1968] 



LEAFY HEPATICAE OF LATIN AMERICA PART III 



389 



PI. 106. Fig. 2, a-k. 

 Habitat: Moist shaded soil banks among other bryophytes. 



GUADELOUPE: Riviere Rouge, 400-900 m, Duss 49-242 p.p. (NY) ; bois de Sofaga, 460 m, 

 Duss 49 (G-618); saut de Bouillante, 710 m, Duss, 242 (type G-616) ; plateau de la Soufriere, 

 600-1400 m, Duss 256 ($) p.p. (NY) ; sJ., 830 m, Duss 259 (G-61S). 



MARTINIQUE: Morne Paillasse, 700-900 m, Duss 92a-221 p.p. (NY). Morne de la Cale- 

 basse, 670 m, Duss 215 (G-617). 



Paracromastigum Fulford & J. Taylor, Brittonia 13: 336. 1961, emend. 12 

 sec Manual, Part II, p. 177 



Plants small, pale green to yellowish-green, sometimes reddish-brown at the tips; 

 stems slender, erect and tending to be radial, or dorsiventral, irregularly branched; 

 lateral branches leafy, of the Frullania type, ventral branches of the Acromastigum 

 type or axillary-intercalary, leafy or flagelliform; stem in transverse section of 9-12 

 cells, the ventral cortical cells smaller than the rest, the cells of the medulla smaller 

 than the dorsal cortical rows. Line of leaf insertion transverse, or oblique with the 

 leaves succubous. Leaves ovate, subquadrate, or rectangular in outline, bifid (occa- 

 sional leaves trifid), to one-half the length. Underleaves bifid (with some trifid). 

 Male inflorescence terminal becoming intercalary on the leafy stem, the bracts and 

 bracteoles in few to many series, similar to the leaves and underleaves. Female 

 inflorescence terminal on a short leafy branch. Perianth cylindrical below, with three 

 broad, rounded keels above, the 3-lobed mouth laciniate and ciliate. 



Type species: Lepidozia subsimplex Stephani, 1911. 



Key to the Species 



1. Stems tiny, more or less radial; leaves and underleaves approximately equal, transversely 



inserted. 1. P. subsimplex. p. 177 



1. Stems larger, leaves at least twice as long as the underleaves. 



2. Plants whitish-green, rarely tinged with red toward the tip; leaves widely spreading, 



tending to be plane. 2. P. pachyr[r]hizum. 



2. Plants yellow-green to brownish, tinged with red near the tip; leaves patent or erect- 

 spreading, more or less concave. 3. P. stipulalum . 



1. Paracromastigum subsimplex (Stephani) Fulford & J. Taylor. See p. 177. 

 pi. 39. 1966. 



add synonym: 



Pseudocephalozia obscura Schuster, Nova Hedwigia 10: 22. 1965. 

 add locality: 



Fuegia: si., Halle 96 (UPS) ; Lago Fagnano, Halle 96, cotype of Pseudocephalozia obscura 

 Schuster annot. (BM). 



12 This genus, based on the species Lepidozia subsimplex Stephani, was included in the Lepi- 

 doziaceae in Part II (see p. 177). With the study of two additional species it is clear that the genus 

 Paracromastigum is not a member of the Lepidoziaceae but rather, belongs to a separate and 

 distinct family along with the new genus Leucosarmentum. 



lower part of a segment, X 500. 2 e. Stem, ventral view, X 50. 2 f. Underleaf, X 180. 2 g. 

 Transverse section of a stem, X 180. 2 h. Female bract, inner series, X 50. 2 i. Segment tip of 

 this bract, X 200. 2 j. One of the lacineae of the mouth of the perianth, X 200. 2 k. Young 

 caudex from the cauducous mass of cells, X 200. Fig. 2 a, c, d, f, k, from Duss 49; fig. 2 b, from 

 Dass 92-221; fig. 2 e, g-j, from Duss 242. 



