1962 



LEAFY HEPATICAE OF LATIN AMERICA — CART I 



139 



24. Bazzania latidens (Gottsche) Fulford, Bazzania Cent. S. Am. 88. /. 30. 



1946. 



Mastigobryum latidens Gottsche in Stephani, Hedwigia 25: 134. pi. 5. f. 7-9. 1886. 



Plants of medium size to large, golden-yellow to yellow-brown, tinged with 

 red in the older portions; stems to 5 cm or more in length, with leaves to 4 mm 

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

 flagelliform branches occasional. Line of leaf insertion curved in its upper half. 

 Leaves subimbricate to imbricate, spreading, plane or deflexed, asymmetrical ly 

 ovate to elongate, straight to ascendent, mostly 2 mm long, 0.8 broad at the base, 

 narrowed a little to the scarcely obliquely truncate, tridentate apex ; teeth mostly 

 large, six to eight cells long, five to eight cells broad at the base, the margins 

 entire ; leaf-cells thin-walled, the lumina angular-rounded, the trigones conspicu- 

 ous, with convex sides, sometimes becoming coalesced, the cuticle verruculose ; 

 cells of the apical region 20-24 p. Underleaves approximate to imbricate, rec- 

 tangular in outline, broader than the stem, 0.6-0.9 mm long, 0.55 mm broad, the 

 lateral margins nearly straight, entire, the apex truncate, entire, undulate to 

 slightly 2-4-lobed, the cells tending to be in rows, mostly 16-24 /a X 16 p, the 

 trigones conspicuous. Sexual branches not seen. Fig. 24, a-c. 



Habitat : On rocks. 



MEXICO: Cepecal, Karsten 9 (G). 



BRAZIL: s.l., Glaziou 1792 (type G, isotype FH). 



25. Bazzania longa (C. G. Nees) Trevisan, Mem. 1st. Lomb. 13: 415. 1877. 



Jungcrmannia longa C. G. Nees, Linnaea 6: 623. 1831. 



Jungcrmannia stolon/if era Sieber, PI. Crypt. Exsicc. no. 35, Linnaea 6: 623. 1831. Non 



J. stolonifera Swartz. 

 Mastigobryum Ion gum C. G. Nees in G. L. & N. Syn. Hep. 231. 1845. 

 Mastigobryum gottscheanum Lindenberg in G. L. & N. Syn. Hep. 224. 1845. 

 Bazzania gottscheana Trevisan, Mem. 1st. Lomb. 13: 414. 1877. 



Mastigobryum speciosum Gottsche, Husnot, PI. Antilles no. 213. 1868; Husnot, Rev. Bryol. 

 2: 3. 1875 (nomen nudum); Gottsche in Stephani, Hedwigia 25: 233. pi. 1. f. 1-3. 

 1886. 



Mastigobryum subfalcatum Gottsche in Stephani, Hedwigia 25: 234. pi. 1. f. 4-6. 1886. 

 Bazzania subfalcata Spruce, Jour. Linn. Soc. Bot. 30: 356. 1895. 

 Mastigobryum tenue Stephani, Spec. Hep. 3: 448. 1908. 

 Mastigobryum trinitatis Stephani, Spec. Hep. 6: 483. 1924. 



Plants of medium size to robust, dark green, becoming deep red-brown ; stems 

 stout, to 10 cm long, with leaves to 5.5 mm broad, prostrate or ascending to erect ; 

 lateral branches distant, diverging at a wide angle ; flagelliform branches fre- 

 quent, long. Line of leaf insertion curved in its upper half. Leaves imbricate, 

 slightly to strongly falcate, deflexed, often becoming connivent when dry, asym- 

 metrically ovate, often elongate, 1.5-2.5 mm long, to 1.5 mm broad at the base, 

 narrowing to the obliquely truncate, tridentate apex; teeth mostly large, un- 

 equal, the acroscopie tooth longer than the others, four to eight cells long, three 

 to five cells wide at the base, the margins straight to repand ; leaf-cells thin- 

 walled, the cell cavities stellate, the trigones very large, with strongly convex 

 sides, soon becoming coalesced, the cuticle verruculose ; cells of the apical portion 

 24-34 X 24 p.. Underleaves distant to imbricate, round-quadrate to elongate, 

 0.45-1.2 mm long, 0.45-0.8 mm broad, the apex rounded, entire, to faintly 2-4- 

 lobed. Female branches occasional, the bracts and bracteoles of the innermost 



