162 



MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



[VOL. 11 



Plants large, yellow-brown, becoming deeply pigmented in the older por- 

 tions ; stems robust, 10 cm or more in length, with leaves to 5 mm broad ; lateral 

 branches frequent, 1 cm or more apart, diverging at a wide angle; fiagelliform 

 branches frequent, long, the scale-leaves large, ovate, broader than the branch. 

 Leaves densely imbricate, strongly deflexed when dry. asymmetrically ovate, 

 strongly falcate, 2.5-3.5 mm long, ] .5 mm broad at the base, narrowed to the 

 mostly transversely truncate, tridentate apex; the dorsal margin arched from 

 a cordate base, the ventral auricle large, undulate, or with an occasional tooth, 

 without appendages ; teeth spreading, long, acute to acuminate, eight to ten cells 

 long, four to six-cells broad at the base, the margins entire, undulate; leaf-cells 

 thin-walled, becoming thickened, the trigones very large, knot-like, the pits nar- 

 row, the cell walls often obliterated by the enlarging trigones, the lumina stellate, 

 the cuticle faintly verruculose ; cells of the apical portion large, 32—36 X 24/*. 

 Underleaves imbricate, large, round-quadrate, averaging 0.6 mm, long and broad, 

 the base cordate, the auricles mostly rounded, entire, undulate, lobed or faintly 

 toothed, the lateral and apical margins nndulate, faintly lobed, obscurely toothed 

 to entire. Female branches occasional, the bracts of the intermediate and inner- 

 most series long-ovate, divided to one-fourth or one-sixth their length into two 

 or three slender, serrate to spinose laciniae, with cells to 64 mm long, thin- 

 walled. Perianth to 6 cm long, the mouth ciliate-laciniate, the cells to 64 p. long, 

 thin-w T alled. Male branches and sporophyte not seen. Fig. 44, a-e. 



Habitat : In humid forests, in deep ascending tufts, on decaying logs and 

 rocks and on trunks and branches of trees. 



COLOMBIA: R:o Apoporis, Schultes $ Cabrera 12345, 15354 ( FH ) ; Rio Kananari, 

 Schultes $ Cabrera 13200a p.p. (FH) ; Rio Miritiparana, Schultes # Cabrera 16552 (FH), 

 Ri'o Piraparana, Schultes $ Cabrera 17097 (FH). 



VENEZUELA: Serrania Paru, Cowan & Wurdack 31429 (NY). 



BRITISH GUIANA: near Baitica Grove, Jenman (NY). 



BRAZIL: Panure along Rio Negro, Spruce, Hep. Sprue, (isotypes G, NY";; Rio 

 Caupes, Spruce, Hep. Sprue. [B 20] (G) ; Santos, Mosen (FH). 



PERU: Andes Peruv. ; sylva Javita, Spruce, type of M. javitense (G) ; s.l., Webcrbauer 

 1248 (G). 



BOLIVIA: Santa Ana, Williams 2161 (YU, NY). 



45. Bazzania boliviana (Stephani) Fulford, Bull. Torrey Club 86: 404. /. 94- 

 99. 1959. 



Mastigobryvm bolivianum Stephani in Herzog, Biblioth. Bot. 87: 223. /. 164. 

 f-h. 1916. 



Plants of medium size to large, in yellow to dark brown mats; stems to 12 

 cm long, with leaves to 3 mm broad ; lateral branches distant, forming an acute 

 angle with the stem ; fiagelliform branches frequent, the scale-leaves broader 

 than the branch, ovate, 0.24 mm long. Leaves densely imbricate, to 2.3 mm long, 

 to 2 mm broad at the base, narrowed to 0.8 mm broad at the obliquely truncate 

 tridentate apex, the dorsal margin arched from the cordate base which extends 

 across the stem, the ventral auricle large, incised and appendiculate, the ventral 

 margin arched but ascendent ; teeth unequal, six to ten cells long, six to ten 

 cells broad at the base, the basiscopic tooth the smallest ; leaf -cells thin-walled, 

 the trigones conspicuous with bulging sides and becoming coalesced or separated 

 only by narrow pits, the lumina angular-rounded, the cuticle faintly verrucu- 



