432 A. W. Evans — Hawaiian Hepaticm of the Tribe Juhuloideoe. 



0.5x0.3"''^ long, 0.3'"'° wide, capsule 0.2"^"' in diameter, si^ores 20-25)ti 

 in shortest diameter. 



On JBazzania and Gryptopodiuni. The type-specimens collected 

 by Gaudichaud. Oahu: Nuuanu and Konahuanui (Cooke); also col- 

 lected by Andersson. 



Drepaiiolejeimea tridactyla (Gottsche) of Java, is very close to the 

 Hawaiian plant, but has mamillate leaf-cells. The South American 

 D. palmifolia (Nees) Schiffn. is a somewhat larger plant, the teeth 

 on its lobes are more numerous (varying from five to ten on robust 

 leaves), and the bracts are more laciniate. My description of D. 

 uncinata is drawn from Mr. Cooke's specimens, which closely agree 

 with the original material of the species, kindly sent me by Mr. 

 Mitten, and also with the type-specimen of Lejeunea uiigulata^ 

 received from Professor Nathorst. 



10. CERATOLEJEUNEA (Spnice) Schifen. 



Lejeunea subgenus Cerato-Lejeimea Spruce, Hep. Amaz. et And. 198. 



1884, 

 Geratolejeunea Schiffn,; Engler & Prantl, Nat. Pflanzenfam. i', 125. 



1893. 



Plants medium-sized, j^ellowish to blackish-green, growing in flat 

 mats: stems irregularly branched: leaves contiguous to imbricated, 

 the lobe widely spreading, falcate-ovate, rounded to subacute and 

 often decurved at the apex, entire or crenulate, sometimes toothed 

 near the apex, lobule small, inflated ; leaves at base of a branch 

 often modified into large inflated sacs : underleaves bifid : leaf-cells 

 not papillose, with somewhat thickened walls, a few of the basal cells 

 often ocellate : ? inflorescence borne sometimes on a short branch, 

 sometimes on a larger branch, innovating on one or, more rarely, 

 on both sides ; bracts similar to the leaves, but the lobe often more 

 sharply pointed and more toothed, and the lobule plane; bracteole 

 larger than the underleaves ; perianth with four or five keels, often 

 prolonged above as horns, surface smooth or papillose : 5 inflores- 

 cence occupying a special branch. 



1. Geratolejeunea oculata (Gottsche) Steph. 



Lejeunea oculata Gottsche ; G. L. & N. Syn. Hep. 357. 1845. 

 Ceratolejeunea ocidata Steph. Bull, de I'Herb. Boissier, v, 842. 1897. 



Plate LIT., figs. 1-3. 

 Autoicous : plants brownish-green, creeping : stems irregularly 

 branched : leaves contiguous or subimbricated, the lobe widely 



