1962] 



LEAFY HEPATICAE OK LATIN AMERICA — I'AUT I 



53 



Habitat : On tree trunks. 



GUADELOUPE: Foret de Baines Jaunes, LeGallo 260 (Hb LeGallo). 



DOMINICA: Mt. Diablotin, Elliott 684, (type Manch). 



TRINIDAD: Asinia— Blanchissense Rd, Morne Bleu, A. C. Smith (US). 



12. Trichocolea filicaulis Stephani, Spec. Hep. 4: 59. 1909. 



Trichocolra paupcrcula Stephani, Bibliot. Bot. 87: 230. 1916. 



Plants filiform, pale yellowish-green, in tufts or among other bryophytes; 

 stems very slender, 2-3 em long, with leaves to 1.0 mm broad, simple to irregu- 

 larly pinnate, the branches mostly 2-3 cm long; stems in transverse section to five 

 cells across, the unistratose cortical cells scarcely smaller than the cells of the 

 medulla ; stem paraphyllia absent. Rhizoids not seen. Line of leaf insertion 

 oblique, the leaves suecubous. Leaves distant to approximate, spreading, asym- 

 metric, to 0.5 mm long, 0.8 mm wide, divided to three-fourths of their length 

 into three segments ; segments unequal, rarely branched, the few cilia long, 

 simple or branched, the cells long, the cuticle striolate-papillose ; lamina one or 

 two cells high, the cells averaging 63 X 22 /x. Underleaves mostly as large as 

 the leaves, deeply bifid or bisbifid, the cilia similar to those of the leaf. Branch 

 leaves and underleaves similar to those of the stem. Male and female inflores- 

 cences and sporophyte not seen. Fig. 12, a-c. 



Habitat: On bark. 



DOMINICAN REPUBLIC: s.l., Elliott (G). 

 GUADELOUPE: s.l., VHerminier (type G). 



DOMINICA: Cauliabon, Elliott 1894a; Morne Diablotin, Elliott 2161. (BM). 

 GUATEMALA: Nebja, Sharp 2514. 



BOLIVIA: Cormarapa, Herzog 4314, type of T. paupcrcula (G). 



Additional records reported Dominica (Pagan, 1942), Guadeloupe (Jovet-Ast, 1960), 

 Bolivia (Herzog, 1916). 



Taxon not seen. 



Trichocolea tomcntosa var platyclada Spruce, Jour. Linn. Soc. Bot. 30: 353. 

 1895. Dominica. 



References 



Hatcher, R. 1957. The genus Trichocolea in North, Central and South America (Hepaticae). 



Lloydia 20: 139-185. /. 1-184. 

 ■ — — . 1959. The structure of the female inflorescence and its taxonomic value in the 



genus Trichocolea (Hepaticae). Lloydia 22: 208-214. /. 1-6. 



Temnoma Mitten in W. J. Hooker, Handb. N. Zeal. Flora 750. 1867. 

 Jungermannia auctt. p.p. 



Junffcrmannia sect. I. Temnoma (Mitten) Bescherelle & Massalongo, Miss. Sci. Cap Horn. 

 Bot. 5: 214. 1889. 



Plants of small to medium or large size, whitish becoming light brown, or 

 greenish-brown to dark brown, erect or ascending, radially symmetric, in tufts 

 or cushions or among other bryophytes ; stems simple or with an occasional 

 branch, the branches lateral, of the Frullania type, with the half-leaf at the 

 dorsal base of the branch ; stem in transverse section with the cortical cells 

 scarcely smaller than those of the medulla. Rhizoids when present in tufts from 

 the lamina of the underleaves, the tips branched. Line of leaf insertion trans- 

 verse or oblique, the leaves suecubous. Leaves quadrate-orbicular to quadrate 

 or rectangular, symmetric, quadrifid to one-half or four-fifths of their length, 

 in some species with an additional large tooth or shorter segment on either side 



