New Zealand Fungarium - Te Kohinga Hekaheka o Aotearoa

PDD 46656

Holotype

Packet

11 April 2011

24 February 2023

Clavaria ardosiaca R.H.Petersen

R.H. Petersen

Clavaria ardosiaca R.H. Petersen

Basidiomycota

Agaricomycetes

Agaricales

Clavariaceae

Determination

Unknown

Waipoua Reserve, Kauri Tree Track

Latitude and Longitude (WGS84):  -35.6084  173.531 

Waipoua Reserve, Kauri Tree Track

R.H. Petersen, A.P. Hawthorne

R. H. Petersen; A. P. Hawthorne

RHP 42264

1981/06/22

1981-06-22

New Zealand

Northland

Ngāpuhi

Ngāti Whātua

Te Roroa

New Zealand Map Grid:  2558820E 6621350N  (WGS84 -35.608406 173.531147)

RHP Field No. 775 = TENN 42264
W.M. Daley, 2012

[RHP] Fruitbodies up to 12 x 0.5 cm, simple clubs, scattered, gregarious or cespitose in groups of up to 30 individuals, narrowly fusiform to subcylindrical, arising from discrete or common whitish mycelial patches. Club slate-grey to deep slate-grey ("Quakerdrab","deep purplish grey", "purplish grey", "neutral grey", "deep neutral grey"), opaque, with mat texture, often longitudinally wrinkled or dimpled, equal; flesh concolourous outward, inward whitish and stuffed; apex rounded. Stipe equal, hardly distinct from hymenium, deep grey-brown ("benzo-brown" upward, "drab" downward). Taste faintly sweet; odour none, or tardily and weakly of garlic. On soil and humus under kauri (Agathis australis). Macrochemical reaction: FCL = negative. Tramal hyphae significantly inflated, adherent, thin-walled, clampless, hyaline; secondary septa rare; gloeoplerous hyphae occasional, uninflated, refringent under phase contrast. Subhymenium well developed, pseudoparenchymatous. Hymenium thickening, adherent; basidia clavate, clamped, contents granular when young, multiguttulate when mature; sterigmata 4, stout curved, somewhat divergent. Spores 8.3-11.2 x 6.8-8.3 urn (E = 1.19-1.50; Em = 1.32; LM = 9.83 jo.m), broadly ellipsoid, flattened slightly adaxially, smooth, thin-walled; contents uniguttulate when mature; hilar appendix thick, prominent, papillate.COMMENTARY: This is a slate-grey version of Clavaria albo-globospora, with which it was growing. Fruit bodies are striking when once seen but the dark colour obscures them in the field. [JAC] Collections 1) North Island: Waipoua at base of Big Kauri Tree, 23.vi.81, coll. RHP & Ann Hawthorne, no. 42264 (holotype, PDD46656; isotype, TENN); 2) Waipoua, across river from Forestry Headquarters, 23.vi.81, coll. GS, no. 42419 (TENN). No subsequent collections. The grey holocorynes are C. ardosiaca, musculospinosa, muscula (no PDD colls) and plumbeo-argillacea. Given that appearance of spines and color is variable other characters must be emphasised and spore size variability investigated. No trama clamps. Spores length=10.8-13.9µm (µ=12.1, σ=0.94), width=7.0-9.5µm (µ=8.2, σ=0.71), Q=1.3-1.7µm (µ=1.49, σ=0.13), n=20, very variable. Some spores have sub-hilar protrusions and other spines. As usual the basidial basal looped clamps are hard to discern. The spiny spores suggest this needs critical comparison with C. musculo-spinosa. C. ardosiacac to 12cm long, C. musculospinosa to 6cm (and much smaller frbs in packet).
J.A. Cooper, Nov. 2017