1887.] 



HEPATICAE KNYSNANAE, 



11 



branches few, */é to an inch long arising from the under- 

 side, at right angles; rootlets abundant, long, white and 

 very delicate. Leaves spreading. slightly ascending, sub- 

 horizontal, almost plane, ovate. broadly ovate, rarely broadly 

 acurainate, entire or retuse, surface quite smooth; cells 

 smallish, irregularly roundish oval, full of coloriug matter; 

 trigones distinct, marginal cells quadrate. 



Underleaves present nearly everywhere, occasionally an 

 odd stem is found where they are absent; normal ones 

 broadly subulate, 4 to 5 cells broad at base, half the width 

 of stem, on the gemmiparous branches, large, equal in size 

 to leaves or larger, irregular in shape subrotund or lanceo- 

 late, erose. 



Hab. Knysna (36 p.p. Hb. Kiaer.) 



Measurements. Steins about 1 inch. branches % to an 

 inch, .2 mm diam.; leaves 1.1 mm long X .8 mm broad, 1. X 

 .8, .9 X .9. .9 X .8. .9 X 7; cells V 40 mm .035 mm X .025, 

 .03 X -025, .03 X .02, .025 X .02; underleaves .15 mm long 

 X .1 mm broad, .12 X .1? terminal .4 mm long X .2 mm 

 broad. .3 X .25. 



Obs. Differs from the type by its laxer habit, larger 

 size, leaves almost plane, not concave, more ovate often re- 

 tuse, with a tendency to become slightly acute in the en- 

 tire ones. 



From Cepli. fOdonto.) Sphagni (D.) in the branches not 

 l)eing arcuate, nor rooting at apex. presence of underleaves, 

 gemmiparous, leaves spreading not secund, ovate, ovate-acute, 

 rarely sub-rotund, marginal cells not so distinct. 



I hesitate to raise it to the rank of a species, in the 

 absence of inflorescence, but if it is found to be distinct, I 

 name it Cephalozia (Odontoschisma) africana. 



Description of Pl. IY. Fig. 1. Plant nat. size. 2. Por- 

 tion of gemmiparous branch X 11. 3. Portion of branch 

 X 24. 4—8. Leaves X 24. 9. Portion of leaf X 290. 10, 

 11. Underleaves x 85. 12, 13. Underleaves from near apex 

 of gemmiparous branch X 85. 



