Part 1, 1914] 



AGARICACEAK 



3 



Doubtful Species 



Agaricus {Clitocybe) glaucipes Berk. & Curt. Ann. Mag. Nat. Hist, III. 4: 2. 1859. 

 Described from Connecticut. The lamellae are described as white, but were probably dusted 

 with spores. 



Agaricus ohiensis Mont. Syll. Crypt. 100. 1856. Collected by Sullivant near Columbus, 

 Ohio. The lamellae are described as long-decurrent, but this may possibly refer to their 

 decurrent teeth. 



Clitocybe rubrotincta Berk. & Curt. Jour. Linn. Soc. 10: 284. 1868. Collected by Wright 

 in Cuba. The lamellae are described as decurrent and also thinner than in Laccaria laccata. 



43. MELANOLEUCA Pat. Tax. Hym£n. 159. 1900. 



Trickoloma Quel. Champ. Jura Vosg. 38. 1872. Not Trickoloma Benth. 1820. 

 Melaleuca Pat. Hymen. Eur. 96. 1887. Not Melaleuca L. 1767. 

 Glutinaster Earle, Bull. N. Y. Bot. Gard. 5: 433. 1909. 



Fleshy, putrescent, solitary or gregarious, rarely cespitose; surface dry or viscid, glabrous 

 or inconspicuously decorated with fibrils or scales; context usually thick; lamellae sinuate or 

 adnexed, rarely varying to adnate; spores hyaline, usually ellipsoid and smooth; stipe central, 

 fleshy, usually stout; veil none or inconspicuous. 



Type species, Trickoloma melaleucum (Pers.) Quel. 



Species occurring in temperate North America, except those confined to the Pacific coast. I. 



Species occurring on the Pacific coast. ^ II. 



Species occurring in tropical North America. III. 



I, Species occurring in temperate North America, except those confined 



TO THE PACIFTC COAST 



Surface dry or only slightly viscid, glabrous or indistinctly decorated with 

 fibrils or scales. 

 Surface of pileus mostly white or pallid. 



Sporophore with long, slender stipe and thin pileus, resembling 

 Collybia; occurring mostly among grass in the open. 

 Pileus white, sometimes tinged with yellowish, 5-7.5 cm. broad. 1. 

 Pileus white, at times brownish on the umbo, 8-14 cm. broad. 2. 

 Pileus pale-cinereous or grayish-brown, 4-6.5 cm. broad. 3. 



Pileus fawn-colored to fuliginous, 3-6 cm. broad. 4. 



Sporophore not as above; stipe and pileus more normal for the 



M. alboflavida. 

 M. grammopodta, 

 M. subcinerea, 

 M. Melaleuca. 



genus. 

 Lamellae white, unchanging. 



Pileus acutely umbonate. 



Pileus obtuse or obtusely umbonate. 



Surface of pileus uniformly white or nearly so. 



Sporophores solitary to cespitose, but not united as 



below. 

 Taste acrid or bitter. 



Pileus whitish or pale-gray, innately fibrillose; 



stipe 2.5-5 cm. long. 



white, glabrous, sometimes yellowish 



and slightly pruinose on the disk; stipe 

 5-10 cm. long. 

 Taste neither acrid nor bitter. 



Pileus white tinged with yellow, changing to 

 sulfur-yellow when bruised ; stipe with sordid- 

 yellow scales. 

 Pileus not changing as above when bruised. 

 Spores large 11-12.5 X7.5 fj,. 

 Spores not more than half as large. 

 Context having a pleasant odor. t 



Taste mild ; lamellae rather distant. 

 Taste farinaceous; lamellae rather 

 crowded. 

 Context having the odor of sour dough; 

 species known only from Alabama. 

 Sporophores united at the base in a large, fleshy mass ; 

 pilei 2.5-5 cm. broad. 

 Surface of pileus white, but distinctly darker or 

 ently colored at the center. 

 Lamellae very much crowded. 



Pileus small, 2-5 cm. broad ; taste mild. 

 Pileus larger, 5-12 cm. broad; taste bitter or 

 Taste at first mild, becoming acrid. 



5. M. subacuta. 



6. M. acris. 



7. M. albissima, 



8. M. luteomaculans, 



9. M. silvatica. 



10. M. pallida. 



11. M. leucocephaloides. 



12. M. subacida. 



13. M. unifacta. 



14. M. Kauffmanii, 



15. M. serratifolia. 



