1962] 



LEAFY HEPATICAE OF LATIN AMERICA PART I 



151 



36. Bazzania armatistipula (Stephani) Fulford, Bezzania Cent. S. Am. 490. 



/. 46. 1946. 



Maatiffobrywn arm utistipnlu m Stephani, Spec. Hop. 3: 490. 1908. 



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

 brown; stems slender, to 5 em Long, with leaves to 3 mm broad, prostrate; lateral 

 branches 5 mm or more apart, diverging at a wide angle; flagelliform branches 

 frequent, long. Leaves approximate to imbricate, spreading, plane or nearly so, 

 asymmetrically ovate, mostly 1.4 mm long, 0.65 mm wide at the base, narrowing 

 a little to the transversely truncate, serrate, tridentate apex; teeth two to five 

 cells long, one to five eells broad at the base, the sinuses lunulate, the margins 

 coarsely serrate; leaf-cells with thickened walls and small trigones, the lumina 

 rounded, the cuticle verrueulo.se; the cells of the apical region averaging 25 X 

 25 fx. Underleaves approximate to imbricate, connate by a few cells with one 

 leaf, scarcely broader than the stem, subquadrate, mostly 0.56 mm long, 0.56- 

 0.64 mm broad, with a hyaline border of one to five cells across the top, the lat- 

 eral margins dentate to serrate, the apical margins incised, with three to six 

 spinose-dentate teeth or lobes, the cells of the hyaline border averaging 18 X 12 n, 

 the chlorophyllose cells averaging 20 p., with conspicuous trigones. Sexual 

 branches and sporophyte not seen. Fig. 36, a-e. 



Habitat : In depressed mats over logs and on tree bases in mountain woods. 



CUBA: Sierra Maestra, Bro. Leon, Clement 4' M. Boca 10471 (NY J; Oriontc, Sierra 

 Maestra, Morton 9460a, 9461 (US). 



JAMAICA: s.l., Bdrgcnsen (type G, isotypes FH, YU) ; Blue Mountain, E. G. Britton 

 1193 (NY); Caledonia Peak, M. Farr 1008 p.p. (IJ) ; Chapelton to Bull Head, Underwood 

 3400 (NY) ; Cuna Cuna Mountain, M. Farr 1335, 1337, 1340, 1341, 1343 p.p. (IJ) ; s.l., Wilson 

 186 (NY) j near Hardwar Gap, 4000 ft, Underwood 2242 (NY, YU) ; trail to Hardwar Gap, 

 M. Farr 865, 1250 (IJ) ; summit of Mt. Horeb, M. Farr 951 (IJ) ; John Crow Peak, 5500- 

 5800 ft, Underwood 855 (NY), s.l., Wilson 186 (NY). 



37. Bazzania cubensis (Gottsche) Pagan, Bryologist 42: 38. 1939. 



Maxtigobryum cubense Gottsche in Stephani, Hedwigia 24: 248. pi. 3. f. 1. 1885. 



Plants of medium size, olive-green tinged with brown ; stems slender, to 6 cm 

 long, with leaves to 3.5 mm broad, prostrate; lateral branches mostly 1 cm or 

 more apart, diverging at a wide angle ; flagelliform branches frequent, long. 

 Leaves imbricate, spreading, deflexed when dry, asymmetrically ovate, 0.9-1.6 

 mm long, 0.6-0.7 mm broad at the base, narrowed a little to the mostly trans- 

 versely truncate, tridentate apex ; teeth acute, large to obscure, two to eight cells 

 long and three to six cells broad at the base, the sinuses lunulate, the margins 

 mostly slightly serrulate ; leaf-cells thin-walled, becoming thickened, the lumina 

 angular-rounded, the trigones small, conspicuous, the cuticle very strongly ver- 

 ruculose ; cells of the apical portion 22-25 X 25-30 p.. Underleaves quadrate, 

 subimbricate, narrowly connate with one leaf, squarrose in the upper part, the 

 lateral margins lobed and serrate, the apex incised, the teeth irregular, two to 

 five cells broad at the base, two to four cells high, with entire to serrate margins. 

 Sexual branches and sporophytes not seen. Fig. 37, a-e. 



Habitat : In depressed mats on logs and bases of trees in mountain woods. 



CUBA: Mt. Verde, Wright, Hep. Cubenses Wrightianae (type G, isotype NY, YU) ; 

 Oriente: Moa Region, Webster 812, 816 (MICH); Sierra Maestra, Morton 9459 (US), Bro. 



