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Agrocybe praecox (Pers.) Fayod 1889

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Agrocybe praecox (Pers.) Fayod, Ann. Sci. Nat., Bot., 7e Sér. 9 358 (1889)
Agrocybe praecox (Pers.) Fayod 1889

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Exotic
Present
New Zealand
Political Region

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(Pers.) Fayod
Pers.
Fayod
1889
358
invalid publication, invalidly published
combination not explicitly made; early NZ material, retained here by Horak, was re-interpreted as Leucoagaricus holosericeus by Watling & Taylor; first authentic NZ record is Watling & Taylor, 1987
Fr.
ICN
species
Agrocybe praecox

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Agrocybe praecox (Pers.) Fayod 1889

Caespitose in Asparagus bed, Oratia, legit J. W. Endt. 27 ix 1965; PDD 24770. In soil with sawdust, garden cleared from manuka bush, south branch of Waianakarua River, 16 x 1966, legit A. Douglas, Taylor 317 & 318; in grass, Gudex Memorial Park, near Cambridge, Waikato District, 20 ix 1969, legit J. L. Austwick, Austwick 1879; in grass. Soil Research Station, Rukuhia, near Hamilton. 27 ix 1969, legit E. P. White, Austwick 1942; gregarious on ground. New Lynn, Auckland, 30 ix 1970, legit J. S. Cole, PDD 28569; on ground, New Lynn, Auckland, x 1970, legit J. S. Cole, Segedin 751; on ground under Quercus, Auckland University grounds, 3 x 1971, B.S. Parris, PDD 29685; on ground under Magnolia, Landscape Road, Auckland, 21 ix 1980, Segedin 1719; in coastal paddocks, with Lupinus arboreus Sims, grazed by cattle, vii 1982, legit L. R. B. Mann, Taylor 1254A; in bark covered garden. Old Biology Building, University of Auckland, viii 1982 and ix 1982, Taylor 1258 (A-C); on soil in picnic area, Huka Falls, 27 x 1982, Taylor 1261.
Description of New Zealand collections;-

 Pileus (20-) 33-80 mm, convex with inrolled margin, purplish brown when very young soon yellow ochre to yellowish, browning with age, smooth, texture of kid-glove; margin smooth with narrow greyish border where flesh is thin, when immature persistent purplish brown, often with velar remnants. Stipe 60-80 x 6-8 mm, equal or tapered upwards from swollen or bulbous base, annulate, whitish and striate at apex, yellowish below ring but browning on handling, solid then hollow, attached to conspicuous white mycelial cords at base; ring membranous, superior, whitish, darkening with age. Gills adnate-sinuate, crowded, pale cream-colour at first becoming pinkish brown-grey finally darkening. Flesh relatively thick, pale cream-colour with a grey line above gills, creamy white, fibrous in stipe. Smell sour.

Basidiospores deep brown in mass, 8-9.5(-10) x (4.5-)5-6 µm, ellipsoid, smooth, thick-walled, relatively strongly coloured in water and aqueous alkali solutions; germ-pore central, distinct. Basidia 4-spored, 20-25 x 6-7.5 µm. Cheilocystidia a mixture of clavate to vesiculose cells (30-45 x 18-20 µm) with a few ventricose cells 15-20 x 5-10 µm; pleurocystidia frequent, prominent, mucronate, lageniform or even ampulliform, 45-55 x 18-25 µm, sometimes with minute granulations at apex. Hymenophoral trama parallel with a few oleiferous hyphae. Pileipellis a palisadoderm of spheropedunculate cells 17-38 µm diam. Clamp-connections present.

Colenso b 283 cannot be added to this list meantime although Horak (1971b) states 'all found characters correspond well with those of the type' i.e., A. praecox.

A widespread agaric of gardens and fields in western Europe from late spring until summer even into late August in more northerly regions; probably introduced into New Zealand. Material has been compared with that from Europe (Scotland; Orton 2101-3 inci & Wat. 11745 in E). This is a world wide species of cultivated and disturbed areas: it is a rather variable species, or more likely a complex of taxa; see Walling, 1985. Cultural studies would be valuable. This species has been recorded by Colenso (1886) and figured by Massee (1898) The description is taken from Taylor's collections although the material in PDD accompanied by short descriptions agree in all major details.

A collection in PDD (on sawdust, Mt. Albert, Auckland City, ix 1969, legit K. R. W. Hammett, PDD 29208) thought to be A. praecox has processes on the pleurocystidia similar to, although less distinct, than those in A. arvalis. This type of pleurocystidia is also found in A. acericola (Peck) Singers. Overholts and the Hammett collection may represent this widespread N. American taxon. See above.

A collection from Otago (amongst Ammophila in dunes, near Brighton, 28 xii 1969, Austwick 1921) may also represent a slender A. praecox but in the absence of field-data, other than an uninformative pencil sketch, this cannot be confirmed; in such areas in Britain A. sphaleromorpha (Bull.: Fr.) Fayod might be expected. Vesiculose cheilocystidia could not be located although typical ampulliform pleurocystidia clearly approached the gill-edge; some basidiospores in any one mount were also rather large, e.g. 11-12 x 7-8 µm. Equally, filamentous cheilocystidia taken as characteristic of A. cf. puiggarii were not found; see below.

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Agaricus praecox Pers. (1800)
Agrocybe praecox (Pers.) Fayod 1889
Agrocybe praecox (Pers.) Fayod 1889
Agrocybe praecox (Pers.) Fayod 1889
Agrocybe praecox (Pers.) Fayod 1889
Agrocybe praecox (Pers.) Fayod (1889)
Agrocybe praecox (Pers.) Fayod 1889
Agrocybe praecox (Pers.) Fayod (1889)
Agrocybe praecox (Pers.) Fayod 1889
Agrocybe praecox (Pers.) Fayod (1889)
Agrocybe praecox (Pers.) Fayod 1889
Agrocybe praecox (Pers.) Fayod 1889
Agrocybe praecox (Pers.) Fayod (1889)
Agrocybe praecox (Pers.) Fayod 1889
Agrocybe praecox (Pers.) Fayod (1889)
Agrocybe praecox (Pers.) Fayod 1889
Agrocybe praecox (Pers.) Fayod (1889)
Agrocybe praecox (Pers.) Fayod 1889
Agrocybe praecox (Pers.) Fayod (1889)
Agrocybe praecox (Pers.) Fayod 1889
Agrocybe praecox (Pers.) Fayod 1889
Agrocybe praecox (Pers.) Fayod (1889)
Pholiota praecox (Pers.) P. Kumm. (1871)
Agrocybe praecox (Pers.) Fayod 1889

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Agrocybe praecox (Pers.) Fayod 1889
New Zealand
Auckland
Agrocybe praecox (Pers.) Fayod 1889
New Zealand
Bay of Plenty
Agrocybe praecox (Pers.) Fayod 1889
New Zealand
Gisborne
Agrocybe praecox (Pers.) Fayod 1889
New Zealand
Mid Canterbury
Agrocybe praecox (Pers.) Fayod 1889
New Zealand
Taranaki
Agrocybe praecox (Pers.) Fayod 1889
New Zealand
Taupo
Agrocybe praecox (Pers.) Fayod 1889
New Zealand
Waikato
Agrocybe praecox (Pers.) Fayod 1889
New Zealand
Wairarapa
Agrocybe praecox (Pers.) Fayod 1889
New Zealand
Wellington

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1cb17cd9-36b9-11d5-9548-00d0592d548c
scientific name
Names_Fungi
1 January 2000
19 December 2006
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