CLASSIFICATION OF AGARICS 

 151. Russula lutea Fr. (Edibi 

 Svsi. Myc, L821. 



Illustrations: Cooke, III.. PI. L082. 



Gillet, Champignons de Prance, No. 622. 

 Patouillard, Tab. A_nalyt., No. 321. 

 Bresadola, Fungh. mang. e. vel., PI. T'.». 

 Michael, Fiihrer f. Pilzfreunde, No. 61. 

 Ki.k. -ii, Blatterpilze, PI. L8, Fig. 3. 

 Plate XXII of this Report. 



PILEUS 3-6 cm. broad; small, thin, convex then piano-depressed, 

 pellicle easily separable, viscid, margin even, becoming slightly 

 striate in age, unicoloms, bright yellow <>r pale golden yellow. 

 FLESH white, very thin, fragile. GILLS at length deep yellow- 

 ochraceou8, subdistant, rather broad in front, narrowed behind and 

 free, equal, interspaces often venose. STEM white, unchanged, 

 snbeqnal, stuffed then hollow, soft, fragile, even or obscurely 

 wrinkled, glabrous, 3-5 cm. long, 4-8 mm. thick. SPORES globose, 

 echinnlate, yellow, s in micr. in diam. TASTE mild. ODOB none. 



Solitary, in coniferous and mixed woods of aortheni Michigan, 

 in frondose woods in the south. July and August. Infrequent and 

 few in number. 



Our plan! i-- the same ;is the one occurring aboul Stockholm. It 

 agrees with the characters as given in Bymenomycetes Europaei, 

 except that the gills are subdistant, not truly narrow bul relatively 

 bro;nl in front. The Stockholm specimens had the thin margins 

 of the pileus at length slightly striate, as is also the case with the 

 Michigan plants. Peck says he has found it bu1 oner in New York. 

 I have found it a number of times in Michigan. R. vitelline Fr. 

 which is s;iid to resemble this species, is not known to Romell for 

 Sweden, and lie refers all their forms to /.'. lutea. It may be that 

 /.'. lutea and /,'. vitellina represent extremes of the species. Our 

 plant described above and tli.it aboul Stockholm do nol agree with 

 either of the descriptions, but is ;i compromise between the '\\<'. 

 Our plants are not strongly striate Dor have they any marked odor 

 like /,'. vitellina; on the other hand they have broader and a 

 distant gills than is warranted by the description of /,'. int-n. \. 

 cording to Fries, /.'. lutea is found in beech forests and /•'. > 

 in coniferous woods. /.'. ftavia p% Pk. is -<^\>\ to be larger, with i 

 row and close, pale yellow gills. 



