) Fig. 3 = Cystoderma clastotrichum (Stevenson) comb. nov. (Basionym: B. clastotricha Stevenson, Kew Bull. 19: 56, 1964).

This is undoubtedly a member of the genus Cystoderma which is represented in New Zealand by more than four species, according to our present knowledge. Cuticle consists of an epithelium formed by oval or roundish cells, with clamp, connections. Spores oval, hyaline, smooth, amyloid, 3.5-4.5 X 2.5-3 µ. Cystidia none.

Resupinatus dorotheae Stevenson (29 D) Fig. 7 = Delicatula dorotheae (Stevenson) comb. nov. (Basionym: R. dorotheae Stevenson, Kew Bull. 19: 23, 1964)

The almond-shaped spores (10.5-12 X 5.5-6 µ), structure of the cuticle, and habit of the fungus, place this species in Delicatula rather than Resupinatus.

Tricholoma hemisphaericum Stevenson (29 D) Fig. 13 = Dermoloma hemisphaericum (Stevenson) comb. nov. (Basionym: T. hemisphaericum Stevenson, Kew Bull. 19: 14, 1964)

Cuticle of smooth, thin-walled cells forming an hymeniderm, coloured with a brown, plasmatic pigment, clamp connections present. Spores oval, hyaline, amyloid, smooth, 5-6 X 3.5-4 µ. Cheilo- and pleurocystidia none.

Tricholoma murinum Taylor and Stevenson (29 D) Fig. 17 = Dermoloma murinum (Taylor and Stevenson) comb. nov. (Basionym: T. murinum Taylor and Stevenson, Kew Bull. 19: 17, 1964)

Cuticle cellular to hymeniform with epimembranous pigment encrusted cell walls, clamp connections present. Spores oval, hyaline, neither amyloid nor dextrinoid, smooth, 5.5-7 X 3.5-4 µ. Cystidia none.

Entoloma placidum (Fries) (11,16,27) Fig. 21 = Pluteus readii Stevenson

The examined material (COLENSO b 1204) agrees with this native Pluteus (see there) in all characters.

Flammula fusa (Batsch) (6) Fig. 11 = Gymnopilus crociphyllus (Cooke and Massee) Pegler 1965.

In spite of the fully destroyed specimen (COLENSO b 243), we are quite convinced that the residual rust-brown, warted spores with a distinct, smooth plage (6-8 X 4-5 µ) are those of the above species. This Gymnopilus is one of the most common agarics in New Zealand.

Flammula purpureonitens Cooke and Massee (11,16)

Pegler (1965) examined the type which was collected in Australia and transferred the species to Gymnopilus. We are inclined to put it in Cortinarius.

Flammulina glutinosa Stevenson (29 D) Fig. 11 = Mycena leiana (Berkeley) Saccardo.

This is a unique, glutinous, deep orange coloured Mycena known only from North America. We compared the New Zealand specimen with material collected in the U.S. and did not find a single character separating the two. It may well be that M. leiana was accidentally introduced into New Zealand and should therefore be tentatively included in the list of the adventitious fungi.

Mycena morris-jonesii Stevenson (29 D) Figs 16, 17 = Galactopus morris-jonesii (Stevenson) comb. nov. (Basionym: M. morris-jonesii Stevenson, Kew Bull. 19: 52, 1964)

Spores oval, hyaline, amyloid, smooth, 7.5-9 X 4.5-6 µ. Cheilo- and pleurocystidia fusoid or awl-shaped, thin-walled, coloured with a reddish plasmatic pigment, 50-70 X 10-15 µ.

Galera tenera (Fries) (8,16) Fig. 26 = Psilocybe sp.

The material (BERGGREN 60) consists of badly preserved carpophores possessing large spores 18-20 X 10-11 µ, with a smooth brown wall and prominent germ pore. According to the scanty data this species belongs to Psilocybe, rather than Galerina or Conocybe.

Hebeloma strophosum (Fries) Fig. 25 = Agrocybe sp.

The characters of a collection under this name at Kew ("New Zealand") indicate that this material is not a Hebeloma. Because of the still visible ring and smooth spores with a broad germ pore, this fungus is placed in Agrocybe. In the absence of data on the colour and other ephemeral characters of fresh carpophores, a reliable identification cannot be made.

