1962] 



LEAFY HEPATICAE OF LATIN AMERICA — 



•PART I 



27 



Herzogiaria Fulford, Nova Hedw. 1: 397. 1960. 



Lepicolea auctt. p.p. 



The characters of the genus are those of the species. 

 Type species: Lepicolea teres Stephani. 



Herzogiaria teres (Stephani) Fulford, Nova Bedwigia 1: 398. 27 f. 1960. 



Lepicolea teres Stephani, Bihang Sv. Vet.-akad. Handl. III. 26 17 : 26. 1901. 

 Lepicolea algoides Stephani, Sv. Vet.-akad. Handl. 46": 73. f. 28, d-e. 1911. 



Plants of medium size, radially symmetric, erect, bristly, in brownish -black 

 tufts; leafy stems 5-6 cm long, to 1.5 mm wide, irregularly branched, the 

 branches axillary-intercalary, above cither half of the leaf or underleaf, fre- 

 quently from the axils of male bracts or bracteoles of a terminal inflorescence; 

 branches like the stem, or more slender and microphyllous with t rifid leaves; 

 stem in transverse section having the cells of the medulla a little larger, the 

 walls thin, dark brown, with a broad band of brownish-yellow translucent 

 secondary thickening. Rhizoids occasional, dark brown, from the base of the 

 underleaf. Line of leaf insertion transverse or nearly so. Leaves erect-spreading, 

 approximate to imbricate, symmetric, cuneate, 2-2.5 mm long, pluristratose 

 throughout, bisbifid to three-fourths of their length (more rarely trifld with 

 one sinus deeper, or bifid) ; segments cone-shaped, long, erect-spreading, 4-5 X 

 6-7 cells thick below, tapering to the uniseriate tip of two to four cells, the 

 surface cells rectangular in outline, the cell walls thickened as in the stem; 

 lamina cuneate, of two or three layers of thick-walled cells, the cells in the curve 

 of each sinus large or small, bulging, irregularly arranged, forming an enlarged 

 pore- or knot-like protuberance; surface cells of the lamina 54-72-88 X 18-24/* 

 in outline, thick-walled. Underleaves not different. Plants dioicous, with male 

 and female plants in the same tuft. Male inflorescence terminal but becoming 

 intercalary on the stem or branch, sometimes branched, the bracts and bracteoles 

 in six or more series, like the leaves, with four, three, or two segments, the 

 bracteoles without antheridia, the bracts plane to more or less pouched, or with 

 one or two depressions; antheridia small, one or two, in the axils of the bracts, 

 the stalk short ; paraphyses occasional. Female inflorescence terminal on a stem 

 or branch, without innovations, the bracts and bracteoles similar, in several 

 series; outermost series similar to the leaves but with broader flattened segments, 

 the margins in part unistratose, the intermediate series with broader triangular 

 segments with broad unistratose margins, the inner series with broad, unistratose, 

 triangular segments with sparingly to abundantly crenulate to short-ciliate 

 margins; archegonia seven to ten, the venter broader than the neck; linear or 

 filamentous paraphyses few. Mouth of the (immature) perianth undivided, 

 undulate, entire. Mature perianth and sporophyte not seen. Fig. 1. a-q. 



Habitat : In rocky brook and small lagoon. 



PATAGONIA— TIERRA DEL FUEGO: Ushuaia, Dusen 296 (G); Fuegia, Dusen (G). 

 Isla Paeheco, Skottsberg, type of L. algoides (G). 



vetaformaceae Fulford & J. Taylor, Nova Hedwigia 1: 405. 1960. 



Plants erect, radially symmetric or nearly so, green, without brown pigmenta- 

 tion, irregularly branched; branches both terminal (Frulla nia type) and inter- 

 calary in origin, the intercalary branches axillary, or on the stem at the ventral 

 side of the leaf, or at either side of the underleaf. Line of leaf insertion trans- 



