1962] 



LEAFY HEPATICAE OF LATIN AMERICA — PART 1 



2:5 



justification for including Pseudolepicolea in that family. The genus is allied 

 to Lophochaete Schuster, from Alaska, and is distinct from it. The genus 

 Blepharostoma, to which the type species was assigned by Schiffner, has very 

 different characteristics. 



Key to the Species. 



1. Leaf -segments long, widely spreading, lanceolate, mostly four cells broad at the base, 



the tip cell usually twice as long as broad. 1. P. quadrilacinata. 



1. Leaf-segments shorter, erect-spreading, lanceolate, mostly six to eight cells broad at 



the base, the tip cell little longer than broad. 2. P. georgica. 



1. Pseudolepicolea quadrilaciniata (Sullivant) Fnlford & J. Taylor, Nova 



Hedwigia 1: 413. /. 32-40. 1960. 



Scndtnera quadrilaciniata Sullivant, Jour. Bot. Kew Misc. 2: 317. 1850. 

 Leperoma ( ?) quadrilaciniata Massalongo, Nuovo Gior. Bot. Ital. 17: 253. 1885. 

 Lepicolea quadrilaciniata Stephani, Bihang Sv. Vet.-akad. Handl. III. 26 6 : 56. 1900. 

 Blepharostoma quadrilaciniatwm Schiffner, Hedwigia 51: 282. /. 8— IS. 1911. 

 Lophochaete quadrilaciniata (Sullivant) Schuster, Jour. Hattori Bot. Lab. 23: 199. 1960. 



Plants of medium size, deep reddish-brown to blackish, tending to be radially 

 symmetric, in erect tnfts; stems slender, 7-8 cm high, with leaves to 2 mm wide, 

 sparingly branched, the lateral branches long, leafy, of the Frullania type or 

 rarely of the Microlepidosia type, or occasionally axillary-intercalary, the ventral 

 branches rare, axillary-intercalary; stems in transverse section with a unistratose 

 cortex of mostly smaller cells. Khizoids infrequent, brown, from the bases of 

 leaves and underleaves. Line of leaf insertion transverse. Leaves distant to 

 imbricate, erect-spreading, bisbifid (some trifid) to two-thirds of their length; 

 segments long, slender, tapering, widely divergent, lanceolate, mostly four cells 

 broad at the base, the tip a row of three or more elongate cells, the end cell twice 

 as long as broad; lamina cuneate, the area below each sinus thickened by a few 

 bulging, variously oriented, superficial cells ; leaf-cells at the base of the segment 

 30-50 X 24 fi, the walls thin, the cuticle faintly striolate. Underleaves like the 

 leaves. Plants dioicous. Male inflorescence terminal, soon becoming intercalary 

 on the stem, the bracts and bracteoles in three to seven series, the bracts deeply 

 concave, the segments short, the bracteoles plane, similar to the underleaves; 

 antheridia in the axils of the bracts. Female inflorescence terminal on the stem, 

 without innovations, the bracts and bracteoles similar to the leaves and under- 

 leaves except for an occasional marginal tooth or a few basal cilia. Perianth 

 inflated, with five broad keels, the mouth ciliate-dentate, contracted. Sporophyte 

 not seen. Fig. 1, a-h. 



Habitat : On rocks and soil along streams in forests and alpine meadows. 



PATAGONIA— TIERRA DEL FUEGO: "In valle fluminis Aysen," Busen (lectotype 

 NY; G) ; s Patagonia, Shottsberg 606 [1908] (as L. georgica) (G) ; s.l., Cape Horn, Staten I., 

 Spegazzini 117- (G) ; Desolation I., Puerto Angosta, 600 m, Busen 216 (G) ; Fuegia, Busen 

 216. 244 (G). 



Additional localities in this area are cited by the following authors: Massa- 

 longo (1885). Stephani (1901a, 1911). 



2. Pseudolepicolea georgica (Stephani) Fulford & J. Taylor, Nova Hedwigia 1: 



416. /. 41-51. 1960. 



Lepicolea georgica Stephani, Sv. Vet.-akad. Handl. 46 n : 73. /. 28, f-g. 1911. 



