1968] 



LEAFY HEPATICAE OF LATIN AMERICA PART III 



305 



(NY); Sierra Ichun, 625-725 m, Steyermark 90210 (VEN). Sucre: Peninsula de Paria, 1060 m, 

 Steyermark 94844 p.p., 94851 p.p., 94853 p.p. (VEN). 



BRAZIL: Pao de Assucar, Vie 32 (G) ; Sao Paulo: Santos, Mosen (G-1817, S-PA, UPS). 



PERU: St. Gavan, Lechler (lectotype G-1806, NY) ; without data (MANCH) ; Yungas, 

 6000 m, Rusby 5047 p.p. (NY); Caroico, 1300 m, Buchtien (S-PA). 



24. Calypogeia steyermarkii Fulford, sp. nov. 



Plantae graciles, ad 3 cm longas, olivaceae; folia subquadrata, asymmetrica, 

 latere dorsali brevi, breviter bifida, margine e cellulis longis angustis constato, 130- 

 230 X 15 [x, extremitatibus longe obliquis superpositisque. Amphigastria minuta, 

 bisbifida. Inflorescentiae non visae. 



Plants long, slender, prostrate, brownish-green, in mats or scattered among other 

 bryophytes; stems to 3 cm or more long, with leaves, 1.0-1.4 mm broad, rarely 

 branched; branches leafy, ventral-intercalary from the axils of underleaves. Rhi- 

 zoids dark brown, a few from the base of an underleaf. Line of leaf insertion 

 longitudinal but curving across one stem cell at the upper end. Leaves approximate, 

 subquadrate, conspicuously bordered, asymmetric with the dorsal side shorter, 0.54- 

 0.6 mm long, 0.48-0.6 mm wide at the middle, the apex shortly bifid, the uniseriate 

 teeth 2- to 4-celled; border, except near the apex, of narrow elongate cells 130-230 X 

 15 fx, the ends long-pointed and long-obliquely overlapping, the border near the apex 

 of cells 39-52 X 22-30 jx, the end walls protruding; cells of the upper lamina 30- 

 40 X 26-33 n, thin-walled, without trigones, the cuticle essentially smooth. Under- 

 leaves tiny, bisbifid, the base 4-6 cells across, the 'long' segments 2 or 3 cells long 

 from the base, the 'arms' of 1 or 2 cells. Male and female inflorescences and 

 sporophyte not seen. 



PI. 74. Fig. 24, a-d. 



Habitat: On a limestone bluff. 



VENEZUELA: Anzoatequi: Cerro Peonia, 1000-1450 m, Steyermark 61406 (type VEN). 



25. Calypogeia laxa Gottsche & Lindenberg in G. L. & N. Syn. Hep. 713. 1847. 



Kantia laxa (Gottsche & Lindenberg) Trevisan, Mem. 1st. Lomb. III. 4: 425. 1877. 



Kantia subtropica Stephani, Hedwigia 34: 54. 1895. 



Calypogeia subtropica (Stephani) Stephani, Spec. Hep. 3: 410. 1908. 



Plants of medium to large size, light green, in mats or creeping among other 

 bryophytes; stems prostrate, to 5 cm or more long, with leaves, to 3 mm wide, 

 rarely branched; branches leafy, often asymmetric, or flagelliform, ventral-inter- 

 calary from the axils of the underleaves. Rhizoids frequent, long, in hyaline or 

 yellowish-brown tufts from the lower part of the underleaf. Leaves subimbricate, 

 widely spreading to ascendant, bordered, broadly to narrowly ovate, the apex broad, 

 rounded, bidentate, the teeth erect to divergent, mostly uniseriate, 1 or 2 cells long, 

 the sinus broad U-shaped, the dorsal base scarcely curved, the ventral base not 

 decurrent; leaf border distinct, of rectangular cells below and subquadrate cells 

 above; cells of the upper part of the leaf mostly hexagonal, 39-50 X 30-40 the 

 walls uniformly thickened, the cuticle essentially smooth. Underleaves bisbifid, 



the dorsal margin of a leaf, X 200. 24 c. Cell of the upper part of a leaf, X 500. 24 d. Underleaf, 

 X 160. Drawn from the type. 



Fig. 25. C. laxa. 25 a. Stem, ventral view, X 20. 25 b. Upper part of a leaf, X 200. 25 c. 

 Cell from the upper part of a leaf, X500. 25 d. Cells of the dorsal margin of a leaf, X 200. 

 25 e. Part of an underleaf, X 50. Drawn from the type. 



