Hymenogaster and related genera.pdf - MykoWeb

656 ANNALS OF THE MISSOURI BOTANICAL GARDEN
[VOL. 21
FmANCE: L. Quelet (Upsala); Barezian, N. Patouillard, Oct., 1913, (Farlow);
Lepinay, N. Patouitlard, Aug., 1912, Aug., 1913 (Farlow); Doubs, H6rimoncourt,
L. Que'let (sub H. nAiveu, Upsala); Belfort, Delle, L. Que'let (sub H. 1yooperdineuss,
Upsala); Jura, Joye de Buron, N. Patouiidard, Oct., 1906 (Farlow).
25. HYMENOGASTER reticulatus Zeller & Dodge, sp. nov.
Fructificationes subsphericae, ad 1 cm. diametro metientes, unibonatae, pallidae
vel flavo-brunneae, superficie laevi spongiosa; peridium 70-120 , crassitudine sic-
catum, hyphis tenuissimis, laxe implicatis, stuposis; gleba sordide brunneo-albida,
"cinnamon-buff" vel "tawny-olive" siccata, fragilis, locellis parvis, irregularibus;
septa scissilia, 25-30 A crassitudine, hyphis laxe implicatis; basidia anguste clavata,
bispora, sterigmatibus tenuibus, brevibus; sporae obscure brunneae, late citri-
formes, apiculo prominente, laevi, episporio reticulate foveolato, 14.5-16 (-18.5) x
9.6-11 (-11.5) y.
Type: in Cleland, Dodge, and Zeller Herbaria.
Fructifications subspherical, about 1 cm. ih diameter, with a
small umbo, pallid with yellowish-brown tints, drying cinnamon-buff
to tawny-olive, surface smooth but spongy; peridium
about 70-120 /L thick (dry), of very slender loosely woven stupose
hyphae, hyaline to citrine; gleba dirty brownish-white,
drying cinnamon to tawny-olive, fragile, cavities irregular,
relatively small; septa hyaline, scissile, 25-30 ,u thick, of rather
loosely interwoven hyphae; basidia 2-spored, slender, clavate,
sterigmata slender, short; spores dark brown, broadly citriform
with a prominent smooth apiculus, 14.5-16 (-18.5) x
9.6-11 (-11.5) /u, exospore reticulate-pitted, pits averaging 2 Z
broad.
Hypogeous. South Australia. April.
The spores of this species are evenly and beautifully reticulate-pitted,
the markings strikingly distinct from those of other
species.
In the type collection the surface of the peridium is overgrown
by a mycelium of yellowish, clear hyphae about 4 /A in
diameter, having clamp connections and clavate tips about
7-8 /A broad. It could not be determined whether this mycelium
is organically connected with H. reticulat us.
AusnALIA: South Australia National Park, J. B. Cleland 6, Apr. 29, 1924, type
(Dodge and Zeller).
26. HYMENOGASTER
atratus (Rodway) Zeller & Dodge, comb.
nov.