292 Alexander IV. Evans, 



long and 20-35/x wide, irregular, the long axis varying from 

 parallel to perpendicular to the margin, cells containing oil- 

 bodies usually absent, rarely one or two present : male receptacle 

 borne on a stalk mostly 1-2 cm. long, with two rhizoid-furrows 

 and no air-chambers, the disc mostly 0.8-1 cm. broad, deeply lobed, 

 the lobes or rays mostly four, rarely five or six, palmately dis- 

 posed, the basal sinus sometimes more than 180 degrees broad, 

 the lobes mostly 5-7 mm. long and 1.5-2 mm. wide, rounded, with 

 a thin wavy margin extending across the basal sinus, ventral 

 scales imbricated, mostly in two rows: female receptacle borne 

 on a stalk 2-4 cm. high, with two rhizoid-furrows and two narrow 

 dorsal bands of air-chambers, the disc convex, mostly 6-8 mm. 

 wide, shortly five-lobed, the lobes or rays convex, rounded and 

 separated by shallow sinuses, the basal sinus much broader than 

 the others and approximating a straight line ; involucre firm, the 

 margin sparingly dentate to closely ciliate or laciniate, the teeth or 

 cilia varying from one to five cells in length, sometimes forking ; 

 spores brownish yellow, about 26/Lt in diameter, narrowly mar- 

 gined, the outer face bearing a few low ridges not forming a 

 network ; elaters about 6/i wide, bispiral : cupules closely short- 

 ciliate, the cilia mostly two to four cells long, outer surface 

 without papillae. (Figs. 15-20.) 



A widely distributed species is tropical America. The follow- 

 ing specimens have been examined : 



Puebla: banks of Avenida Hidalgo and path to barranca, 

 Tezuitlan, October, 1908, Barnes & Land 5^y. 



Vera Cruz: Jalapa and vicinity, September, 1906, Barnes & 

 Land, no number (Y.) ; July, 1908, C. G. Pringle 15326 (Y., 

 distributed in PI. Mex. under a manuscript name of Stephani) ; 

 November, 1908, Barnes & Land 556, 614, 626a (Y.) ; vicinity 

 of Orizaba, November, 1908, Barnes & Land 631, 6yo (Y.). 



Guatemala: without definite locality or date, Godman & 

 Sabin (N. Y.) ; Santa Rosa, September, 1894, Heyde & Lux 

 62p3 (N. Y.) ; near the Finca Sepacuite, Alta Verapaz, March 

 and April, 1902, Cook & Griggs 83, 141, 3^4 (U. S., Y.) ; trail 

 from Pangos to Sepacuite, Alta Verapaz, January, 1908, Maxon 

 & Hay 31 1 1 (U. S., Y.) ; Coban, Alta Verapaz, H. von Titer ck- 

 heim 60/4 (N. Y.). 



Costa Rica: Bagnar, Angostura, June, 1874, 0. Kuntze 2102 

 (N. Y.) ; la Verbena, Alajuelita, August, 1894, A. Tonduz 

 15562 (N. Y., Y., distributed by E. Levier under a manuscript 

 name of Stephani) ; Rio Turrialba, March, 1896, /. D. Smith 

 (N. Y.) ; Cuesta de la Vieja, road to San Carbos, April, 1903, 



