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LEAFY HEPATICAE OF LATIN AMERICA PART III 



331 



the lower part of the segment mostly 30-39 X 15-20 fi, the walls uniformly thick- 

 ened, the cuticle essentially smooth. Underleaves absent. Plants dioicous. Female 

 inflorescence on a short ventral branch, the bracts and bracteoles in 3 series, long 

 ovate, more or less keeled, bifid above, the segments acute, the margins spinose from 

 projecting cells. Perianth long, 3-keeled above, the mouth broad, truncate, irregu- 

 larly short-ciliate and crenulate. [The cilia may disappear later.] Male inflorescence 

 not seen. 



PI. 84. Fig. 3, a-g. 



Habitat: In dense mats over decayed logs, on trunks of trees and at higher 

 elevations, on sandstone. 



JAMAICA: si, Underwood 1230 (Y). 



GUATEMALA: Alta Verapaz, road to Tamahu, 1S0O-1600 m, Standley 91494 (F). 

 HONDURAS: Morazan: Piedra Herrada, Cerro de Uyuca, 1500-1650 m, Standley 4885, 

 11,896 (F). 



COSTA RICA: s of El Palme, Little 5637 (Hb Little). 



VENEZUELA: Aragua: Choroni Pass, 1130 m, Fuljord & Steyermark 1172 (Hb Fulford). 

 Amazonas: summit of Cerro Duida, Steyermark 58381, 58383 p.p. (F). Bolivar: Rio Venamo, 

 950 m, Steyermark 92216, 92231 (type), 92235 p.p. (VEN), the same, 1000 m, Steyermark 92278 

 (VEN). 



4. Nowellia bicornis (Spruce) Fulford, comb. nov. 



Cephalozia wrightii var. bicornis Spruce, Jour. Linn. Soc. Bot. 30: 354. tab. 26, f. 1-4. 1895. 



Plants small, delicate, pale green to reddish, in mats or creeping among other 

 bryophytes. Stem 1-2 cm long, with leaves 0.3-0.4 mm wide, rarely branched; 

 branches lateral of the Frullania type, or ventral-intercalary, leafy, the ventral 

 branch often bearing a female inflorescence. Rhizoids long, from cells of the ventral 

 side of the stem. Line of leaf insertion very short, nearly transverse. Leaves widely 

 spreading with the outer part turned upward or incurved, subimbricate, concave, 

 bilobed to one-half their length, the dorsal segment long triangular from a few-celled 

 base, ending in a capillary tip of 4-6 cells, the ventral segment scarcely more than 

 a row of 4-6 cells, the tips often connivent or folded across each other, the dorsal 

 margin convex bearing one to several 1 -celled teeth, the lunulate sinus bordered by 

 rectangular cells and bearing 1 or 2 teeth, the ventral sac rounded, extending beyond 

 the stem; cells of the capillary tip, about 40 x 20 jx, those of the base of the segment 

 30-40 X 20 fi, the walls uniformly thickened, the cuticle smooth. Underleaves absent. 

 Monoicous and dioicous. Female inflorescence on a short ventral branch, the bracts 

 and bracteoles in 3 series, long ovate, keeled, bifid above, the segments acuminate, 

 the margin denticulate below, variously spinose above. Perianth long, 3-keeled 

 above, the mouth broad, truncate, setose and short-ciliate. Male inflorescence not 

 seen. 



PI. 84. Fig. 4, a-d. 



Habitat: In mats on decayed logs. 



PUERTO RICO: Luquillo Mountains; Pico del Oeste, Steere 5948 (Hb Fulford), Fulford, 

 Crandall & Stotler 452 p.p. (Hb Fulford). 



DOMINICA: si, Elliott 886 (type, cited by Spruce, 1895). 



5. Nowellia wrightii (Gottsche ex Spruce) Stephani in Duss, FI. Crypt. Antill. 



149. 1904. 



Cephalozia wrightii, Gottsche ex Spruce, Jour. Linn. Soc. Bot. 30: 354. 1895. 



Plants small, delicate, whitish to light green becoming tinged with red, in dense 