Panellus atrofulvus Stevenson (29 D) Fig. 2 = Heimiomyces atrofulvus (Stevenson) comb. nov. (Basionym: P. atrofulvus Stevenson, Kew Bull. 19: 29, 1964)

Spores cylindric to slightly phaseoliform, hyaline, amyloid, thin-walled, without germ-pore, 7.5-10.5 X 3.5-4.5 µ. Cheilocystidia none. Caulocystidia irregularly branched, diverticulate, thick-walled, membrane coloured with brown pigment, weak reaction in Melzer's solution, clamp connections present.

Tectella luteohinnulea Stevenson (29 D) Fig. 15 = Hohenbuehelia luteohinnulea (Stevenson) comb. nov. (Basionym: T. luteohinnulea Stevenson, Kew Bull. 19: 30, 1964)

There is no reason why this species should have been described in Tectella, especially seeing that the "veil", which is specific to Tectella, is apparently formed by the remnants of a web-like cover produced by insects.

Panellus metuloideus Stevenson (29 D) Fig. 16 = Hohenbuehelia metuloidea (Stevenson) comb. nov. (Basionym: P. metuloideus Stevenson, Kew Bull. 19: 27, 1964)

A glance at the illustrations shows that this species clearly has to be transferred to Hohenbuehelia.

Hohenbuehelia parsonsii Stevenson (29 D) = Hohenbuehelia petaloides (Fries) Schulzer

This species may be introduced as it is frequently found on ruderal places or in lawns.

Hygrophorus cyaneus Berkeley (3 D, 4, 16, 27) = Entoloma hochstetteri (Reichardt) Stevenson

No specimens have been preserved but a well executed painting of this distinctive fungus by J. V. Haast exists at Kew. For further details see Stevenson (27).

213. X ? Hygrophorus niveus Fries (8)

It is quite likely that this record represents Hygrocybe mavis (Stevenson) Horak, which macroscopically resembles H. niveus.

Omphalina roseola Stevenson (29 D) Fig. 24 = Hygrotrama roseolum (Stevenson) comb. nov. (Basionym: O. roseola Stevenson, Kew Bull. 19: 12, 1964)

Spores, oval to subglobose, hyaline, neither amyloid nor dextrinoid, smooth, 5.5-6.5 X 4-5 µ. Cheilocystidia club-shaped, thin-walled, non-pigmented, 20-45 X 8-17 µ. Cuticle hymeniform, consisting of club-shaped, thin-walled cells, encrusted with epimembranous pigment, clamp connections none.

Hypholoma fasciculare (Fries) (1, 16) Fig. 9 = Hypholoma acutum (Cooke) Horak

All characters of this collection (COLENSO b 408) correspond well with the type of H. acutum, a very common species in the forests of New Zealand.

Pluteus purpuratus Stevenson (26D) Fig. 22 = Lepiotula purpurata (Stevenson) comb. nov. (Basionym: P. purpuratus Stevenson, Kew Bull. 16: 73, 1962)

Spores dextrinoid, indistinctly spurred, smooth, germ pore none, 5.5-6 X 3.5-4 µ. Cheilo- and pleurocystidia not observed (type material in fragmentary condition). The dimensions of the spores given by Stevenson are based on measurements of alien Psathyrella spores. The free gills were obviously the reason for assigning the fungus to Pluteus.

Leucopaxillus otagoensis Stevenson (29 D) Fig. 20 = Clitocybe clitocyboides (Cooke and Massee) Pegler, 1965

It is difficult to see why this fungus was originally described in Leucopaxillus for apart from the decurrent gills, it has nothing in common with that genus. C. clitocyboides closely resembles C. hydrogramma (Fries) Singer even to the distinct chlamydospores embedded between hyphae of the cuticle. All characters of the N.Z. species correspond well with those of the type from Australia.

Resupinatus tristis Stevenson (29 D) Fig. 26 = Marasmiellus tristis (Stevenson) comb. nov. (Basionym: R. tristis Stevenson, Kew Bull. 19: 23, 1964)

Spores almond-shape, hyaline, neither amyloid nor dextrinoid, smooth, 8-10 X 5-6 µ. Cheilocystidia broom-like or diverticulate. Cuticle consisting of diverticulate cells, clamp connections present.

