Hymeuomycetse, Agaricacere, LettcbsporEe, Collybia. 69 



21. Collybia jamaicensis (Miut.) Miut., Mycologia, 1916, p. 219, Gy))i- 252 

 twims janialcensis Murr., JST. Amer. Fl. IX, p. 373 (1916). — Pileo 

 couvexo^ usqiie 3 cin. lato ; superficie uda, glabra, obscure rubro- 

 bruuuea, deiu aresceudo pallidiori, raargiue iutegro, coucolori, 

 miuute striato ; coutextu teuui, albido, sapore miti ; lamelHs ad- 

 uexis, augustis, confertis, pallidis; stipite cyliudrico, aeciuali, e 

 pruinoso giabro, pallido, cavo, 4-6 cm. long. 3 mm. crasso. 



Hab. subcaespitosa ad nidos formicarum, Castleton, Jamaica, 

 Araer. bor. (F. S. Earle). 



22. Coilybia macrotatorliiza Spegazziui, Rel. mycol. trop. iu Bol. Ac. 253 

 Nac. Cieuc. Cordoba, XXIII, 1919^ Extr. p. 13. — Striipes, laxe 

 lauiellosa, caespitosa, stipitibus basi, 3-10, coutiueuti-fasciculatis 



e fuuiculo corarauui crasso tereti praelougo uudulato saepeque 

 raraoso concolore orientibus, erectis elougatis 50-75 mm. gracili- 

 bus 3-1 mra. raodice fusoideo-cyliudraceis, fuscis apice albescen- 

 tibus, pileis couvexulo-applauatis, 25-30 mra. latis non v. parce 

 urabilicatis, laevibus arabitu laxe obsoleteque radiatim striolatis ; 

 lamellis uon coufertis latiusculis 1,5-1,75 mra. ex albo ochroleucis 

 (in sicco !) utrinque atteuuatis, apicem stipitis attingentibus nou 

 V. vix deuticulo decurreutibus ; sporis obovato-subspbaeroideis 

 raediocribus, 7-8 ^ 5-6, laevibus byaliuis. 



Hah. ad caudices arborum cariosos iu silvis, prope Apiaby Arae- 

 rica austr. (J. Puiggart). 



23. Collybia truncata Peck, Mycologia, 1913, p. 68. — Pileo tenui 254 

 couico V. subcampanulato, 2-3 cra. lato, promiueuti nmbonato, 

 urabone truncato, subfibrilloso, rare rimose areolato, griseo-bruuneo 



V. rufescenti-brunneo ; laraellis sublatis, subventricosis, subdistan- 

 tibus, adnexis, albidis v. subcinereis, obtusis rufescentibus ; stipite 

 aequali, flexuoso 2,5-4 cra. longo, 1,5-2,5 mm. crasso, fibrilloso, 

 farcto V. cavo, radicato v. basi decurabeuti, pileo colore simile ; 

 sporis subgiobosis v. late ellipsoideis, 6-8 » 5-6. 



Rah. in silvis piueis, Stow, Massachusetts, Araer. bor. (S. Davis). 



24. Collybia subdecumbens Peck, Mycologia, 1913, p. 68. — Pileo 2.55 

 tenui, 1-3 cra. lato, subraembrauaceo plus v. minus late convexo, 

 glabro, griseo-brunueo v. nigresceuti-brunneo ; lamellis teuuibus, 

 subconfertis, arcuatis, adnatis, colore variabilibus, albidis, ciue- 

 reis V. subincarnatis, stipite recto v. suberecto, 4-7 cm. lougo 

 2-5 rara. crasso, basi abrupte dccumbenti, saepe compresso, ali- 

 quaudo caualiculato farcto v. cavo, nitido albo ; sporis ellipsoideis 

 10,5 ^ 4. 



