250 CALIFORNIA ACADEMY OF SCIENCES. [Proc. 3D Ser. 



Growing in vegetable humus, Wildwood Glen, Sausalito, 

 Marin County, Calif., December. 



18. Hymenogaster rufus Vitt. 



Hymenogaster rufus Vitt., Monog. Tub., p. 23, Tab. Ill, fig. 17. 



Subglobosus; peridio albo-rufescenti subsericeo; basi minuta; carne uni- 

 colore rubro-fusca; cellulis majusculis, irregularibus; sporis obovatis subses- 

 silibus rufis. (Tul. Fungi Hypo., p. 64.) 



No. 163, Harkness Coll. 



Under shrubby oaks. Mill Valley, Marin County, Calif., 

 April. 



19. Hymenogaster tener Berk. 



Hymenogaster tener Berk., Ann. & Mag. Nat. Hist., ist Ser., Vol. XIII, 

 P- 349- 

 Small, globose, soft, white, silky; substance pale pink, then greyish-umber; 

 sterile base conspicuous, white; spores broadly elliptic, with a papillary apex, 

 minutely warty. (Berk. Outlines Brit. Fung., p. 296.) 



No. II, Harkness Coll. 



Under oaks, Oakland, Alameda County, Calif. Date 

 not given. 



Hydnangium Wallr. 



Hydnangium Wallr., in Dietr. F1. des Kcenigr. Preuss., VII, 465. 



Peridium fleshy or membranaceous. Sterile base none. Trama vesicular. 

 Cells at first empty, then filled with spores. Spores echinate. (Berk. Out- 

 lines Brit. Fung., p. 293.) 



20. Hydnangium compactum, sp. nov. 



Globose, 5 cm. in diam. ; color white, smooth; gleba dense, pale orange; 

 cells minute, oblong or ellipsoidal; spores globose, rough, not echinate, 

 white, briefly stipitate, guttulate, 6 /z in diam. 



Type, No. 191, Harkness Coll. 



Under Ceanothus, Auburn, Placer County, Calif., May. 



