Kauffman: The Genus Gomphidius 119 



11. Stem not sheathed, at length becoming black-stained or blackish when 



dried; veil lacking or obsolete; pileus brownish-incarnate, at length 

 black-stained; spores 15—23 x 6-7.5 ^t G. maculatus. 



12. Gills distinctly forked; stem attenuate downwards or pointed at base. . 13 



12. Gills not forked, close; pileus dark red; stem vinaceous-reddish, not 



pointed at base; spores 17-22 x 5.5-6.5 m- (Type) G. vinicolor. 



13. Spores 15-17 x 4-5 /x (Rea); pileus rose-colored; stem whitish, tinged rosy 



at base; gills whitish-cinereous, finally olivaceous G. roseus. 



13. Spores 16-21 (24) x 5-6.5 (7) ju; pileus at first whitish, then "testaceous" 

 (R.); stem white, becoming pinkish; gills whitish, becoming testaceous, 

 at length variegated with sooty-brown G. furcatus. 



UNDESCRIBED AND EMENDED SPECIES 



Gomphidius ochraceus sp. nov. 



Pileus 3-6 cm. broad, convex-expanded then plane, glabrous, 

 glutinous," ochraceous-salmon'' to "apricot-orange" (Ridg.) when 

 fresh, soon clouded with "olive-brown" and gradually becoming 

 tinged with vinaceous shades, even or soon rugose-wrinkled from 

 the drying gluten, margin at first incurved, at length spreading; 

 flesh thick, abruptly thin on margin, whitish to "pinkish-buff." 

 Gills decurrent, subdistant to distant, rather broad, 7-8 mm., 

 "tawny" (Ridg.), thick, edge entire. Stem 8-10 cm. long, 

 tapering downwards, 6-10 mm. thick at apex, variously curved, 

 subviscid, solid, "orange-buff" to "zinc-orange" (Ridg.), more 

 or less floccose upwards to an obsolete annulus, concolorous 

 within. Spores ellipsoid-fusiform, 15-19 (22) x 6-7 (8) ix, smooth, 

 pale smoky. Cystidia abundant, cylindrical, hyaline, rounded- 

 obtuse at apex, 150-180 x 12-15 /j.. Odor none. Taste mild. 

 Closely gregarious. 



On deep moss under conifers, near Welch's Post Office, Oregon 

 National Forest, Mt. Hood, Oregon. September 29, 1922. Col- 

 lected by C. H. Kauffman. Type In the herbarium of the 

 University of Michigan. 



This species has such a superficial similarity to G. tomentosus 

 Murrill that It Is easily passed by as that species. It differs 

 definitely, however, in its glabrous and glutinous pileus, and in its 

 somewhat broader and more distant gills. G. tomentosus, which 

 was abundant In this region, and was carefully studied, does not 

 have what I should call "distant" gills as given in Murrill's 

 description; rather the gills are close to subdistant. The color 

 is not very sharply different, but a difference does show whenever 

 the fresh plants are compared. The subviscid stem Indicates a 

 thin and evanescent universal veil. 



