1968] 



LEAFY HEPATICAE OF LATIN AMERICA PART III 



301 



bordered in the lower part, plane, widely spreading, asymmetric, suborbicular to 

 subquadrate, rarely broadly ovate from a broad base, the dorsal side short, nearly 

 straight with the base slightly curved, the ventral side strongly convex, scarcely 

 decurrent, the tip acute or shortly bifid, the teeth of 1-3 cells; cells of the dorsal 

 margin of the lower two-thirds of the leaf, rectangular and similar to the adjacent 

 cells, 35-50 x 25 p, the marginal cells of the upper third 20-35 x 20 ^ with pro- 

 jecting cell angles; cells of the upper lamina mostly 26-39 X 26-39 n, the walls thin, 

 the trigones very small, the cuticle faintly verruculose. Underleaves distant, small, 

 truncate-ovate, bifid to one-half or more, the segments triangular, the line of 

 insertion transverse to slightly curved. Plants dioicous. Male inflorescence short, 

 catkin-like, the bracts and bracteoles concave, scale-like. Female inflorescence and 

 sporophyte not seen. 



PI. 73. Fig. 20, a-e. 



Habitat: On damp soil, rocks, and tree trunks in forests. 



DOMINICA: Castle Bruce River, Elliott 1652, 1713 (BM) ; Grand Soufriere, Elliott 1811B 

 (BM); Morne Diablotin, 3000 ft, Elliott 1044, 2103 p.p., 2104 p.p. (BM) ; Lagona Flats, Elliott 

 2126 (BM) ; Morne Trois Pitons, Elliott 743 (BM). 



COLOMBIA: Antioquia, near to Pto Valdivia, 800 m, Bischler 7, 8, 12 (COL). Cordillera 

 La Macarena, Pico Renjifo, 1700 m, Schidtes 11228 (FH). 



VENEZUELA: Amazonas: Rio Orinoco, Rio Cunucunuma, 'Camp II,' 1200 m, Maguire, 

 Cowan & Wurdack 29906 (NY). Bolivar: Rio Venamo, 1200-1275 m, Steyermark 92751, 

 92752 (VEN). 



ECUADOR: Andes Quitenses: flumen Bombonasa, Spruce, Hep. Sprue, (type MANCH-Kk 

 1708, isotypes BM, NY, Y). 



PERU: Tatanera, without coll. (S-PA). 



21. Calypogeia rhombifolia var. oolombica Bischler, Candollea 18: 104. /. 34. 



1962. 



The variety is similar to the species but differs in that it is slightly larger and 

 the cells of the leaf are somewhat different. The cells of the dorsal margin in the 

 lower two-thirds of the leaf are long-rectangular, 50-117 X 13-20 p, as are those of 

 the ventral margin and the interior. In contrast, in the species the cells of the 

 dorsal margin are only 35-50 x 25 The underleaves are also somewhat larger. 



PI. 73. Fig. 21, a-f. 



Habitat: On damp soil at altitudes of 500-600 m. 



COLOMBIA: Valle: a 43 km de Buenaventura, de la route Cali-Buenaventura, 500 m, 

 Bischler 477 (type G), same locality, Bischler 475 (G-12428), same locality, 600 m, Bischler 

 443B (G-12427). 



22. Calypogeia densifolia (Stephani) Stephani, Spec. Hep. 3: 408. 1908. 

 Kantia densifolia Stephani, Hedwigia 34: 52. 1895. 



Calypogeia lechleri var. densifolia (Stephani) Bischler, Candollea 18: 101. /. 32. 1962. 



Plants of medium size, olive- to dark green, becoming pigmented with brown, 

 in mats or among other bryophytes; stems prostrate, to 1 cm or more long, with 

 leaves, 1.0-1.5 mm wide, irregularly pinnate; branches frequent, leafy or small- 

 leaved, ventral-intercalary from the axils of the underleaves. Rhizoids occasional, 

 in brown tufts from the bases of underleaves. Line of leaf insertion oblique, nearly 



Fig. 19. C. tenax. 19 a. Stem, ventral view, X 37. 19 b. Portion of the upper margin of a 

 leaf, X 200. 19 c. Cell from the upper portion of a leaf, X 500. 19 d. Segment of an underleaf, 

 X 200. Drawn from the type. 