Resupinatus violaceo-griseus Stevenson (29D) Fig. 28 = Marasmiellus violaceo-griseus (Stevenson) comb. nov. (Basionym: R. violaceo-griseus Stevenson, Kew Bull. 19: 22, 1964)

Spores elliptical to subcylindrical, hyaline, neither amyloid nor dextrinoid, smooth, 5-6.5 X 2.5-3 µ. Cheilocystidia broom-like. Cuticle of heavily diverticulate cells, clamp connections present.

Lentinus delicatus Stevenson (29 D) Fig. 6 = Marasmius delicatus (Stevenson) comb. nov. (Basionym: L. delicatus Stevenson, Kew Bull. 19: 32, 1964)

Cuticle of hymeniform cells, walls smooth, not broom-like, clamp connections present. Spores 8-10 X 3-3.5 µ, comma-like to fusoid, hyaline, smooth, neither amyloid nor dextrinoid. Cheilo- and caulocystidia present.

Tricholomopsis vinosa Stevenson (29 D) Fig. 27 = Melanoleuca vinosa (Stevenson) comb. nov. (Basionym: T. vinosa Stevenson, Kew Bull. 19: 7, 1964)

Spores oval, hyaline, weakly amyloid, minutely warted, no distinct plage, 5-6 X 3-3.5 µ. Cheilocystidia none. Pleurocystidia fusoid, apically encrusted with crystals, 30-40 X 4-6 µ. Cuticle of irregularly arranged short-celled hyphae, thin-walled, covered with brown epimembranous pigment. All hyphae bear clamp connections.

Mycena conicola Stevenson (29 D) Fig. 4 = Mycena aff. flos-nivium Kuhner

The type is poorly preserved but nevertheless several important details were obtained. According to these characters this fungus approaches M. flos-nivium which grows in Europe on rotten cones os spruce from late winter until spring. The New Zealand material was collected at the end of June, on cones of spruce. The structure of the cuticle and size and shape of the cheilocystidia and spores (110.-12 X 4.5-5 µ) support this identification. It is recommended that M. conicola be regarded as a synonym of M. flos-nivium and added to the list of exotic fungi in New Zealand.

Fayodia cystidiosa Stevenson (29 D) Fig. 6 = Mycena cystidiosa (Stevenson) comb. nov. (Basionym: F. cystidiosa Stevenson, Kew Bull. 19: 46, 1964)

This is a very peculiar species of the genus Mycena. The conspicuous cheilo- and pleurocystidia are apically ornamented with irregular thick-walled, hyaline excrescences. Spores 8.5-12 -X 6-7.5 µ, oval, hyaline, weakly amyloid, smooth.

Mycena mariae Stevenson (29 D) Fig. 15 = Galactopus morris-jonesii (Stevenson) Horak

Spores oval, hyaline, amyloid, smooth, 8-11.5 X 5-6 µ. Cheilo- and pleurocystidia fusoid or awl-shaped, thin-walled, filled with a reddish cell sap, 55-75 X 10-16 µ.

Fayodia ochracea Stevenson (29 D) Fig. 19 = Mycena ochracea (Stevenson) comb. nov. (Basionym: M. ochracea Stevenson, Kew Bull. 19: 47, 1964)

Spores oval to elliptical, hyaline, weakly amyloid, smooth, 8.5-10.5 X 5-6 µ. Cheilocystidia numerous, fusoid, irregularly branched or broom-like, hyaline, thin-walled, 25-50 X 5-10 µ. Possibly introduced.

Naucoria aurora Cooke and Massee (7 D) Fig. 2 = Hydrocybe sp.

The type material (Bergren 134) is in poor condition, but according to the spores which are rust-coloured, minutely warty, ellipsoid, 6.5-8 X 4.5µ, this species must be considered an Hydrocybe. Cystidia absent.

Naucoria nasuta (Kalchbrenner) (8,16) Fig. 18 = Galerina sp.

This collection (COLENSO 1039) corresponds in all characters with the material described in this list under No. 177. Spores almond-shaped, distinctly warted, with smooth plage, brown, 8-9.5 X 4.5-5 µ, sometimes with visible germ pore. Pleurocystidia fusoid, apically bifurcate, thin-walled, non-pigmented, with clamp connection, 45-60 X 12-18 µ.

