1962] 



LEAFY HKPATICAE OF LATIN AMERICA — PART 1 



137 



Mastigobryum paludosum Gottsclie in Stephani, Hcdwigia 25: 243. 1886. (nomen nudum.) 

 Mastigobryum pltyllobolum Gottsche in Stephani, Hcdwigia 25: 243. 188G. Non Bazzania 



phyllobola Spruce. 

 Bazzania krugiana Stephani, Hedwigia 27: 300. pi. 13. f. 40. 1888. 



Mastigobryum saxatile Gottsche in Stephani, Spec. Hep. 3: 470. 1008. (nomen nudum.) 



Mastigobryum krugianum Stephani, Spec. Hep. 3: 447. 1908. 



Masiigobryum dtviduum Stephani, Spec. Hep. 3: 407. 1909. 



Mastigobryum hansenii Stephani, Spec. Hep. 3: 467. 1909. 



Mastigobryum puiggarii Stephani, Spec. Hep. 3: 472. 1909. 



Mastigobryum colombieum Stephani, Spec. Hep. 6: 458. 1924. 



Plants olive-green to golden-brown or dark brown ; stems slender to 6 em or 

 more long, with leaves 1.5-3 mm broad, prostrate to ascending or erect ; lateral 

 branches 0.5-1.5 cm apart, diverging at a wide angle; flagelliform branches fre- 

 quent, long. Leaf insertion curved in the upper part. Leaves approximate to 

 densely imbricate, ascendent, often deflexed and becoming wrapped around the 

 stem when dry. asymmetrically ovate, 0.8-2 mm long, mostly 0.5-1 mm broad 

 at the base, narrowed to the obliquely truncate, tridentate apex, in slender forms 

 sometimes bidentate or acute ; teeth acute, two to six cells long, two to six cells 

 broad at the base, the acroscopic tooth the longest, the margins straight to 

 undulate; leaf-cells thin-walled, the lumina angular-rounded, the trigones con- 

 spicuous, with convex sides, often becoming coalesced, the cuticle faintly verru- 

 culose ; cells of the apical portion averaging 24 X 24 p., or rarely to 30 p.. Under- 

 leaves distant to imbricate, quadrate to oblong, as broad as or broader than the 

 stem, 0.35-1 mm long X 0.35-0.7 mm wide, often squarrose, the apex straight 

 to rounded-entire, or faintly 2-4-undulate or -lobed. Female branches occasional, 

 the bracts and bracteoles of the innermost series ovate, large, divided to one- 

 third or one-fourth of their length into usually three, dentate to ciliate segments, 

 the lateral margins dentate to ciliate, the cells 45-72 p. long X 18 p. wide. Peri- 

 anth long, the mouth laeiniate, with short, erenulate laciniae, mostly three to 

 five cells long. Males branches and sporophyte not seen. Fig. 22, a-h. 



Habitat : Common in mats, deep tufts or scattered among other bryophytes. 

 over logs, tree bases, roeks and soil, in wooded, elevated regions. 



JAMAICA: Summit of Blue Mountain Peak, Maxon $ Killip 1104 (YU, NY); Blue 

 Mountain Peak, 6500-7525 ft, Underwood 1784 (NY), Lewis 96 p.p. (IJ), Bengry 102 p.p. 

 (IJ) j summit of East Peak, Powell # M. Farr 1026, 1028, 1029, 1030, 1033, 1037 (IJ) ; sum- 

 mit of High Peak, M. Farr 901, 911 p.p, 912, 921, 922 (IJ) ; Morce's Gap, Bengry 305 p.p 

 (IJ) ; e. slope, Mossman's Peak, M. Farr 727 (IJ); New Haven Gap, Patterson (Hb. Ful- 

 ford) ; Sir John's Peak, E. G. Britton 1197 (NY); between Sir John's and High Peak, Lewis 

 70b (IJ), Bengry 102 (IJ) ; summit of Sugar Loaf, M. Farr 1080, 1084, 1085, 1087, 1091, 

 1093 (IJ) ; s.l., Harris (NY) ; s.l., Hansen, isotype of M. hansenii (FH) ; s.l., Rehder, type of 

 M. elegant ulum Gottsche (B, isotype FH) ; si, Oicutt 2936, 2937, 2946, 2977, 5322, 5591 

 (BM) ; s.l., Hansen (as M. portoricense) (G). 



DOMINICAN REPUBLIC (Santo Domingo): s.l., Eggcrs, type of B. krugiana (B, iso- 

 type FH). 



PUERTO RICO: Luquillo Mountains, Steere 4359, 4392, 5539; Mt. Britton, Steere 4246, 

 4268; Maricao, Steere 5583; Rio Sabana Trail, Steere 6205 (Hb. Fulford) ; Rio de Maricao, 

 E. G. Britton 2682 (YU). 



GUADELOUPE: Matonba, Buss 211 (NY); Soufriere, Dm** 136 (NY); s.l., ex Hb. 

 Gottsche, isotype of M. paludosum (FH) ; s i., ex Hb. Gottsche, isotype of M. saxatile (FH) ; 

 s.l., Parker (NY) ; s.l., 760 m, Duss 211 (G). 



DOMINICA: summit of Caulisbon, Elliott 1872a, 1918b (BM) ; Morne Mieotrin, Elliott 

 26b p.p., 82a, 1129a p.p. (BM) ; Roseau Valley, Elliott 31b (BM) ; s.l., Elliott 1617 (G). 



ST. VINCENT: s.l., Guilding (NY): s.l., Hooker Hb. ; (type G, isotypes FH, W"). 



MEXICO: Chiapas: Montebello, Sharp 3577 (TENN) ; Michoacan : Cerro Grande, Frye 

 4- Frye 2782 (PH). 



