1966] 



LEAFY HEPATICAE OF LATIN AMERICA — PART II 



231 



incurved in the outer part, quadrifid to within one cell of the base, the segments 

 subulate, two cells wide at the base, four to six cells long, the cells 36-42 X 

 16-18 ft, the walls scarcely thickened, the cuticle faintly striolate or verruculose. 

 Underleaves smaller, quadrifid or trifid to within one row of the base, one or 

 two segments uniseriate and of three or four cells, the other often long-triangular 

 from a 2-celled base, the cells as in the leaf. Leaves and underleaves of the 

 secondary branches smaller and with fewer segments. Sexual branches and 

 sporophyte not seen. PI. 50. Fig. 4, a-h. 

 Habitat: On trees or rocks along streams. 



GUATEMALA: EI Progreso, above Volcan Santa Louisa, Slcyermark 43631 (F). 

 VENEZUELA: si., ex Hb Sande LaCoste (type G). 



BRAZIL: Itatiaia, at ravine along river, Fuljord, Hatcher, Hell & Vital 775 (Hb 

 Fulford). 



The species has been reported from Brazil by Herzog (1925a). 



5. Microlepidozia fragillima (Herzog) Fulford, Brittonia 14: 122. 1962. 



Lepidozia fragillima Herzog in Skottsberg, Nat. Hist. Juan Fernandez Easter Is. 2 5 : 726. 

 /.<?. 1942. 



Kurzia Jragillima (Herzog) Grolle, Revue Bryol. Lichenol. 32: 174. 1963. (1964). 



Plants filiform, in depressed, tangled, yellow-brown mats; stems very slender, 

 fragile, brittle, 2-A cm or more long, with leaves 0.16 mm wide, pinnate or 

 bipinnate, the lateral branches long often becoming long flagelliform at the tip, 

 the ventral branches occasional, leafy or flagelliform; stems in transverse section 

 with a cortical row of about 12 cells somewhat larger than the cells of the medulla. 

 Line of leaf insertion transverse. Leaves distant to subimbricate, spreading but 

 curved upward in the outer part, stem leaves quadrifid, branch leaves trifid or 

 bifid to within one cell of the base, brittle and broken, the lamina six to eight-cells 

 wide; segments subulate, four to six cells long, mostly two cells wide at the base 

 ending in a uniseriate tip of three or four cells, the cells 18-27 x 10-12 p., the 

 walls slightly thickened, the cuticle conspicuously striolate. Underleaves smaller, 

 bifid or trifid, the segments unequal with one longer, the cells as in the leaf. 

 Plants dioicous. Female inflorescence on a short ventral sexual branch, the 

 bracts and bracteoles in three or four series, the inner series long-ovate, bifid to 

 one-half, with two ciliate laciniae. Male inflorescence, perianth, and sporophyte 

 not seen. PI. 50. Fig. 5, a-d. 



Habitat: On soil in shaded woods. 



Plate 50 



Fig. 3. Microlepidozia herzogiana. 3 a. Stem, dorsal view, X50; F, branch of the 

 Frullania type; FL, dorsal half-leaf with this branch. 3b. Stem, ventral view, X 275. 

 3 c. Leaf X 300. 3 d. Segment of a leaf, X 350. 3 e. Underleaf, X 300. 



Fig. 4. M. flagellifera. 4 a. Primary branch, dorsal view, X 150; F, branch of the 

 Frullania type; FL, dorsal half-leaf with this branch; M, branch of the Microlepidozia type; 

 ML, ventral half-leaf with this branch. 4 b. Secondary branch, ventral view, X 150; F, branch 

 of the Frullania type; M, branch of the Microlepidozia type; ML, ventral half-leaf with this 

 branch. 4 c. Leaf segment, X 350. 4d. Leaf of a primary branch, X 180. 4 e. Leaf of a 

 secondary branch, X 180. 4 f. Underleaf of a primary branch, X 180. 4 g. Underleaf of a 

 secondary branch, X 180. 4h. Transverse section of the stem, X 360. 



Fio. 5. M. jragillima. 5a. Stem, dorsal view, X225; F, branch of the Frullania type; 

 FL, half-leaf with this branch. 5 b. Stem, ventral view, X 225; M, branch of the Microlepidozia 

 type; ML, ventral half-leaf with this branch. 5 c. Branch leaf, X 350. 5 d. Transverse section 

 of a portion of a stem, X 350. 



Drawing from the types. 