Naucoria pediades (Fries) (6,16) Fig. 20 = Agrocybe pediades (Fries) Fayod

All characters of the N.Z. collection (COLENSO 269) are similar to those of this fungus in Europe. Probably another introduced fungus growing by preference in paddocks and lawns.

293. X A Naucoria semiorbicularis (Fries) (4,8,16) = Agrocybe semiorbicularis (Fries) Fayod

Although the material (BERGGREN 61) is half destroyed by insects all the diagnostic microscopical characters of this European species were found. It is apparently an introduced fungus in New Zealand.

Omphalia ? anthiceps Berkeley and Curtis (8, 16) Fig. 2 = Cystoderma clastotrichum (Stevenson) Horak

The microscopical as well as macroscopical characters of the collection (COLENSO b 1023) correspond in all details with this common New Zealand species of Cystoderma, which was originally described as Baeospora clastotricha Stevenson (see there).

Omphalia epichysium (Persoon) (6) Fig. 7 = Xeromphalina racemosa Stevenson

The original collection (COLENSO b 138, on logs in woods) is well preserved and there are no problems in identifying the specimen. The spores are strongly amyloid, oval, smooth, 4.5-5.5 X 4-4.5(5) µ and only slightly smaller than those of the type.

Omphalia stellata (Fries) (8,16) Fig. 25 = Mycena veronicae Stevenson

The identification of this material (COLENSO 545 b) is confirmed by the typical club-shaped cells in the cuticle filled with a brown cell sap, decurrent gills, and the ovoid spores.

Cantharellula foetida Stevenson (29 D) Fig. 10 = Omphalina foetida (Stevenson) comb. nov. (Basionym: C. foetida Stevenson, Kew Bull. 19: 18, 1964).

Cuticle of repent, cylindrical, interwoven hyphae forming a cubs, with epimembranous pigment, clamp connections none. Spores oval, hyaline, neither amyloid nor dextrinoid, smooth, 5.5-7 X 5 µ,. Cystidia none.

Clitocybe nothofaginea Stevenson (29 D) Fig. 18 = Omphalina nothofaginea (Stevenson) comb. nov. (Basionym: C. nothofaginea Stevenson, Kew Bull. 19: 5, 1964)

Cuticle consisting of cylindrical, non-gelatinised, clampless hyphae forming a cutis, with epimembranous pigment. Spores oval, hyaline, neither amyloid nor dextrinoid, smooth, 5-6 X 3-4 µ. Cystidia none.

Limacella macrospora Stevenson (26 D) = Oudemansiella macrospora (Stevenson) comb. nov. (Basionym: L. macrospora Stevenson, Kew Bull. 16: 68, 1962)

A full description of this species will be published later.

Panellus niger Stevenson (29 D) Fig. 10 = Hydropus sp.

Spores oval to elliptical, hyaline, weakly amyloid, smooth, 4-4.5 X 2-2.5 µ. Cystidia none. Cuticle with intermixed oleiferous hyphae showing in KOH a dark brown plasmatic pigment, with clamp connections.

264. + Panus purpuratus Stevenson (29 D)

Fig. 22 Spores allantoid, hyaline, neither amyloid nor dextrinoid, smooth, 5-6 X 1.5-2 µ. Cheilo- and pleurocystidia fusoid, thin-walled, without crystals, coloured with a yellow plasmatic pigment, 40-90 X 8-11 µ. Cuticle consisting of suberect fusoid or cylindrical cells forming a loose trichoderm, membrane of the hyphae not gelainised, with clamp connections.

Hypholoma glutinosum Massee (15 D) Fig. 12 = Pholiota glutinosa (Massee) comb. nov. (Basionym: H. glutinosum Massee, Kew Bull. 1898: 132, 1898)

Spores oval, brown, smooth, with broad and distinct germ-pore, 7.5-10 X 4-5.5 µ. Chrysocystidia fusoid, with a deep yellow-brown, plasmatic pigment in KOH, 40-60 X 9-14 µ.

Pholiota squarrosa (Fries) (12,16) = Gymnopilus sp.

