1962] 



LEAF'S HEPATICAE OF LATIN AMERICA — PART 1 



171 



base, the sinuses acute, the margins entire, the ehlorophyllose cells restricted to 

 a small, interior, basal area, similar to those of the margins of the leaf, the 

 hyaline cells larger, more or less rectangular in outline, averaging IS -22 ju. long 

 and wide, the walls uniformly thickened. Sexual branches and sporophytes not 

 seen. Fig. 54, a-g. 



Habitat: On soil and among rocks in mats or intermingled with other 

 bryophytes. 



BRAZIL: Organ Mountains, Gardner (NY); S. Paulo: Barra Mansa, Schiffncr 536, 

 577, 1801, 1817, 1850 (W) ; near Santos, Schiffner 1056 (W) ; S. Catarina, Carl, type of 

 B. carlii (Hb. Herzog). 



CHILE-PATAGONIA : Chiloe Island, Captain King (NY) ; Albert Bay, T)r. Coppinger 

 (NY); Straits of Magellan: Richard, type of M. richardianum (NY). 



Also Africa, Australia. 



55. Bazzania heterostipa (Stephani) Fid ford. Bull. Torrey Club 86: 410. 1959. 

 Maatigobryum heterostipum Stephani, Spec. Hep. 3: 532. 1909. 



Bazzania stephani Fulford, Bazzania Cent. & S. Am. 162. /. 59. 194C. Non Maatigobryum 

 stephani Jack in Stephani. 



Plants pale yellow-£reen to brownish ; stems very slender, to 3 cm or more in 

 length, with leaves to 1.5 mm broad, prostrate ; the lateral branches occasional, 

 diverging at a wide angle; ventral branches frequent, usually leafy. Leaves 

 vittate, approximate to subimbricate, spreading, plane, the teeth and a little of 

 the apical portion often deflexed, asymmetrically oblong-ovate, 0.7-0.9 mm long, 

 mostly 0.35 mm broad at the base, narrowed a little to the transversely truncate, 

 obscurely tridentate or entire apex; teeth one or two cells high, two to four cells 

 broad at the base, the sinuses lunulate, the margins entire ; leaf-cells quadrate to 

 rectangular in outline, with uniformly thickened walls, the lumina rounded, the 

 cuticle verruculose; cells of the apical portions averaging 16 X 16 n, those of 

 the vitta to 32 X 24 p., the walls thin, the trigones conspicuous. Underleaves 

 lar^e, approximate to imbricate, hyaline in part, rectangular in outline, averag- 

 ing 0.35-0.42 mm long, 0.28 mm wide, the apex undulate, 2-4-lobed or -toothed, 

 the ehlorophyllose cells restricted to a small, interior, basal area, the cells quad- 

 rate to rectangular in outline, with uniformly thickened walls. Sexual branches 

 and sporophyte not seen. Fig. 55, a-d. 



Habitat: Over rocks and soil, in mats or tufts or scattered among other 

 bryophytes. 



BRAZIL: Blumenau, Ule 168 (lectotype G, isotype FH) ; without locality, Vic 40 (G) ; 



Fig. 51. Bazzania macrostipula. 51 a. Stem, ventral view, X 15. 51 b. Ventral auricle 

 of a leaf, X 40. 51 c. Leaf-cell, X 350. 



Fig. 52. B. spruceana. 52 a. Stem, ventral view, X 15. 52 b. Leaf insertion on the 

 stem. 52 c. Leaf -cell, X 300. 



Fig. 53. B. tayloriana. 53 a. Stem, ventral view. X 30. 53 I). Leaf-cell, X 400. 53 c. 

 Underleaf, X 30. 53 d. Tooth of an underleaf, the cuticle punctate, X 300. 



Fig. 54. B. nitida. 54 a. Stem, ventral view, X 30. 54 b. Another stem, X 30. 54 c. 

 Apices of leaves, X 30. 54 d. Leaf-cell, X 400. 54 e. Underleaf, X 30 ; H, hyaline part. 

 54 f. Hyaline tooth of an underleaf, X 300. 54 g. Two teeth (hyaline), of another underleaf, 

 X 300. 



Fig. 55. B. heterostipa. 55 a. Stem, ventral view, X 30. 55 b. Another stem, X30; 

 H, hyaline part of an underleaf. 55 c. Leaf -cell, X 400. 55 d. Upper part (hyaline) of an 

 underleaf, X 350. 



