[Vol. 1 

 200 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



Key to the Species 



Erect species, usually with central stem and pileus divided into very narrow, 

 branching, flattened or cylindric divisions; hymenium inferior or am- 



phigenous 1 



Erect species, usually with central stem and more or less infundibulif orm, 

 cup-shaped or flabelliform pileus, which may be radially split into 



lobes and divisions 2 



Species of incrusting, effuso-reflexed, dimidiate, or applanate habit 5 



1. 2-6 cm. high, much branched, glabrous, with fetid odor when growing, 



perhaps rarely odorless 1. T. palmaia 



1. 3-5 cm. high, much branched, minutely pubescent; stem villose, without fetid 



odor. Compare T. multipartita 2. T. anthocephala 



1. Less than 2| cm. high, branching at or below surface of ground, dusky drab 



except at base 3. T. coespitulans 



1. Less than 2 cm. high, very slender and fragile, cinereous. Known only from 



State of Washington 4- T. scissilis 



1. Large species, highly branched, with body of spore of regular obovoid form. 



Known only from Central_America 5. T. angustata 



2. Hymenium dark colored, i. e., brown to fuscous 3 



2. Hymenium light colored, i. e., pallid to gray 4 



3. Small species, 1^3 cm. high, upper surface usually drying palhd, usually 



deeply cleft or many-parted into narrow divisions; stem villose.^. T . multipartita 

 3. Small species, 6 mm.-2| cm. high, infundibuUform or deeply divided into 

 two or three triangular divisions, or flabelliform ; stem villose. Closely related 



to T. multipartita 7. T. regularis 



3. Fructification 1 cm. high, white; stem white, glabrous. Known only from 



Guadaloupe 8. T. pusiola 



3. l|-5 cm. high, larger species than the three preceding but with thinner pileus, 

 fuscous purple (Rood's brown) throughout, often with the thin lobes imbri- 

 cate like the petals of a carnation; stem villose 9. T. caryophyllea 



3. 2-4 cm., high, somewhat tubular, hymenium vinaceous brown to drab; stem "^ 

 eulctte and pitted but not villose; spores 10-14 n in diameter. Known only 



iiom Jamaica 10. T. magnispora 



3. Large species, 2|-7 cm. in diameter, with upper surface pallid except at the 



center and with the hymenium dark . . . ... . .<^. . . ; . . .%. 13. T. vialis 



4. Small species, less than 2 cm. in height and in diameter, somewhat pallid 



to brick-red 7. T. regularis 



4. Pileus with outer lobes forming a cup and with inner lobes distinct, 

 crowded, erect, cinereo-fuscous. Known from Costa Rica and Brazil. 



11. T. corbiformis 

 4. Large species, 5-7 cm. broad, deeply infundibulif orm, habit and color of 



Crater elluscornucopioides. Costa Rica and Jamaica, .i^. T. cornucopioides 



6. Growing in applanate clusters, effu&o-reflexed, or dimidiate 6 



5. Always incrusting {T. albido-hrunnea is sometimes incrusting) 8 



6. Hymenium pale and colored like the pileus, cinnamon-buff; pileus 



spongy, more than 2 mm. thick; spores 8-10 x 6-8 /x . . .14-T. albido-hrunnea 

 6. Hymenium and pileus yellowish, less than 2 mm. thick; spores 5-6 x 4 /x 



16. T. lutosa 



