120 Mycologia 



Gomphidius subroseus sp. nov. (Plate 13). 



Pileus 3-6 (7) cm. broad, convex-expanded then plane, very 

 obtuse to broadly depressed, with a viscid separable pellicle, 

 glutinous only in rainy weather, varying "salmon-color" to 

 "vinaceous-pink" (Ridg.), disk "ochre-red" to "testaceous," 

 usually fading, becoming slightly blackish on drying, glabrous, 

 even or slightly wrinkled when dry; flesh thick on disk, abruptly 

 thin on margin, white or tinged vinaceous. Gills decurrent, 

 close to subdistant, attenuate at ends, 6-7 (8) mm. broad at 

 middle, soon "pale ; moke-gray" to "pale mouse-gray," finally 

 darker and variegated, some forked near margin or towards 

 stem, thickish, edge entire. Stem 3-6 cm. long, 6-12 (15) mm. 

 thick, tapering downwards or subequal, straight or curved, solid, 

 base or lower half "lemon-yellow," "empire-yellow" or "citron- 

 yellow" (Ridg.), apex or upper portion white and silky, covered 

 when fresh up to near the apex by the hyaline, viscid, thin, 

 appressed sheath of the universal veil, at length glabrous and dry, 

 rarely becoming sordid or blackish in age. Spores 14-17 (20) x 5- 

 6 11, subfusiform-ellipsoid, obtuse at ends, smooth, dark sooty. 

 Cystidia rather abundant, cylindrical above the slender pedicel, 

 hyaline (in fresh plants), 100-140 x 8-15 /x, apex rounded. Odor 

 and taste none. 



Type on humus and moss under conifers, near Welch's Post 

 Ofilice, Oregon National Forest, Mt. Hood, Oregon. September 

 22, 1922. Frequent in this region. Also under pines, Tolland, 

 Colorado, September 14, 1920; and near Copeland, Idaho, 

 September 2, 1922. Collected by C. H. Kauffman. Deposited 

 in the herbarium of the University of Michigan. 



This species differs from G. roseus (Fr.) Quel, by the distinct 

 yellow base of the stem, by the less rosy-red color of the pileus 

 attributed to the European plant, and perhaps by the cystidia. 

 We apparently have no account of the cystidia of G. roseus. 

 Ricken, to be sure, gives cystidia for the plant he places under 

 that name, but Ricken's description departs from the conception 

 of other mycologists, and his plant may be the species here 

 described, or perhaps it is G. gracilis. Rea (12) unaccountably 

 copies Ricken's remarks on the cystidia, but Rea's description 

 otherwise applies to the plant with a rosy stem-base, and is there- 

 fore to be considered the correct traditional conception of G. roseus. 

 G. gracilis Berk., although it has a yellow stem-base, is de- 

 scribed by Berkeley as having a conic-hemispherical pileus and 



