1962] 



LEAFY HEPATICAE OF LATIN AMERICA — PART I 



39 



phyllia with hyaline tips, regularly bipinnate ; lateral branches mostly 5 cm 

 apart, long, often branched, leafy, becoming attenuate with smaller leaves and 

 underleaves with fewer cilia and laciniae and one less segment, often flagelliform 

 and curved downward in the outer part; stem in transverse section with one to 

 three layers of small cells with very thick, brownish walls surrounding the many 

 larger thick-walled cells of the medulla. Line of leaf insertion transverse. Stem- 

 leaves subsymmetric, short rectangular, mostly 2 mm long, 1.5 mm wide, bisbifid 

 to one-half of their length ; segments long-lanceolate, laciniate-ciliate, ending 

 in a long, often hyaline tip three to five long cells ; margins of the lamina densely 

 ciliate, laciniate and crenulate to the base; cells tending to be in rows, those 

 just below a segment 40-60 X 36 /x, the trigones large, conspicuous, the pits 

 thin-walled, the cells with an additional deposit of material around the wall, the 

 cell lumina rounded, the cuticle coarsely verruculose. Underleaves similar to the 

 leaves, symmetric, scarcely smaller. Plants dioicous. Male inflorescence on a 

 lateral vegetative branch, the bracts and bracteoles in four or five series, the 

 bracts pouched, the bracteoles plane ; antheridia one or two in the axils of the 

 bracts. Female inflorescence terminal on the stem or a leading branch, the bracts 

 and bracteoles similar to the leaves ; archegonia produced in very great numbers 

 over the tip of the stem among the bracts and bracteoles (scales) and para- 

 phyllia, large, tubular, the neck in transverse section of two rings of cells, eight 

 inner cells, from fourteen to sixteen outer cells. Sporophyte developed within 

 a coelocaule (only the very early stages seen. Fig. 6, a-m. 



Habitat : On trees, hanging from branches, and on rocks and soil or among 

 mosses. 



COSTA RICA: San Jose, n of El Copey, 2100-2400 m, Standley 42594 (F). 



COLOMBIA: Cauca: Paramo de Las Papas, Bischler 706 ($), 880, 887 (COL); 

 Cauca: Cordillera Central, quebrada del rjo San Marcos, 2700-2900 m, Cuatrecasas 14783 B 

 (US); Dept. de Valle: Cordillera Occidental, Los Farollones, 3500-3600 m, Cuatrecasas 

 17939 B p.p. (US) ; Bio Napo, Osculati, isotype of Lepidozia cohimbica (G) ; Paramo do 

 S6nson, 10,000, Wallis (G). 



VENEZUELA: Sierra Nevada above Merida, Alston 6915, 6921, 6921A (BM). 



ECUADOR: Quito, Jameson (NY), Jameson 119 (BM) ; Pichincha woods, Jameson 

 337, type of L. aequiloba (NY); Canelos, Spruce, Hep. Spruce (G, NY); Azuay: Rio Patul, 

 2670-3275 m, SteyermarTc 52645 (F) ; Rio Collay, s of El Pan, 2650-3290 m", SteyermarTc 

 53364 (5) (F); Tungurahua, 2500 m, Spruce (MANCH-Kk 854, NY). 



PERU: Cuzco: La Convencion, Bues 1183b (NY). 



BOLIVIA: Tolapampa, 10,000 ft., Williams 2155 (NY); Unduavi 10,400 ft., BrooTcs 

 6835 (NY); s.l., Herzog, type of L. herzogiana (G). 



CHILE: s.l., Lechler 3102, (as S. ochroleuca) (NY). 



The species has also been reported in the following papers: Costa Rica (Herzog, 1938a), 

 Ecuador (Herzog, 1952a, 1957a), Peru (Jack & Stephani, 1892) and Bolivia (Herzog, 1916,. 

 1920). 



Taxa not studied 

 Sendtnera ochroleuca piligera de Notaris, 1857, Valparaiso, Chile. 



References 



Scott, Edith. 1960. A monograph of the genus Lepicolea (Hepatieae). Nova Hedwigia 2: 

 129-172. pi. 1-21. 



Fig. 6. Lepicolea pruinosa. 6 a. Habit of plant to show type of branching. 6 b. 

 Leafy stem, dorsal view, X 33; F, branch of the Frullania type; FL, half -leaf with this 

 branch; P, stem paraphyllia. 6 c. Stem leaf, X 33. 6 d. Tip of a leaf segment, X 180. 

 6 e. Leaf cells just below a segment, X 350. 6 f . Stem underleaf, X 33. 6 g. Stem para- 

 phyllia, X 180. 6 h. Branch leaf, X 33. 6 j. Portion of a transverse section of a stem, 

 X 350. 6 k. Male inflorescence, dorsal view, X 40; B, bract. 6 m. Longitudinal section- 

 through a young female inflorescence, X 40; E, archegonia. 



Drawn from the isotypes. 



