Hymenogaster and related genera.pdf - MykoWeb

650 ANNALS OF THE MISSOURI BOTANICAL GARDEN
[VOL. 2 1
chymatica, 10-20 / crassitudine siceata; basidia anguste clavata, 2-4-spora; sporae
nigro-brunneae, late ellipsoideae, subfusiformes, episporio laevi, crasso, utriculoque
obseuro, aspero, lacerate, rugis longitudinalibus in sporis immaturis, pedicellato,
18.5-26 x 11.5-14 A.
Type: in Univ. Cal., Dodge, and Zeller Herbaria.
Fructifications 1-1.5 cm. in diameter, irregular in shape,
checking and cracking, very firm and compact, at first dirty
white, becoming brown, drying buff-brown, surface smooth to
flocculent; peridium of tough, hyaline, homogeneous prosen-
chyma, with flocci of hyphae on the surface, drying 80-150 IA
thick; gleba brown, firm, watery, cavities relatively small;
septa of hyaline prosenchyma, drying 10-20 ,p thick; basidia
narrowly clavate, 2- and 4-spored; spores very dark brown,
broad-ellipsoid, tapering to both ends, epispore smooth, thick,
but with a very dark, rough, torn utricle with more or less longi-
tudinal folds as shown by immature spores, pedicellate, 18.5-26
x 11.5-14 P.
In clay soil under Quercus and Salix. California. March.
The type of this species, although near to H. citrinus and H.
olivaceus (H. decorus), is very distinct in the young spores,
which approach the characters of H. lycoperdineus. Gard-
ner's No. 279 is referred here with some doubt, since the ma-
ture spores are quite similar to those in the type of H.
Thwaitesii'.
CIFoRNIA: Alameda County, Berkeley, N. L. Gardner 89 type, 279 (Univ. Cal.,
Dodge, and Zeller); San Mateo County, Palo Alto, James MoMurphy 290 (Stanford
and Zeller).
17. HYMENOGASTER MUTICUS Berkeley & Broome, Ann. & Mag.
Nat. Hist. II. 2: 267. 1848; Tulasne, Fung. Hypog. 65. 1851;
Cooke, Handbook Brit. Fung. 1: 360. 1871; DeToni in Sacc.
Syll. Fung. 7: 172. 1888; Massee, Ann. Bot. 4:42-43. 1889
[often cited as Monogr. Brit. Gast. 4243. 1889]; Hesse,
Hypog. Deutsehl. 1: 118-119. 1891.
Illustrations: Massee, Ann. Bot. 4: pl. 1, f. 20; Tulasne,
Fung. Hypog. pl. 10, f. 7.
Type: in Berkeley Herb. 4459, in Hooker, and in Cooke at
Kew, Fries Herb. at Upsala, and fragment in Lloyd Mus.