1966] 



LEAFY HEPATICAE OF LATIN AMERICA — PART II 



187 



Mastigophora incurvata Trevisan, Mem. 1st. Lomh. III. 4: 416. 1877. 



Lepidozia lechleri Stephani, Spec. Hep. 3: 567. 1909; Icon. Hep., Lepidozia No. 67. 

 Lepidozia microphylla auctt. p.p. [American plants.] 



Plants slender, coarse thread-like or larger, in intricate yellowish to olive- 

 green or reddish-brown mats; stems to 6 cm long, with leaves to 0.5 mm broad, 

 tripinnately branched, the lateral branches long, usually becoming attenuate- 

 flagelliform, the secondary branches usually crowded, appearing tufted, the 

 ventral flagelliform branches long. Leaf insertion oblique, the leaves incubous. 

 Stem-leaves distant to approximate or imbricate, convex with the segment-tips 

 incurved and tending to touch the stem, 0.2-0.4 mm long, 0.4 mm broad at the 

 base, the dorsal margin of the lamina strongly arched and without teeth, unequally 

 quadrifid from one-fifth to one-third of their length, the segments unequal, 

 incurved, straight to connivent, triangular from a 2- to 5-celled base, the apex 

 acute, of one or a row of several cells; leaf-cells quadrate to rectangular, 

 18-24 x 18 fi, the walls thickened, the lumina rounded, the cuticle smooth. The 

 branch leaves often ascendent to spreading, smaller. Underleaves as wide as the 

 stem or smaller, quadrate to one-half of their length, the segments uniseriate 

 from a 2- or 3-celled base. Male and female inflorescences and sporophyte not 

 seen. PI. 40. Fig. 3, a, b. 



Habitat: Moist banks and sandstone rock faces and on trunks of trees. 



GUATEMALA: n of Sija, Sharp 2260 p.p. (TENN) ; between Chajul and Nebaj, Sharp 

 5306 p.p. (TENN). 



COSTA RICA: La Palma, Standley 16217 p.p. (F) ; San Ramon, Brenes 16206 (F) ; s of 

 Cartago, 7238 ft, Little 5630 p.p. (Hb. E. Little); lagune du Barba et le Carrizal, Pittier 

 6011 (BR). 



COLOMBIA: Monte Quindio, Humboldt, Hb. Rom, ex Lehmann (type G-225) ; Norte 

 del Santander: Sarara, 2150-2250 m, Cuatrecasas, Schultes & Smith 12U8aa, 12448H (US); 

 Huila-Cauea: Paramo de Las Papas, Bischler 769 p.p., 816 p.p., 831 p.p. (COL). 



VENEZUELA: Bolivar: Ptari-tepui, 2410 m, Steyermark 59596, 59893 p.p. (F). 



PERU: Cuzco: La Convencion, Hues 1159 <S (NY); si, Weddell, type of L. lechleri 

 (G) ; Carabaya, Weddell (PC) ; Talanara, Lechlcr3113 (G). 



BOLIVIA: Unduavi, 10,000 ft, Brooke 6861 A 2 (NY); R. de la Reunion, d'Orbigny 314 

 [as M. microphylla], Hb Montagne (PC); same locality, d'Orbigny 315 [as M. trichodes], 

 Hb Montagne (PC). 



It has also been reported from Costa Rica (Stephani. 1893a, Herzog, 1938), Colombia 

 (G. L. & N. 1845; Lindenberg & Gottsche, 1846; Gottsche, 1864) and Pern (Hampe, 1854, as 

 L. microphylla) . 



4. Lepidozia portoricensis Fulford, sp. nov. 



Caules parvissimi ad 2 cm longi, virides pallidi, bipinnati; folia oblique 

 truncato-ovata, quadrifida, cellulis 18x18 p. vel minoribus, parietibus incrassatis, 

 trigonibus distinctis; amphigastria parva, quadrata, quadrifida, segmentis 

 uniseriatis. 



Plants very small, in intricate yellowish to whitish-green patches or scattered 

 among other biyophytes; stems to 2 cm long, with leaves 0.48 mm broad, 

 bipinnately branched, the branches 2-3 mm apart, 2-3 mm long, often branched, 

 becoming flagelliform at the tips, ventral flagelliform branches occasionally 

 produced. Line of leaf insertion oblique. Stem and branch leaves obliquely 

 truncate-ovate, to 0.26 mm long, 0.24 broad at base, the lamina with convex 

 margins, entire, quadrifid to one-half of their length; segments triangular from 

 a 2- or 3-celled base, mostly 5-6 cells long, the apex uniseriate by two or three 

 cells; leaf-cells at the base of the segments quadrate, 18 p. or less, the walls thick, 

 the lumina rounded, the cuticle smooth. Underleaves small, scarcely as broad as 



