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Terriera brevis (Berk.) P.R. Johnst. 2001

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Terriera brevis (Berk.) P.R. Johnst. 2001
Terriera brevis (Berk.) P.R. Johnst. 2001

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Endemic
Present
New Zealand
Political Region

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(Berk.) P.R. Johnst.
Berk.
P.R. Johnst.
2001
98
as 'breve'
ICN
NZ holotype
species
Terriera brevis

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brevis

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Campbell's Island
on the dead leaves of Uncinia Hookeri, Boott.

Peritheciis brevibus ellipticis nigris prominulis, rima angustissima, ascis linearibus elongatis.

Perithecia minuta, nigra, nitida, prominula, breviter elliptica, raro utrinque apiculata, rima angustissima. Asci elongati, lineares, paraphysibus filiformibus rectiusculis immixti, sporidiis filiformibus.

This species is manifestly different from the small form of H. culmigenum, and the nature of the asci and paraphyses are further distinct, being in the latter plant shorter and of a different form, with the apices of the paraphyses curved or curled. The apiculate extremities may not prove to be a constant character, though the probability is that it will, at least in full grown specimens.

L. hypophyllum; pyreniis minimis punctiformibus, sparsis, nervisequiis, innato-protuberantibus, late ellipticis, utrinque rotundatis, atris, opacis, rigidulis, sub lente subtiliter, ex epidermide, striolatis, rima angusta subflexuosa hiantibus, subinde depressis, canaliculatisve ; ascis paraphysibus paullo longioribus, sporidiis plerumque rectiusculis.

Hysterium breve: peritheciis brevibus, ellipticis, nigris, prominulis, rima angustissima, ascis linearibus elongatis. Berkel. fung. in Cryptog. antart. 3. p. 62. tab. 68. fig. 8. bona.

Holotype of L. breve (on Uncinia hookeri, Campbell I. - K), PDD 46121, 37127 (IMI), 47493.
Ascocarps on Uncinia 0.6-1.2 x 0.2-0.3 mm, oblong-elliptic in outline with broadly rounded ends, on Gahnia ascocarps 1.0-5.0 x 0.2-0.4 mm, often sublinear. Walls black with paler zone along the future line of opening. Walls of mature ascocarps oriented steeply with respect to surrounding host tissue, with black, flattened area adjacent to both sides of longitudinal opening slit. Pycnidia absent.

Ascocarps in vertical section initially subepidermal, epidermal cells becoming filled with fungal tissue as ascocarps mature. Hymenium surrounded by layer of vertically-oriented, thin-walled, hyaline, cylindric cells. Upper wall 20-25 µm wide, of dark brown, thick-walled cells, with a narrow extension, comprising very dark tissue, extending across top of hymenium.

Paraphyses 1-2 µm diam., undifferentiated or slightly swollen at apex, extending 10-15 µm beyond asci. Asci 110-130 x 6-7 µm, cylindric, apex rounded, wall not thickened, 8-spored. Ascospores 60-70 x 1.5-2 µm, 0-septate, with indistinct gelatinous sheath.

Auckland, Coromandel, Campbell I.
Dead leaves of Uncinia spp. and Gahnia sp.

The type specimen of this species (K) is fragmentary. Vertical sections were made from part of one ascocarp from the type. Ascocarp structure was typical of L. multimatricum. Asci, ascospores, and paraphyses were not clearly seen. Berkeley (in Hooker 1847) provided illustrations, but no measurements of the hymenial elements.

Two recent collections from New Zealand, one on Uncinia (PDD 46121), and one on Gahnia (PDD 37127) have the same kind of ascocarp structure as the type of L. breve. The asci and paraphyses from these collections match the illustrations of Berkeley, and as L. breve was originally described from an Uncinia sp., it is assumed that the recent collections represent L. breve. The following description is based on the recent New Zealand collections.

L. breve was placed in synonymy with L. gramineum by Tehon (1935), however the two fungi differ in ascocarp structure and in ascus width.

See also notes under L. multimatricum.

Terriera brevis (Berk.) P.R. Johnst. 2001

Additional specimens examined: New Zealand: AUCKLAND: Marguerite Track, on Gahnia, 15 Oct. 1975, G.J. Samuels s. num. (PDD 47493); Waitakere Ranges, Karamatura Stream, on Gahnia, 3 Sep. 1976, G.J. & C. Samuels. s. num.. (PDD 37127); COROMANDEL: Little Barrier 1, Shag Track, on Uncinia, 15 Jun. 1984, P.R. Johnston LB29 (PDD 46121); Port Charles, between wharf and Big Sandy Bay, on Carex, 29 Dec. 1993, P.R. Johnston s. num. (PDD 62551).
Infected areas on dead leaves, no paler than surrounding leaf tissue, not associated with zone lines, containing scattered ascomata, conidiomata not seen. Ascomata on Uncinia 0.6-1-2 x 0.2-0.3 mm, oblong-elliptical in outline, ends rounded, on Gahnia 1-5 x 0.2-0.4 mm, often sublinear, in unopened ascomata wall black with paler zone along future line of opening, in opened ascomata wall black, oriented at high angle to surrounding host tissue, single, longitudinal opening slit with narrow, black, shelf-like zone along either side. Ascomatal insertion subepidermal. Ascomatal structure typical of Terriera (see p. 37). Paraphyses 1-2 µm diam., undifferentiated to slightly swollen at apex, unbranched, embedded in thick gel, extending as compact epithecium 10-15 µm beyond asci. Asci 110-135 (-160) x 6-7 µm, cylindrical, tapering gradually to rounded apex with slightly thickened wall, 8-spored, narrow basal stalk with spores extending 80-90 µm from ascus apex. Ascospores (55-) 60-75 x 1.5-2 µm, tapering slightly to ends, non- or 1-septate, gently curved or sigmoid on release, with no gelatinous sheath.
New Zealand.
Carex, Uncinia, Gahnia (Cyperaceae).

Terriera breve is distinguished from the other monocotyledon-inhabiting New Zealand species of Terriera by its undifferentiated paraphyses and ascus and ascospore size.

Asci from a collection on Gahnia (PDD 37127) are slightly longer (130-160 µm, vs 110-135 µm) than the other collections examined. However, in all other respects the fungi could not be distinguished.

DE NOTARIS (I847) reported what he considered to be this species from Italy. DUBY (1862) placed it in synonymy with Lophodermium arundinaceum var. gramineum (Fr.) Duby, and this was accepted by TEHON (1935). However, this synonymy is incorrect, the ascomatal structure of T. breve differing from that found in all European monocotyledon-inhabiting species of Lophodermium.

New Zealand: Campbell 1, on Uncinia hookeri, s. dat., coll. nec num. (K!, holotype).
[Notes from Kew Type specimen, PRJ 2010] No obvious Lophodermium ascomata left

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Terriera brevis (Berk.) P.R. Johnst. 2001
Terriera brevis (Berk.) P.R. Johnst. (2001)
Terriera brevis (Berk.) P.R. Johnst. 2001
Terriera brevis (Berk.) P.R. Johnst. (2001)

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1cb1d2eb-36b9-11d5-9548-00d0592d548c
scientific name
Names_Fungi
1 January 2001
15 December 2003
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