From the preserved material (COLENSO 3850 B) referred to this species, only a few spores have been observed. These spores are distinctly warty, rust-brown, show a distinct plage, and are characteristic of Gymnopilus rather than any other genus.

Lentinellus cremeus Stevenson (29 D) Fig. 5 = Pleurocollybia cremea (Stevenson) comb. nov. (Basionym: L. cremeus Stevenson, Kew Bull. 19: 21, 1964)

It is difficult to comprehend why Stevenson placed this fungus, which is common in the New Zealand bush, in Lentinellus. All characters indicate an obvious relationship with Pleurocollybia, a genus not previously known from New Zealand. Spores roundish, hyaline, weakly amyloid, smooth, 2.5-3 X 2.5 µ.

Panellus roseolus Stevenson (29 D) Fig. 24 = Pleurotopsis roseola (Stevenson) comb. nov. (Basionym: P. roseolus Stevenson, Kew Bull. 19: 28, 1964)

Spores cylindrical or slightly allantoid, amyloid, smooth, 6.5-7 X 2.5-3.5 µ. Cheilocystidia none. Cuticle a thick layer of strongly gelatinised hyphae forming a cutis, clamp connections present.

Panellus subgriseus Stevenson (29 D) Fig. 26 = Pleurotopsis subgrisea (Stevenson) comb. nov. (Basionym: P. subgriseus Stevenson, Kew Bull. 19: 27, 1964)

Spores slightly allantoid to cylindrical, amyloid, hyaline, smooth, 7.5-10 X 3-4 µ. Cystidia none. Cuticle a cutis consisting of a thick layer of strongly gelatinised, cylindrical hyphae, clamp connections present.

Fig. 2 = Hohenbuehelia aff. nothofaginea Stevenson

The size and dimensions of the microscopical characters found in this collection (COLENSO 1007) are very similar to those of H. nothofaginea Stevenson.

Pleurotus bursaeformis (Berkeley) (11,16) = Hohenbuehelia bursaeformis (Berkeley) Reid, Kew Bull. 17: 304, 1963.

A detailed study of this polymorphic species which is widely distributed throughout the Pacific basin, will be published at a later date.

Pleurotus euphyllus Berkeley (9 D) = Hohenbuehelia bursaeformis (Berkeley) Reid. Type material: SINCLAIR 1860.

This is another synonym of the common New Zealand species H. bursaeformis (see there).

131. X ? Pleurotus guilfoylei Berkeley (8, 16)

There is no material from New Zealand, but examination of the type revealed the fact that Pl. guilfoylei must be considered a further synonym of Hohenbuehelia bursaeformis (Berkeley) Reid (see also Pegler, 1965).

Pleurotus salignus (Persoon) (8,16) Fig. 24 = Pleurotus sp.

The cylindrical spores of this collection (COLENSO b 876) are distinctly smaller (7-9 X 3-3.5 µ) than those of typical P. salignus. At the same time all characters of this species differ from those of other Pleurotus species hitherto found in New Zealand.

Pleurotus serotinus (Fries) (6) Fig. 25 = Hohenbuehelia nothofaginea Stevenson

After studying this collection (COLENSO b 72) we cannot see any differences between it and H. nothofaginea, a ubiquous fungus in the beech forests of New Zealand.

Pleurotus tasmanicus Berkeley (8,16) = Hohenbuehelia bursaeformis (Berkeley) Reid.

Because of the subglobose, spiny or warted spores and the short, fusoid and slightly thick-walled pleurocystidia this collection (COLENSO b 896) can be identified as H. bursaeformis. This collection has nothing in common with the type from Tasmania which is considered to be a synonym of Panellus diversipes (Berkeley) Pegler 1965.

Pluteus muscicola Stevenson (26 D) Fig. 17 = Pluteolus muscicola (Stevenson) comb. nov. (Basionym: P. muscicola Stevenson, Kew Bull. 16: 72, 1962)

Spores elliptic, rust: brown to ochraceous, smooth, with broad apical germ pore, 8-11 X 4.5-5.5 µ. Cuticle of articulate cells forming an hymeniderm, with brown plasmatic pigment, clamp connections none.

