78 ELEVENTH REPORT. 



Gregarious. Grassy places, lawns, groves and woods. Thruout the state. 

 July and August. 



Cooke's Illustrations of R. pectinata and R. consohrina var. sororia reminds 

 one very much of the plant. Peck points out that it differs from these by its 

 milder taste, adnate gills and grayish color under the cuticle. R. suhfoetene 

 Smith as known to Romell, also reminded me of this species. The color of 

 R. pectinatoides, the long striations and the medium size are the best recog- 

 nition marks in the field. It differs of course from R. foetens b}^ lack of a 

 strong odor. Whether the margin is at first incurved is nowhere noted. 



31. RUSSULA FOETENTULA Pk. 



(The small, ill-smelling Russula.) 



Not found with certainty in our region, altho reported. It is distinguished 

 from R. foetens by its closer gills and the colors given in the key. The odor 

 is amygdaline. Spores very pale yellow. The character of the young margin 

 is not given. 



32. Russula foetens (Pers.) Fr. 

 (The ill-smelling Russula.) 



Illustrations: Hard's Mushrooms, 1908. P. 185, fig. 147. 



PiLEUS 7-12 cm. broad, fleshy, hard then fragile, subglohose then expanded 

 and depressed, viscid when moist, thin margin at first incurved, tuhercular- 

 sulcate when expanded, yellowish or dingy ochraceous, pelhcle adnate. Flesh 

 thin, rigid but fragile, dingy white. Gills white, at first exuding drops of 

 w^ater, sordid when old or bruised, rather close, adnexed, few forked, inter- 

 spaces venose, shorter ones present. Stem 4-6 cm. long, 1-2.5 cm. thick, 

 whitish, short, stout, stuffed then cavernous. Spores white in mass, sub- 

 globose, 7.5-10 micr. Taste acrid. Odor strongly amygdaline, becoming 

 foetid. 



Gregarious. In mixed woods in the north; in oak, maple, etc., in southern 

 Michigan. July, August and September. 



The odor of the fresh young plant is like oil of bitter almonds or cherry 

 bark; when old or decaying it becomes quite disagreeable. The margin of 

 the young pileus is strongly incurved. Not edible. 



FRAGILES. (RUSSULINA. Schroet. In sense of Earle.). 



Pileus thin, fragile, the viscid pellicle continuous and quite separable, 

 margin connivent, not incurved when young, usually strongly striate. The 

 gills are of equal length, broader anteriorly, narrowed behind. 



A. TASTE ACRID. 



33. Russula emetica Fr. 



(The emetic Russula.) 



Illustrations: Atkinson's Mushrooms. 1900. PI. 36, p. 126, fig. 4. 

 Mcllvaine's American Fungi, 1900. PI. 44, p. 184, fig. 2. Hard's 

 Mushrooms, 1908. P. 193, fig. 153. Marshall's The Mushroom Book, 

 1902. PI. opp. p. 68. 



