[Vol. 1 

 212 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



cupulate pileus here and there lacunose-pervious, and the inner 

 are distinct, crowded, erect, narrow; hymenium inferior, uneven, 

 whitish; basidia simple; spores slightly colored, becoming uneven, 

 ovoid, 5-6 X 4-5 /x. 



On the ground. Costa Rica and Brazil. January. 



^'In substance, texture, color, etc., this species agrees exactly 

 with Thel. cornucopioides and Thel. angustata but in form it ex- 

 hibits a type unique in the Hymenomycetes. The clusters are 

 regularly rounded, very dense, divided all the way to the base 

 into innumerable lobes, of which the interior are free and erect, 

 the exterior regularly ascendant, broader, compressed, clothed 

 underneath by the hymenium and grown together into a cup 

 here and there lacunose-pervious, undulate-crisped at the apex 

 and fimbriate.'^ Translation of the original comment on this 

 species. 



In 1899, I found the type in Herb. Fries to be cinereo-pallid 

 with a slight fuscous tinge and with basidia and spores as stated 

 above but many of the spores even. Romell describes the spores 

 of his specimens from Brazil as ^'hyalinae, laeves, ellips., 5-7 

 x 3-4 mmm.," and as agreeing with the type. I have reexam- 

 ined my sections from the type ; the spores are certainly colored 

 and many of them rough-walled. 



Specimens examined: 

 Costa Rica: San Jos^, Oersted (in Herb. Fries, Univ. UpsaL), 

 type. 



12. T. cornucopioides Fries, (Nov. Symb. Myc. 91.) Actis 

 R. Soc. Sc. Upsal. III. i : 107. 1851.^ 



Type: not known to be in existence; not in Herb. Fries, at 

 Upsala, nor in Kew Herb. 



Pileus pliant becoming rigid, deeply infundibuliform, 5-7} 

 cm. broad, radiately rugose, glabrous, fuscous; stem solid, 

 rather glabrous, pallid; hymenium inferior, somewhat rugose, 

 gray. 



On the ground. Near San Jos6, Costa Rica. 



This species bears so singular a resemblance to Craterellus 

 cornucopioides that from pictures they are scarcely to be dis- 

 tinguished. The present species has the stem truly solid and 

 the substance fleshy pliant when living, nearly stony- woody 

 when dry; stem 5-7 J cm. long, 4-6 mm. thick, equal or attenu- 



1 A figure will be given in Part II. 



