A. W. Evans — Hawaiian Hepaticm of the Tribe Jubuloidece. 413 



Perianth slightly compressed with a high, two-angled 

 postical keel, not retuse at apex; inflorescence 

 dioicous. Cololejeunea ovalifolia. 



Lobe more than twice as long as broad. 



Cololejeunea Ilillebrandii. 

 Lobe hyaline-margined, at least near apex. 



Stylus reduced to a single cell, often obsolete; lobule 



plane. Cololejeunea lanciloha. 



Stylus composed of several cells, lobule inflated. 



Cololejeunea longistylis. 

 Underleaves present, doubled (i. e. two for each pair of side-leaves); 

 leaves ending in a long, inflated sac. Colurolejeunea tenuicornis. 



3. LOPHOLEJEUNEA (Spruce) SchifEn. 



Lejeunea subgenus Lopho-Lejeunea Spruce, Hep. Amaz. et And. 119, 



1884. 

 Lopholejeunea Schiffn.; Engler & Prantl, Nat. Pflanzenfam. i', 129. 



1898.* 



Plants medium-sized to large, brown or brownish-green, sometimes 

 deeply tinged with purple or almost black, closely appressed to sub- 

 stratum or growing in depressed and intricate tufts: stems irregu- 

 larly pinnate: leaves imbricated, falcate-ovate, entire; the lobule 

 small, acutely or obtusely pointed at the apex, otherwise entire: 

 underleaves imbricated, orbicular to reniform, entire, slightly or not 

 at all decurrent at base : leaf-cells with more or less thickened walls : 

 ? terminal on a principal branch, without innovations; bracts larger 

 than the leaves, the lobe usually denticulate to laciniate, at least at the 

 apex, lobule small, sometimes indistinct; bracteole subrotund with a 

 broad apex, usually entire; perianth somewhat compressed with two 

 distinct postical keels, both these and the lateral keels tuberculate 

 or alate with dentate to laciniate wings : 6 spike elongated, terminal 

 on a simple branch or occupying its whole length. 



In Herr Stephani's list,f the genus Lopholejeunea is credited with 

 four Hawaiian species, viz : — L. suhnuda, L. gibhosa, L. Mannii and 

 i. Oicahuensis. I have been able to examine type-specimens of all 

 of these and find that they should be referred to a single species, to 



* A fuller synonymy of this and of the following genei-a of the Lejeuneefe is 

 given by Schiffner. The characters of the varioiis genera are given in full both 

 by this author and by Spruce, and the generic descriptions in the pissent paper 

 are largely compiled fi'om the works of these writers. 



t Bull, de I'Herb. Boissier, v, 843. 1897. 



Trans. Conn. Acad., Vol. X. March, 1900. 



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