1968] 



LEAFY HEPATICAE OF LATIN AMERICA PART III 



345 



VENEZUELA: Amazonas: between Esmerelda savanna and Cerro Duida, Steyermark 57825 

 p.p. (F) ; Bolivar: Chimanta Massif, Rio Tirica, 1940 m, Steyermark & Wurdack 428 p.p. (NY) ; 

 Pico de El Avila, 2000 m, Alston 5575 p.p. (BM). 



SURINAM: s.l., Wullschldgel (BM). 



FRENCH GUIANA: Cayenne, without coll. (STR). 



BRAZIL: Itatiaia Park, Rio Maromba, 1100+ m, Fulford, Hatcher, Hell & Vital 756 p.p., 

 768, 770 (Hb Fulford) ; Agueas Negras, Research Station, 2250 m, Fulford, Hatcher, Hell & Vital 

 947 p.p. (Hb Fulford); s.l., Burchell 226A (NY); Amazon, Spruce (NY); Silva Amazonica: Fl. 

 Negro et Uaupes, Spruce, Hep. Sprue, isotypes of O. sphagni var. amazonica (9) (BM, G-13230, 

 NY); Manaos, Rio Negro, Vie 373 (type G-13231) ; S. Paulo: s.l., Schijfner 4282 p.p. (W) ; Mte 

 Jaragua, 8OO-10S0 m, Schijjner 1020 (S-PA, UPS, W) ; "Brasso Grande," 1000 m, Schijjner 1288 

 (UPS, W); Alto da Serra, 900 m, Schijjner 1613 (S-PA, UPS); Caraca, Wainio 27, type of O. 

 caracanum (G-13227), same locality, Wainio, as O. cubana var. minor Stephani Hb (BM); Villa 

 Rica, Martins and Amer. trop., Martins, as J. prostrata [ = original material of f) brasiliensis Nees] 

 (STR), the same, Hb Lehmann (S-PA); s.l., Pater Botmer (S-PA); Uaupes, Jutica, Lutzelburg 

 20908 (S-PA). 



PERU: s.l., Monlagne (STR). 



10. Odontoschisma atropurpureum Stephani, Spec. Hep. 3: 369. 1908. K 



Plants small to tiny, deep red to purple, in mats or more frequently scattered 

 among other bryophytes; stems 1 cm or less long, with leaves 0.5-1.0 mm wide, 

 recurved, the rows of leaves usually folded together; branches ventral-intercalary, 

 rare, leafy or stolon-like, short, whitish or pigmented. Rhizoids few, along the 

 ventral side of the stem. Line of leaf insertion oblique. Leaves tending to be 

 ascendant, orbicular to subrectangular, slightly concave, the margin curved upward; 

 cells of the apical margin mostly 20 /x, the outer wall thickened; cells below the 

 margin 20-25 X 20-15 n, with thin pits separating the large knot-like trigones, the 

 pits tending to be filled with secondary thickening, with the cell lumen rounded, the 

 cuticle verruculose. Underleaves very small, of a few cells, erect-spreading. Sexual 

 branches not seen. 



PI. 89. Fig. 10, a-c. 



Habitat: Over exposed soil, rocks, cliffs and tree trunks, especially at high 

 elevations. 



COLOMBIA: Dept. del Valle: Cordillera occid., Cuatrecasas "A" (US). Cauca: Paramo de 

 Las Papas, 3530 m, H. Barclay & Juajibioy 6011 (Hb Barclay). Huila-Cauca: Paramo de Las 

 Papas, 3530-3620 m, Bischler 672 p.p., 705, 780 (COL). Vaupes: Rio Apaporis, 250 m, Schultes 

 & Cabrera 12355 (FH) ; Rio Kuduyari, Yapoboda, Schultes & Cabrera 14292 (FH) ; Rio Paca, 

 Wacaricuara, 650 ft, Schultes & Cabrera 19503 (FH). 



VENEZUELA: Amazonas: Cerro Yapacana, 100 m, Maguire, Cowan & Wurdack 30608 p.p. 

 (NY). Bolivar: Chimanta Massif, Rio Tirica, Steyermark & Wurdack, at 1925 m, 314, 371 p.p., 

 380, 383, 466, 469 p.p., at 1940 m, 430, 431, at 2165-2180 m, 695 (VEN) ; Rio Ichun, 500 m, 

 Steyermark 90451 (VEN) ; Auyan-tepui, "Drizzly Camp," 1760 m, Steyermark 93347, 93351 

 (VEN) ; Auyan-tepui, Rio Churun, Steyermark, at 1690 m, 93325 p.p., at 2050-3000 m, 93955, 

 "El Penon," 2200 m, Steyermark 94035 p.p. (VEN); Ptari-tepui, 2410 m, Steyermark 59837 p.p., 



8 Under rigorous conditions of growth O. denudalum, O. falcijolium and O. brasiliense often 

 tend to be very small and red. Without further field study it is not certain what the range of 

 forms of each of these species might be under such conditions. 



male inflorescence with perianth, X 20. 9 h. Outline of a segment of a female bract, inner series, 

 X 70. 9 i. Cilia of the perianth mouth, X 275. Figs. 9 a-c, g-i, from the type; d, e, from O. 

 sphagni var. amazonica Spruce, Hep. Sprue; f, from the type of O. caraganum. 



Fig. 10. O. atropurpureum. 10 a. Stem, dorsal view, X 20. 10 b. Cells of the upper margin 

 of two leaves of the same stem, X 275. 10 c. Cell of the upper part of the leaf, X 500. Drawn 

 from the type. 



