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Hispidula tokerau P.R. Johnst. 2003

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Hispidula tokerau P.R. Johnst., New Zealand J. Bot. 41 695 (2003)
Hispidula tokerau P.R. Johnst. 2003

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Endemic
Present
New Zealand
Political Region

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P.R. Johnst.
P.R. Johnst.
2003
695
ICN
Hispidula tokerau P.R. Johnst. 2003
NZ holotype
species
Hispidula tokerau

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tokerau

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Hispidula tokerau P.R. Johnst. 2003

ADDITIONAL SPECIMENS EXAMINED: NEW ZEALAND:AUCKLAND: Waitakere Ranges, Cascades, Upper Kauri Track, on fallen leaves Dracophyllum latifolium, P. R. Johnston D420, 11 Oct 1989, PDD 56335. COROMANDEL: Little Barrier Island, on fallen leaves D. patens, P. R.Johnston LB88, 13 Jun 1984, PDD 55317.NORTHLAND: Puketi Forest, Waiohanga Gorge Tr., on fallen leaves D. latifolium, P. R. Johnston D174 & E. H. C. McKenzie, 23 Oct 1987, PDD 53846.
DESCRIPTION: Apothecia developing on lower surface of fallen leaves, typically near base of leaf, associated with bleaching of the leaf tissue. Apothecia erumpent from beneath epidermis, arising from small patch of compact, hyaline tissue comprising tangled 2-3-µm-diam. hyphae with thin, hyaline walls, embedded in hyaline gelatinous matrix. Apothecia 0.5-0.8 mm diam., sessile, disc pale yellowish,receptacle pale yellowish to dark brown, with a row of massive, tapering, pale, whitish appendages up to 0.8 mm long. Ectal excipulum two-layered; outer layer 50 µm thick, of textura angularis with elements oriented at high angle to receptacle surface, comprising angular, 7.5-12.5-µm-diam. cells with walls slightly thickened, hyaline, slightly gelatinous,outermost cells encrusted with bright yellow-brown material (this dissolving in lactic acid); inner layer up to 20 µm thick near margin of disc, 5-10 µm at sides of receptacle, comprising long cylindric, 3-µm diam.cells with walls thick, hyaline, gelatinous. Medullary excipulum poorly developed, barely differentiated from the basal tissue within the host leaf. Excipular hairs arising from outer layer of ectal excipulum; up to 800 x 3 µm, cylindric with rounded apex, walls thick, smooth, hyaline, dextrinoid in Melzer's reagent (under interference contrast microscopy with amyloid appearance at some angles), numerous hairs aggregated into tight groups, forming triangular, tapering appendages, 40 µm wide at base. Subhymenium comprising tangled 2-3-µm-diam. hyphae with walls hyaline, thin, nongelatinous. Paraphyses 1.5 µm diam., apex slightly swollen to 2.5-3 µm diam., sometimes branched in the upper 50 µm, extending 5-10 µm beyond asci, embedded in common gelatinous matrix. Asci 80-105 x 6.5-7.5 µm, cylindric to subclavate, apex more or less broadly rounded, wall slightly thickened at apex, apical pore nonamyloid, 8-spored, spores overlapping uniseriate, spores extending 65-70 µm from ascus apex. Ascospores 10.5-14 x 3.5-4.5 µm, elliptic to fusoid, ends more or less acute, slightly flattened one side, not curved, 0-1-septate, wall hyaline (becoming pale brown after ascospores released).
DIAGNOSIS: Species characteribus Hispidulae. Apothecia 0.5-0.8 mm diam.; discus flavida; receptaculum falvidum vel atrobrunneum; appendices albidae, Melzero aurantiaco, ad 0.8 mm longae. Asci 80-105 x 6.5-7.5 µm, poro Melzero noncaerulescente; ascosporae 10.5-14 x 3.5-4.5 µm, ellipticae vel fusiformes, extrema plus minusve accuminata, versus facie unam complanatam, 0-1-septatae. In foliis caducis Dracophylii.

ETYMOLOGY: The specific epithet refers to the Maori word for the northern part of New Zealand, tokerau, reflecting the northern distribution of this species (epithet in the form of a noun in aposition).

NOTES: H. tokerau is macroscopically very similar to H. pounamu. This second species is distinguished macroscopically by its brighter hymenium when fresh, its larger asci and ascospores, and by its ascus wall being thicker at the apex, and the apical pore being amyloid. H. tokerau is known only from the northern part of the North Island of New Zealand.

HOLOTYPUS (here designated): New Zealand: Coromandel: Little Barrier Island, Summit Tr., on Dracophyllum patens fallen leaves, P. R. Johnston D293, 7 Apr 1988, PDD 54811.

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Hispidula tokerau P.R. Johnst. 2003
Hispidula tokerau P.R. Johnst. (2003)
Hispidula tokerau P.R. Johnst. 2003
Hispidula tokerau P.R. Johnst. (2003)

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Hispidula tokerau P.R. Johnst. 2003
New Zealand
Coromandel
Hispidula tokerau P.R. Johnst. 2003
New Zealand
Gisborne

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9073ba49-ba01-4c3d-8a9c-51d414ba68b2
scientific name
Names_Fungi
16 December 2003
16 December 2003
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