A. W. JEvans — Hawaiian Hepalicm of the Tribe Juhuloideoe. 449 



of the perianth, which are usually dentate and not crenulate on the 

 margin. 



3. Cololejeunea ceatocarpa (Angstr.) Steph. 



Lejeunea ceatocarpa Angsti*. Ofversigt af Kongl. Vetensk. Akad. 



Furhand. xxix, Haft 4, 27. 1872. 

 Cololejeunea ceatocarpa Steph. Bull, de I'Herb. Boissier, v, 842. 



1897. 



Plate LVII., figs. 7-13. 



Autoicous : plants pale green, creeping, sometimes forming thin 

 patches of considerable size : stems irregularly pinnate : leaves dis- 

 tant or contiguous, the lobe widely spreading, oblong from a very 

 narrow base, antical margin more curved than postical, rounded at 

 the apex, entire or minutely denticulate at apex ; lobule ovate, moi'e 

 or less inflated at least toward base, keel slightly arched, free margin 

 slightly involute near the base, elsewhere appressed to the lobe, 

 bearing a rounded tooth a little beyond the middle, then obliquely 

 truncate and with a small apiculum between the tooth and the end 

 of keel; stylus a single cell, often obsolete: leaf-cells thin-walled 

 with small and very indistinct trigones, marginal cells near apex 

 sometimes with angular outer walls forming minute, blunt teeth : 

 $ inflorescence borne on a principal branch, innovating on one side, 

 usually once floriferous ; bracts unequally bifid, the lobe and lobule 

 obovate, rounded at the apex, entire or the lobe usually slightly 

 denticulate at the apex from projecting cells, the lobule with an apicu- 

 late tooth on the edge ; perianth obovate, compressed, graduall}^ 

 narrowed toward base, obcordate at apex and bearing a short beak 

 at bottom of depression, antical surface plane, postical keel low, 

 cells in upper part, especially on keels, papillose, making the perianth 

 appear denticulate on the edge : c^ spike terminal on a principal 

 branch or occupying a short branch, bracts in five to ten pairs, 

 smaller than the leaves, imbricated, lobe and lobule subequal in size 

 at least toward apex of spike, entire or slightly denticulate ; anther- 

 idia two in each axil. 



Stem 0.05'"'° in diameter, lobes of leaves 0.6x0.85™% lobules 

 0.25 X 0.15'°™, cells at edge of leaf 19/* in diameter, in the middle 

 21/A, at the base 40xl8|ii, lobe of bract 0.65x0.2""", lobule 

 0.35 X 0.12'"™, perianth 0.7 x 0.4'"™. 



On leaves or, more rarel}^ on bark. Oahu : Nuuanu (Cooke); 

 first collected on the island by Andersson. Kauai : Hanapepe Falls 

 (Heller). 