Tricholoma amyloideum Stevenson (29 D) = Porpoloma amyloideum (Stevenson) comb. nov. (Basionym: T. amyloideum Stevenson, Kew Bull. 19: 15, 1964)

This is the first record of the South American genus Porpoloma in New Zealand.

Cantharellula fistulosa Stevenson (29 D) = Pseudoarmillariella fistulosa (Stevenson) comb. nov. (Basionym: C. fistulosa Stevenson, Kew Bull. 19: 18, 1964)

Spores oval, hyaline, amyloid, smooth, 5-6 X 3.5-4 µ; cheilocystidia club-shaped, thin-walled, 20-55 X 10-18 µ with clamp connection at the basal septum; cuticle of interwoven, cylindrical hyphae, forming a cutis, with scattered dermatocystidia-like cells.

Fig. 2 = Rhodocybe albovelutina (Stevenson) comb. nov. (Basionym: L. albovelutinus Stevenson, Kew Bull. 19: 32, 1964)

There is no doubt that this species with pinkish, angular spores, 5.5-7 X 3.5-5 µ, has to be transferred to Rhodocybe.

Lepista muritai Stevenson (29 D) Fig. 17 = Rhodocybe muritai (Stevenson) comb. nov. (Basionym: L. muritai Stevenson, Kew Bull. 19: 7, 1964)

Cuticle consisting of cylindrical, not gelatinised, clamp connection-bearing hyphae, forming a cutis, interwoven with oleiferous vessels. Spores rough to minutely corrugated-angular, pinkish, oval, 6-7.5 X 3.5-4 µ. Cystidia none.

Lepista piperata Stevenson (29 D) Fig. 21 = Rhodocybe piperata (Stevenson) comb. nov. (Basionym: L. piperata Stevenson, Kew Bull. 19: 6, 1964)

Spores oval to elliptical, pinkish, rough, 7-10 X 5-6 µ. Cystidia none. Cuticle a cutis consisting of cylindrical, interwoven, thin-walled, clampless hyphae.

Stropharia lepiotaeformis Cooke and Massee (7 D) Fig. 14 = Lacrymaria sp. (= Str. lepiotoides C.&M., in herb.)

The type collection (BERGGREN 39) is in fragmentary condition. Careful examination showed that the black coloured spores are coarsely warted, with a prominent plage and mucronate germ pore, 10-12 X 6.5-7.5 µ. Some cylindrical or subfusoid cheilocystidia with inflated apices were also observed (55-65 X 10 µ). These peculiarities place this agaric in the genus Lacrymaria Patouillard. Unfortunately two problems remained unresolved. The first is whether this particular New Zealand form should be regarded as an independent species. During our collecting trips in New Zealand, we collected on two occasions a species closely related to L. velutina (S. F. Gray). In both cases the fungus grew along roadsides. The second unresolved problem is whether the fungus is introduced or indigenous.

Tricholoma brevipes (Bulliard) (1, 16) = Lepista sp.

The spores of this collection (COLENSO b 411) are neither amyloid nor dextrinoid, hyaline, warted, and measured about 5-6.5 X 3.5-4 µ. As the fruiting bodies formed fairy rings and grew in fields around Napier we suspect this fungus was introduced into New Zealand with grass seeds.

Tricholoma rutilans (Fries) (8,16) Fig. 24 = Gymnopilus crociphyllus (Cooke and Massee) Pegler

All characters of this collection (COLENSO b 972) correspond well with the type. It occurs both in Australia and New Zealand.

Tricholoma ornaticeps Stevenson (29 D) Fig. 19 = Tricholomopsis ornaticeps (Stevenson) comb. nov. (Basionym: T. ornaticeps Stevenson, Kew Bull. 19: 17, 1964)

Examination of the type material (together with additional collection made in New Zealand) justify this proposed combination. Spores oval to subcylindrical, neither amyloid nor dextrinoid, hyaline, smooth, 7-8.5 X 4-4.5 µ. Cheilocystidia conspicuous, thin-walled, with yellow plasmatic pigment in KOH, clamp connections present. Pleurocystidia none.

Volvaria parvula Weinmann ined. ? = Pluteus aff. velutinornatus Stevenson

The observed characters of this collection (COLENSO b 58) are similar to those of the above-mentioned species.