1966] 



LEAFY HEPATICAE OF LATIN AMERICA — PART II 



225 



Type species: Jungermannia capillaris Swartz. 



The genus in addition to being well represented in the tropical-subtropical 

 areas of Latin America has several species in North America, Europe, Asia, and 

 in New Zealand. 



It may be distinguished from the other genera of the Lepidoziaceae by the 

 presence of two types of lateral branching, the Frullania and Microlepidozia 

 types, the absence of ventral stolons, and underleaves with some shorter, usually 

 subulate segments. 



Key to the Species 



1. Leaf segments subulate, mostly two, rarely three cells wide at the base; leaves divided 

 to three-fourths of their length, the lamina one or two rows of cells high; under- 

 leaves smaller than the leaves, the segments unequal, (subg. Microlepidozia). 

 2. Plants yellowish-, reddish-, or blackish-brown; leaves spreading or erect in the 

 outer part; leaf-cells longer than broad. 

 3. Plants minute; leaves fragile and readily broken. 5. M. fragillima. 



3. Plants filiform to larger; leaves not brittle or breaking up. 

 4. Cuticle conspicuously papillose; (leaf-cells quadrate, 12-16 /i). 2. M. verrucosa. 

 4. Cuticle verruculose to striolate, never conspicuously papillose. 

 5. Cells of the leaf segments twice as long as broad, to 36 n or more long. 



4. M. flagellijera. 



5. Cells of the leaf segments shorter, 24-27 n long. 3. M. herzogiana. 



2. Plants pale green to yellowish-green or brownish-green, regularly pinnate or 

 bipinnate; leaves spreading, concave with the segments curved upward; leaf-cells 

 quadrate or nearly so. 



3. Cuticle of the leaf-cells conspicuously papillose. 2. M. verrucosa. 



3. Cuticle of the leaf-cells faintly to conspicuously verruculose. 1. M. capillaris. 



1. Leaf segments triangular, mostly four (two to five) cells wide at the base, leaves 

 quadrifid to one-half of their length, the lamina three rows of cells high; underleaves 

 nearly as large as the leaves or smaller, (subg. Macrophylla) . 

 2. Leaf-cells of the base of the segments 30-36 X 18 n, the tip usually of one cell, the 



cuticle striolate. 6. M. uleana. 



2. Leaf cells of the base of the segments 20-25 X 18 fi, the tip usually of a row of two 



cells, each 20-30 /* long, the cuticle smooth to faintly verruculose. 7. M. brasiliensis. 



SUBGENUS MICROLEPIDOZIA 



The leaves are transversely inserted, small, deeply quadrifid (trifid on some 

 of the branches), to within one or two cells of the base. The underleaves are 

 very small with one or more of the four or three segments (rarely only two on 

 some of the branches) shorter than the rest. 



1. Microlepidozia capillaris (Swartz) Fulford, Brittonia 14: 122. /. 59-61. 

 1962. 



Jungermannia capillaris Swartz, Prodromus 144. 1788. 

 Lepidozia capillaris Lindenberg in G. L. & N. Syn. Hep. 212. 1845. 

 Mastigophora capillaris (Swartz) Trevisan, Mem. 1st. Lomb. III. 4: 416. 1877. 

 Lepidozia (subg. Microlepidozia) amazonica Spruce, Trans. Proc. Bot. Soc. Edinb. 15: 

 359. 1885. 



Lepidozia (subg. Microlepidozia) fusijera Spruce, Trans. Proc. Bot. Soc. Edinb. 15: 359. 

 1885. 



Lepidozia (subg. Microlepidozia) capillaris K. Miiller in Rabenhorst's Krypt.-Flora 6'-': 

 275. 1914. 



Kurzia capillaris (Swartz) Grolle, Revue Bryol. Lichenol. 32: 173. 1963 (1964). 

 Kurzia amazonica (Spruce) Grolle, Revue Bryol. Lichenol. 32: 173. 1963 (1964). 



