LE.IErSKA. '^^ 



Ditto (Killarncy, Dr. Carnii<rton). 11. Sub-bract x lO (Isle of 

 Man, G. A. Holt). T-', 13. Bracts x IG (ditto). 14. Hracteole 

 xlG (ditto). 15. Periauth x 10 (ditto). IG. Cross-section of 

 periantli x IG (ditto). 17. Portion of branch with male catkin, 

 postical view x IG (ditto). 18. Perigonial bract x 24 (ditto). 

 19. Perigonial hracteole x 24 (ditto). 



Genus 3. LEJEUNEA, Libert 



Lejeunea, Lib. in Ann. gen. sc. phys. t. ;">, p. ;')72 (1H20). 

 Pamhdphinus, Gray ct Bennett, Nat. Arr. Br. PI. 1, p. (!«« (1821). 

 Lejeiinece sect, Lejeimeott/piis Dum. Syll. Jung. p. 32 (18;>1). 



Plants usually delicate, small, a few very minute, some robust, 

 creeping amongst mosses or other hepatics, stratified or ca3spitose 

 or pendulous, pallid, whitish or yellowish-green, sometimes dark 

 brown. Stems terete, slender, rarely firm, pinnately branched, 

 rarely pluniDeform or dichotomous, all branches contiguous to 

 the outer base of the leaves, i.e. infra-axillary. Leaves oblique or 

 almost longitudinally inserted, alternate, complicato-bilobed, 

 margin entire, serrulate, denticulate, dentate, spinose or ciliate, 

 rarely laciniate, antical lobe larger, broad or narrow, incubous, 

 postical lobe (lobule) usually rhomboidal or ovate, incurved and 

 ventricose rarely plane ; epidermis smooth, papulose muriculate 

 rarely echinate. Cells subequal, small or medium in size, some- 

 times minute, leptodermous ; trigones and angles rarely conspic- 

 uous. Stipules in nearly all s[)ecies present, in a few wanting 

 bifid or rarely entire. Inflorescence dioicous or monoicous (very 

 rarely paroicous). Andra^cia on amentiform branches, rarely on 

 the chief stem ; bracts subequal, diandrous, very rarely triandrous 

 in a few species monandrous. Female flowers monogynous. 

 Sub-floral innovations where present solitary or binate and 

 opposite, in most species adnate to the bracts. Bracts ? 1 pair, 

 rarely several, planilobed. Perianth free from the bracts, oval 

 oblong or pyriform, terete or angular, variously winged, cristate 

 or ciliate at the angles, leptodermous. Calyptra about half the 

 length of the perianth, obovate or pyritbrm, thin. Pedicel cruciate 

 on the section 4 cells across, quasi-articulate wh<m dry and mostly 



