1892.] 



HEPATICÆ MADAGASCAREENSES. 



7 



coarse, margin at apex entire or distantly denticulate; cells hexa- 

 gonal, of moderate size; trigones large. Underleaves connate 

 with one or botn leaves, with one, more or less broadly, quadrate, 

 some longer than broad, others broader than long, reflexed, upper 

 edge coarsely 8 — 10 dentate. Bracts small, suborbicular, bifid 

 to 1 /srd, segments acuminate, denticulate. Perianth fusiform, 

 triplicate, mouth small, ciliolate ciliola few. 



Dimensions. Stems about an inch long, with leaves (moiste- 

 ned) 2.5 mm. to 3. mm. wide, diameter of stem .25 mm., leaves 

 1.1 mm. x .8 mm., 1.2 mm. X .85 mm., 1.1 mm. X .7 mm., 

 cells .025 mm. X .02 mm., .02 mm. X .0175 mm., .035 mm. 

 X .03 mm., .04 mm. X .03 mm., trigones .0175 mm. .02 mm., 

 underleaves .45 mm. X .4 mm., .6 mm. X .5 mm., .5 mm. 

 X .5 mm., bracts .9 mm. X .7 mm., perianth 2.75 mm. 

 X 1.1 mm. 



Hab. Betaforona, Julio, 1882, (185 K), (186 K.). In silva 

 Alamazautra, Julio, 1882, (181 K.), (188 K.), (190 K.). In mon- 

 tibus Ankaratra, 1877, (189 K.), (193 K). 



Obs. Differs from the type in its coarsely dentate under- 

 leaves, which are more quadrate than reniform. Herr Stephani 

 writes me that of Bazzania decrescens there are intermediate 

 forms to be found, and between a poor and a luxuriant form, 

 you may find the denticulation extremely variable, extremely 

 and coarsely dentate, and even duplicate-dentate down to folia 

 and stipula integerrima. Lindenberg, the founder of the species, 

 describes the underleaves, as reniform, with the margin entire, 

 Herr Stephani in his Monograph of the Bazzaniæ says the 

 margin is denticulate, he has no doubt seen the original speci- 

 mens and found them so. 



From Bazzania Novæ Hollandiæ (Nees) it differs in its 

 remarkably convolute leaves when dry, not so oblong, the more 

 quadrate underleaves which are coarsely dentate and destitute 

 of the; broad hyaline margin of thin walled cells, as Herr 

 Stephani calls my attention to. 



15. Cephalozia (Cephaloziella) minutissima n. sp. Kiær et 

 Pears. 



