BOT.-VOL. I.] HARKNESS-CALIFORNIAN HYPOG^I. 255 



In vegetable humus under Arctostaphylos, Auburn, Placer 

 County, Calif., February. 



33. Hysterangium Phillipsii, sp. nov. 



Plate XLII, Figs, \a-\b. 



Large, 3-4 cm. in diam., color rose-pink, fibrinous; rootlets 12 cm. or more 

 in length; gleba of a dark olive or greenish (verdatre) tint, profusely veined, 

 coalescing at the base; cells minute, spores ellipsoidal, in groups of three or 

 four, white, 2 x 5/x. 



Type, No. 234, Harkness Coll. 



Under oaks, Wire Bridge, Placer County, Calif., Janu- 

 ary. Collected by Chas. L. Phillips. 



34. Hysterangium occidentale sp. nov. 



Large, 4 cm. in diam., color dirty white; peridium soluble, subrotund, 

 somewhat flattened or discoid; gleba chocolate-colored; cells gyrose, large; 

 spores ellipsoidal, white, 12 x 7//. 



Type, No. 242, Harkness Coll. 



Amongst Sequoias, Tamalpais, Marin County, Calif., 

 May. 



35. Hysterangium nephriticum Berk. 



Hysterangium nephriticum Berk., Ann. & Mag. Nat. Hist., ist Ser., Vol. 

 Xni, 1844, p. 350; TuL., Fungi Hypo., p. 82. 



Depressed, springing from a white, flat, branched, membranous mycelium; 

 peridium firm, elastic, distinct, tomentose; substance pale blue or grey, here 

 and there greenish; cavities radiating from the base; spores minute, oblong, 

 pale clay-color. (Berk. Outlines Brit. Fung., p. 294.) 



No. 143, Harkness Coll. 



Under oaks. Auburn, Placer County, Calif., March; 

 Mill Valley, Marin County, Calif., April; Calistoga, Napa 

 County, Calif., May. 



36. Hysterangium membranaceum Vitt. 



Hysterangium membranaceum Vitt., Monog. Tub., p. 14, Tab. IV, fig. 15. 



Minus, rotundatum, radicatum; peridio tenui membranaceo albido sub- 

 tomentoso; came viridiuscula; cellulis diffbrmibus et irregularissimis. (Tul. 

 Fungi Hypo., p. 83.) 



No. 176, Harkness Coll. 



