128 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN | VOL. 11 



Plants of medium size to robust, light green becoming brownish-green, in 

 mats; stems stout, 5-10 cm long, with leaves to 3.5 mm broad, prostrate; lateral 

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

 branches numerous, short. Line of leaf insertion curved in the upper part. 

 Leaves imbricate, plane, asymmetrically ovate, the margins entire to coarsely 

 spinose-dentate in the upper part, the ventral base often dilated, auriculate 

 with a serrate to dentate or crenulate or entire margin and folded back to 

 form a sac, these better developed on one side of the stem than the other, 

 1.5-2.5 mm long, to 1 mm broad at the base, narrowing to the sharply tridentate 

 apex; teeth large, spreading, six to eight cells long, five to seven cells broad at 

 the base, the margins entire to coarsely spinose and dentate ; leaf-cells uniformly 

 thin- walled, the lumina rounded ; cells of the apical region averaging 20 n, the 

 cuticle faintly verruculose. Underleaves approximate to imbricate, squarrose, 

 subquadrate, broader than the stem, not connate with the leaves, 0.5-1.0 mm 

 long, 0.6-0.9 mm wide, the margin variously toothed with long narrow, often 

 branched teeth or spines. Female branches occasional, the innermost series of 

 bracts large, ovate-lanceolate, divided to one-third their length into usually four 

 dentate-ciliate laciniae, the lateral margins dentate to short-ciliate. Male 

 branches and perianths not seen. Fig. 13, a-h. 



Habitat: In mountain forests among mosses and on logs and tree bases. 



JAMAICA : Cinchona, Earle, (YU) ; John Crow Peak, Maxon # Killip 989 (NY) ; Morce's 

 Gap, Evans 29 (YU) ; s.l., Sherring 7 (BM). 



MEXICO: Oaxaea, Liebmann 298 (type G, isotype FH), Lieb mawn 295b, type of if. 

 planiusculum (G). 



BRAZIL: Caraca, Wainio 46 p.p. (G). 



PERU: Cuzco: La Conveneion, 1800 m, Burs 1160 (NY); St. Gavan, L/chler (G). 

 BOLIVIA: Yungas, Rusby 3029, type of B. rusbyi (NY). 



There is considerable variation in the leaves of plants from different areas. 

 The outer margins and the teeth may be entire, crenulate, serrate and dentate 

 or spinose. The ventral auricles are always poorly developed on leaves in which 

 the outer margins are scarcely crenulate or serrate, while in leaves with coarsely 

 dentate teeth, the auricles are conspicuous, long with a conspicuously serrate- 

 dentate margin, and often folded back, forming a sac. Such ventral auricles 

 and sacs were best developed on the plants from Peru, collected by Bues. They 

 were also present in some of the plants from Jamaica, but were not so large 

 or so well developed. Large auricles may be conspicuous on the row of leaves 

 on one side of the stem and scarcely developed on the row of leaves opposite. 

 Such sacs are not developed in any other American species of Bazzania. 



14. Bazzania quadricrenata (Gottsche) Trevisan, Mem. 1st. Lomb. 13: 414. 

 1877. 



Mastigobryum quadricrenatum Gottsche in Stephani, Hedwigia 25: 206. pi. 1. f. 1-4. 1886. 

 Mastigobryum quadricrenatum forma paupercula G. A. Lindberg, Hedwigia 25: 206. 1886. 

 (nomen nudum.) 



Mastigobryum martiannm G. A. Lindberg (nomen nudum). Non if. martiannm Gottsche 

 in Stephani, 1886. 



Plants of medium size to large, olive-green to brownish-green, becoming 

 brown ; stems to 5 cm or more long, with leaves to 3.5 mm broad, prostrate to 

 suberect ; lateral branches frequent, mostly 5 mm apart, diverging at a wide 

 angle; flagelliform branches frequent. Leaf insertion curved in its upper part. 



