398 A. W. Evans — Hawaiian Hepaticm of the Tribe Jiibuloideoe. 



more or less distinctly truncate at base, inflated throughout; stylus 

 minute and slender, three or four cells long : underleaves distant, 

 rhombic-obovate, narrowed and not at all cordate at base, bifid about 

 one half, Avith acute lobes and sinus, margins angular-unidentate on 

 sides : leaf-cells with somewhat thickened reddish-walls, trigones 

 and intermediate thickenings distinct: $ inflorescence borne on a 

 principal branch; bracts in two or three pairs, increasing in size 

 toward the perianth, unequally bifid, the lobe broadly ovate, rounded 

 at the apex, entire or slightly sinuate; lobule lanceolate or ovate- 

 lanceolate, acute, or obtuse and apiculate, bearing a lobe-like tooth 

 or stylus at the middle of the inner edge on the innermost bracts, 

 close to the base on the others, otherwise entire ; bracteole slightly 

 connate on one side or free, ovate, bifid about one half with acute 

 lobes Jind sinus, entire or sparingly laciniate-toothed on the sides ; 

 perianth more than half exserted, obovate, truncate above and 

 abruptly narrowed into a short beak, with a broad, usually two- 

 angled keel postically and commonly with one to three low supple- 

 mentary keels on both surfaces, roughened or very sparingly tubercu- 

 late, at least on the keels : 5 bracts in two to ten pairs, occupying 

 a short branch and forming a globose or oblong spike. 



Stems 0.09™"^ in diameter, lobes of leaves 0.4x0.3"^'", lobules 

 0.14 X 0.12""", underleaves 0.14 x 0.15""^, leaf-cells at edge of lobe 12)u,, 

 in the middle \5fx, and at the base 18|U, in diameter, bract I, lobe 

 0.7x0.5"'", lobule 0.6x0.17"^"^, bracteole I, 0.5x0.25"^™, bract II, 

 lobe 0.5x0.4"^'", lobule 0.4x0.15"^"^, bracteole II, 0.35x0.17'"'", 

 perianth 1.1 x 0.75"^"\ 



On trees. Oahu : Nuuanu (Cooke); first collected on the island 

 by Meyen. Kauai: Kipu, Lihue, Half Way Bridge (Cooke). 



JFrullania Oahiiensis is the smallest known Hawaiian Frullania, 

 being even smaller than F. Meyeniana^ with which it often grows 

 and which it somewhat resembles. The regularly pinnate habit of 

 this latter species and its clavate instead of galeate lobule will at 

 once serve to distinguish it. The North American F. Yirginica 

 Gottsche is a much closer ally of F. Oahuensis, but is a somewhat 

 larger plant in all its parts, and its leaves are more strongly cordate 

 at the base. 



The type-specimens of F. Oahuensis are apparently not to be 

 found in the Gottsche Herbarium at Berlin. There is, however, a 

 drawing so labeled among the beautiful " Icones Hepaticarura 

 Ineditae," and this agrees so closely with the specimens collected by 

 Mr, Cooke that I have no hesitancy in pronouncing them the same. 



