54 HEPATIC^. 



flower subtended by a secondary innovation, differs also in the 

 tufted habit, the imbricated leaves (which, although only slightly 

 different in form, have smaller, more chlorophjdlose cells), but, 

 above all, in much smaller obtusely 5-carinate perianths, as com- 

 pared with the large, deeply plicato-carinate perianths of Z. HoltUr 

 Tlie description and observations are taken from Dr. Spruce's 

 communication to the " Journ. of Bot." for Feb. 1887. 



Descriptfon of Plate XIII. — Fig. 1. Plants natural size. 

 2. Portion of stem, antical view x 31. 3. Ditto, postical view 

 X 31. 4. Ditto, X 64. 5. Portion of leaf x 290. 6. Stipule 

 X 64 7. Bract x 31. 8. Bracteole x 31. 9. Perianth x 31. 

 10. Cross-section of perianth x 31. 11. Perigonial amentula 

 X 31 (Tore Cascade, Gr. A. Holt). 



8. Lejeunea ulicina, Tayl. 



Jungermania ulicina, Tayl. in Trans. Bot. Soc. Edinb. p. 115 (1841). 

 Jungermania minutissima, Hook. Brit. Jung. t. 52, ex parte (nee Smithii) (181 G). 

 Lejeunea ulicina, Tayl. G. L. N. Syn. Hep. p. 387 (18-44-). 



Lejeunea minutissima, Spruce in Ann. Nat. Hist, et Trans. Bot. Soc. Edinb. 

 (1849) (nee J. minutissima, Sm.) 



Dioicous, loosely spreading, rarely subcsespitose, often creeping 

 upon mosses, minute, green. Steins straight, not geniculate, 

 vaguely branched, subradiculose. Leaves distant or subcontiguous, 

 erect to erecto-patent (10°-30°), cochleato-concave, rotundo-ovate, 

 at the apex narrower, obtuse or abruptly acute, from the base 

 to J or f (rarely almost to the apex) obtusely complicato-bilobed, 

 postical lobe more or less shorter and narrower, rarely almost 

 equal, turgid at the keel, margin incurved or often plane, apex 

 apiculcito-acute ; cells small, slightly chlorophyllose, subpellucid, 

 smooth or slightly convex, obscurely tuberculose, 4-, 5-, and 6- 

 ant;;ed, walls firm, no trigones or thickened angles. Stipules 

 distant, about 3 times shorter than the leaves, rather broader 

 than the stem, oval, to about ^ or the middle, or rarely below 

 bifid, segments linear-subulate, 2 cells broad below, at the apex 

 1 cell broad. Female flowers terminal, innovations produced on 

 one or both sides. Bracts large, 2 to 3 times larger than the 



