JUXGERMAXNIACEAE. 



465 



fragile Lejeunea.] About 40 species, largely of tropical America, 

 species: E. flageUiformis Evans. 



1. Rectolejeunea phyllobola (X'ees & 

 Mont.) Evans. Rectolejeunea. (Fig. 

 513.) Pale green, growing in depressed 

 mats. Leaves loosely imbricated, the lobe 

 orbicular ovate, about i" long, rounded at 

 the apex, entire or nearly so ; lobule inflated, 

 ovate, apex usually tipped with a single 

 blunt cell; leaf-cells thin-walled with small 

 trigones; ocelli none; underleaves distant, 

 bifid to beyond the middle with narrow divi- 

 sions and an acute to lunulate sinus; inflo- 

 rescence autoecious; female inflorescence 

 usually borne on a short branch with a single 

 snbfloral innovation; bracts similar to the 

 leaves but with plane narrow lobules; brac- 

 teole bifid about one third with acute divi- 

 sions and a narrow sinus ; perianth obovate 

 in outline, truncate or slightly retuse at the 

 apex, beak short, ventral surface with a 

 broad bluntly 2-angled keel. [Lejeiuiea 

 phyllobola Xees & Mont.] 



On trees, Church Cave, Walsingham Caves, 

 Paynter's Hill, Castle Harbor ; Florida ; trop- 

 ical North America. 



Type 



12. EUOSMOLEJEUNEA [Spruce] Schiffn, 



Yellowish green and firm. Stems prostrate, often elongated, irregularly 

 branched, the branches as in Eadula ; rhizoids springing from the bases of 

 the underleaves. Leaves complicate-bilobed, the dorsal lobes much larger 

 than the ventral, incubous, attached by a long line, broadly ovate, convex, 

 rounded at the apex, entire or nearly so; lobule strongly inflated, acute, bear- 

 ing a hyaline papilla in the sinus, at the base of the apical tooth ; leaf-cells 

 with conspicuous trigones; ocelli none. Underleaves varying from medium- 

 sized to large, sometimes imbricated, orbicular and often cordate at the base, 

 usually bifid with an acute to lunulate sinus, rarely undivided. Antheridia 

 usually in pairs in the axils of saccate bracts, the latter in more or less 

 elongated androecia, often proliferating. Female inflorescence borne on a 

 more or less elongated branch, with one or two subfloral innovations; bracts 

 similar to the leaves but with plane lobules and sometimes with pointed lobes; 

 bracteole bifid, free. Perianth often roughened by projecting cells, sharply 

 5-keeled, the keels rounded above, beak distinct. Gemmae none. [Greek, 

 fragrant Lejeunea.] About 35 species, largely tropical. Type species: E. 

 tr if aria (Reinw. Bl. & X^'ees) Schiffn. 



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