42 HEPATIC.^. 



2. Lejeunea ovata, Tayl. 



Jiingermania serpyllifolia, var. B. ovaia Hook. Brit. Jung, t. 42 (1816). 

 Lejeunea ovata, Tayl. Mss ; G. L. N. Syn. Hep. p. 37G (18-15). 

 Lejeunea Molleri, Steph. " Hedwigia " (1887). 



Dioicous, depresso-csespitose, small, pale to dark green, turning 

 brown when dry and old. Stems creeping, sparingly and irregu- 

 larly branched, pellucid. Leaves subimbricate or contiguous, 

 patent to erecto-patent, unequally bilobed, antical lobe convex, 

 somewhat swollen at the base, hamate, falcato-lanceolate, rarely 

 ovato-lanceolate, gradually acutate, branch leaves acuminate, 

 margin quite entire, postical lobe 2 to 3 times smaller than the 

 antical lobe, ovoid, turgid, free margin involute, quite entire or 

 rarely with an obtuse short segment near the aj)ex, involute or 

 plane, inner margin reaching to the stem, but slightly overlapping 

 it. Cells small, 4-, 5- and 6-angles, subopaque, chlorophyllose, 

 walls thick, angles thickened, trigones minute. Stipules smaller 

 than the postical lobe of leaf, about twice as wide as the stem, 

 subplane, broadly obcordate-triangular, emarginate, sinus broad, 

 segments rotundato-obtuse, widely divergent. Female flowers 

 terminal on short lateral branches, one or two innovations being 

 produced from below the bracts. Bracts unequally bilobed, 

 antical lobe plane oval-acute, postical 2 to 3 times smaller, oval- 

 lanceolate apex obtuse. Bracteole obovate-cuneate, almost to \ 

 emarginate-bifid, segments rotundate. Perianth obovate-clavate, 

 upper portion acutely 5 -angled. Androecia on very short lateral 

 branches ; perigonial bracts 1 or 2 pairs, closely imbricate, erect, 

 unequally bilobed, antical lobe oval-obtuse, postical somewhat 

 similar but smaller ; antheridia oval-globose. 



Dimensions. — Stem J^ to |- inch long, with leaves "5 mm. to "75 

 mm. wide, diara. of stem -05 mm., leaves, antical lobe '325 mm. 

 X '175 mm., postical '175 mm. x -1 mm., antical '375 mm. x '2 

 mm., postical "2 mm. x "l mm., antical '3 mm. x '175 mm., postical 

 •15 mm. X '1 mm. ; cells "02 mm. x '025 mm., "02 mm. x '02 mm., 

 '015 mm. X '02 mm. ; stipules "1 mm. x '15 mm., *! mm. x '125 



