Hymenogaster and related genera.pdf - MykoWeb

672 ANNALS OF THE MISSOURI BOTANICAL GARDEN
(VOL. 21
of loosely woven hyphae; basidia long and slender, 2-, rarely
3-,spored, much longer than the paraphyses, brown; paraphyses
broad; spores 24-36 x 10-16 jm, with a short, blunt apiculus,
long-appendiculate, exospore very thin, covered with small
flakes.
In the humus layer under Quercus and Fagus, along with
Hysterangium calcareum. Central Europe and Oregon. April
to October.
U. S. S. R. [RUSSIA]: Moskva, Mikhailovskoe, and road to Sekirino, F. Bucholtz,
Aug. 25, 1907 (sub H. vulgairiU a and H. tener a, Farlow); Ukraine [near Khar-
kov], B. M. Czernaiev (sub H. vulgaris, det. Berkeley, Upsala).
GERMANY: Kirehditmold, B. Hesse, V, 1889, type, and IV, 1890; Stadtwald, B.
Hesse, VIII, 1890 (both Hesse); Bad Vorisshofen, E. Soehner 488 (Soehner).
WALES: Nant y Glyn, C. B. Broolne, Oct., 1880 (Brit. Mus.).
OREGoN: Benton County, Corvallis, S. M. Zeller 2485 (Zeller).
44. HYMENOGASTER HEssEI Soehner, Zeitschr. f. Pilzk. 2: 158.
1923.
Hymenogaster vulgaris Hesse, Hypog. Deutschl. 1: 114-115.
1891-not H. vulgaris Tulasne,
Illustrations: Hesse, Hypog. Deutschl. 1: pl. 2, f. 14-15; pt.
7, f. 30.
Type: in Bot. Inst. Univ. Marburg.
Fructifications the size of a hazel-nut, irregular, base re-
maining sterile for a long time, white to dirty gray; peridium
shining, papery, drying 18-26 / thick, not separable, composed
of pseudoparenchyma in the middle and a fibrous layer next the
gleba; gleba white, becoming brown to blackish, cavities irreg-
ular; septa 18-20 a thick, composed of loosely woven hyphae;
basidia of medium size, cylindric, surpassing the paraphyses in
length, 2-spored; spores broad obovoid-citriform with a very
roughly wrinkled utricle, golden-yellow when young, then
darker, 16-22 x 10-15 a, appendiculus 1.5 m long and 2.5 mu broad,
like a pair of claws, apiculus short, blunt.
Under Quercus and Fagus. Hessen-Nassau, Germany.
August to October.
The young spores of H. verrucosa Bucholtz are of the same
magnitude and shape as mature spores of H. Hessei, and might
be mistaken for the latter. However, the spores of H. verru-