EVANS: HEPATICAE OF PUERTO RICO 265 
It is perfectly safe to say, therefore, that Leptocolea scabriflora 
is not synonymous with Lejeunea cuneata, even if its relationship 
to Lejeunea obliqua must be left unsettled. 
There are apparently no species very nearly related to L. 
scabriflora in the American tropics, but in Asia, Africa, and the 
islands of the Pacific several close allies have been discovered. 
Only two of these will be considered here, Leptocolea Goebelii 
(Gottsche) comb. nov.,* from Java, and Leptocolea ceatocarpa 
(Angstr.) comb. nov.,t from the Hawaiian Islands. L. Goebelit 
is a little more robust than L. scabriflora, the perianth is distinctly 
obcordate, and the perigonial bracts are diandrous. It is further 
distinguished by its more coarsely denticulate leaves, the teeth 
being sharp and irregularly scattered along the greater part of 
the margin. In L. ceatocarpa the lobes of the leaves are narrower 
than in L. scabriflora but the character of the margin is much the 
same. The Hawaiian species is distinguished further by its dian- 
drous bracts and by its obcordate perianth, although the emargina- 
tion is less marked than in L. Goebelit. In all three species the 
lobules are essentially the same. 
Leptocolea planifolia sp. nov. 
Pale green, growing scattered or in depressed mats: stems 0.08 
mm. in diameter, closely appressed to the substratum, sparingly 
and irregularly pinnate, the branches widely spreading, not micro- 
phyllous: leaves loosely imbricated, the lobe widely spreading, 
slightly falcate, ovate to subobovate, 0.75 mm. long and 0.6 mm 
wide (on vigorous shoots), broad and rounded at the apex, antical 
margin arching across the axis, outwardly curved from base to 
apex, postical margin straight or slightly curved, continuous with 
the keel or forming a rounded indentation at the junction, margin 
entire throughout, bordered (except at the base and along the 
postical side) by from one to three rows of empty hyaline cells; 
lobule plane throughout or inflated in basal region, narrowly to 
broadly ovate, about 0.25 mm. long and from 0.12 to 0.17 mm. 
* Lejeunea Goebelii Gottsche in Goebel, Ann. Jard. Buitenzorg 7: 49. 
f. 54-50. 1887 Sethe gar of gemmae only). Lejeunea (Colo-Lejeunea) Goebelii 
Schiffn. Nova Acta Acad. Caes. Leop.-Carol. 60: 240. pl. 10. f. I-10. 1893. 
Cololejeunea sesh Schiffn. Conspect. Hepat. Archip. Indici 244. 1898. 
+ Lejeunea ceatocarpa An ngstr. Ofversigt Kongl. Vetensk.-Akad. Férhandl. 294: 
27. 1872. Cololejeunea pate Steph. Bull. Herb. Boissier 5: 842. 18097. 
Evans, Trans. Conn. Acad. 10: 449. pl. 57. f. 7-13. 1900. 
