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LEAFY HEPATICAE OF LATIN AMERICA PART III 



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curved, cells of the upper part of the leaf mostly rectangular in outline, 65-70 X 

 26-39 fi, without trigones, the walls uniformly thickened, the cuticle smooth. Leaves 

 often modified, broadly triangular on a flattened stem or in reduced or juvenile 

 forms, the leaves as widely spaced 1 -celled projections with a long slime papilla 

 from a terete stem. Underleaves of 2 adjacent cells, these often divided, the 2 

 basal cells producing many rhizoid initials. Plants dioicous. Male inflorescence 

 long, terminal becoming intercalary on a branch, the bracts in up to 10 series, the 

 bracts bifid, monandrous, the bracteoles like the underleaves. Female inflorescence 

 large, on a short leafy branch, the bracts and bracteoles in 2 or 3 series, deeply 

 bifid, the segments subulate, entire. Perianth long, cylindrical below, 3-keeled above, 

 the mouth of 6 long lacineae. Regeneration through numerous cell divisions in the 

 cells of the upper margin of the leaf, with rhizoids formed from some of the new 

 cells. No further stages were seen. 



PI. 99. Fig. 1, a-o. 

 Habitat: On soil, cliff faces, tree trunks and decaying logs in humid forests. 



COLOMBIA: Rio Papuri, Teresita, Schultes & Cabrera 19456 p.p. (FH) ; Rio Paca, Wacari- 

 cuare, 650 ft, Schultes & Cabrera 19506, 19508 p.p. (FH) ; Rio Apaporis, Cachivera de Jirijirimo, 

 250 ft, Schultes & Cabrera 12400 p.p. (FH). 



VENEZUELA: Chimanta Massif, Central Section, 1925 m, Steyermark & Wurdack 314 p.p., 

 1940 m, Steyermark & Wurdack 430 p.p., 431 (NY). 



BRAZIL: Amazon, Spruce (NY); San Carlos, Spruce (NY); Panure, Spruce [834] (NY); 

 Silva Amazonica: Fl. Negro et Uaupes, Spruce, Hep. Sprue, (isotypes BM, NY). Amazonas, Eiten 

 5181 (Hb Eiten) ; S. Paulo: Brasso Grande, Itapecirica, Schijfner 1296 (UPS). 



2. Zoopsia cynosurandra Spruce ex Stephani, Spec. Hep. 3: 283. 1908. 

 Alobiella cynosurandra Spruce, ms. Hep. Sprue, in Hb. 



Zoopsidella cynosurandra (Spruce ex Stephani) Schuster, Nova Hedwigia 10: 24. 1965. 



Similar to Z. integrijolia but with the following differences: the ovate, nearly 

 undivided leaf tends to be trapezoidal with the longer segment oblong-rounded; the 

 cells of this segment are often somewhat longer and the plants are monoicous. 



PI. 100. Fig. 2, a-f. 



Habitat: On decaying tree trunk. 



BRAZIL: Fl. Negro et Uaupes, Spruce, Hep. Sprue, (isotypes BM, NY, G-13416). 



3. Zoopsia an ti liana Stephani, Spec. Hep. 3: 282. 1908. 



Plants small in whitish- to yellowish-green mats or scattered among other bryo- 

 phytes. Stems 1-3 cm long, with leaves 0.4-0.8 mm broad, occasionally branched; 

 branches usually ventral-intercalary, axillary, very rarely lateral, of the Frullania 

 type, leafy or short leafy and bearing a male or female inflorescence; stem somewhat 

 flattened, with 2 rows of large cortical cells between the opposite rows of leaves, in 

 transverse section of 6 large cortical cells surrounding a medulla of small cells. 

 Rhizoids in small tufts from the bases of the underleaves, hyaline, short, the tip 

 often bulbous. Line of leaf insertion sublongitudinal. Leaves plane, widely spreading, 

 tending to be ascendant, mostly subquadrate with the broad apex straight or retuse, 

 the 2 elongate papillae at the outer corners; cells of the upper part of the leaf large, 

 tending to be isodiametric, 50-60 X 45-58 n, the walls uniformly thickened, without 

 trigones, the cuticle smooth. Underleaves usually of 2 adjacent cells with small, 

 rhizoid-bearing cells below. Plants monoicous. Male inflorescence terminal or 

 becoming intercalary on a branch, the bifid bracts and the bracteoles in to 10 series. 

 Female inflorescence on a short leafy branch, the bracts and bracteoles in 3 or 4 



