HYMENOGASTER. OCTAVIANIA 27 



18. H. olivaceus Vitt. (= Hymenogaster populetorum Berk, sec 



Massee.) Olivaceus, olive colour. 



Pe. 24: cm., whitish, becoming rufescent when touched, angularly 

 globose, silky. Gleba whitish, then buff, and finally rufous olive, cells 

 fairly large. Spores brown, rarely slightly rugulose, broadly fusiform, 

 mucronate, pedicellate, 25-30 x 13-14/i. Smell like that of Lactarius 

 theiogalus. Underground in woods. May Nov. Common in the West 

 of England. 



var. modestus B. & Br. Modestus, decent. 



Differs from the type in its somewhat cheesy smell and in the pale 



amber, narrowly fusiform, smooth spores, 25-26 x 8-10/x. Parks. Rare. 



19. H. tener Berk. (= Hymenogaster lilacinus Berk. sec. Massee.) 



Tul. Fung. Hypog. t. 1, fig. 4; t. 10, fig. 1. Tener, soft. 



Pe. 1-3 cm., white, at length dingy, globose, soft, silky, peridium 

 thin. Gleba white, then tinged with pink and finally greyish umber; 

 sterile base white, well developed. Spores ochraceous, verruculose, or 

 rugulose, broadly elliptical, apex papillate, 30 x 14-16/4. Smell like 

 that of Lactarius theiogalus. Underground in woods. Sept. Jan. 

 Not uncommon, (v.v.) 



20. H. Thwaitesii B. & Br. Tul. Fung. Hypog. t. 10, fig. 11. 



G. H. K. Thwaites. 



Pe. 1-1-5 cm., dirty white, here and there stained, globose, firm. 

 Gleba brown. Spores brown, rather rough, globose, apex minutely 

 papillate, 11-13/4. Underground. Rare. 



21. H. griseus Vitt. Vitt. Mon. Tub. t. 3, fig. 15. Griseus, grey. 

 Pe. 6-12 mm., pale brown, at first covered with whitish down, globose, 



or irregular. Gleba grey, becoming blackish, cells minute. Spores dark 

 umber brown, irregularly tuberculose, fusiform, 28-32 x 20/4. Smell 

 very pleasant, resembling that of Convallaria majalis. Amongst leaf 

 soil. Woods. Rare. 



22. H. pusfflus B. & Br. Pusillus, very small. 

 Pe. 3-4 mm., white, yellowish brown when dry, and then like Sclero- 



tium complanatum, obovate, or subdepressed, nearly smooth. Gleba 

 dirty white, cells large, sterile base large. Spores pallid rubiginous, at 

 length rough, broadly elliptic, apex papillate, 14-16 x 10/4; basidia 

 with two long sterigmata. Smell very slight. Mossy ground. Oct. 

 Rare. ^ 



Octaviania Vitt. 

 (Dr Vincent Ottaviani.) 



Peridium globose, oblong, or irregular, soft, fibrous. Gleba cells 

 arising from the peridium, empty at first, tramal plates splitting, 



