A. W. Evans — Hawaiian Ilepaticm of the Tribe Juhuloidem. 419 



plete. As Herr Stephani has remarked, the vegetative characters of 

 the species are exceedingly variable, and it is rarely possible to 

 describe one of them in a satisfactoiy way without an extensive 

 series of specimens. 



5. BRACHIOLEJEUNEA (Spruce) Schififn. 



Lejeunea subgenus Brachio-Lejeunea Spruce, Hep. Amaz. et And. 



129. 1884. 

 £rachiolejeunea Schiffn.; Engler & Prantl, Nat. Pflanzenfam. i', 



128. 1898. 



Plants medium-sized to large, green or brownish-green, closely 

 appressed to substratum or growing in depressed intricate tufts : 

 stems irregularly pinnate or dichotomous : leaves imbricated, the lobe 

 falcate, entire ; lobule much smaller than lobe, denticulate on mai'gin : 

 underleaves imbricated, orbicular to reniform, slightly cordate or 

 decurrent at base : leaf-cells with distinct trigones : $ inflorescence 

 terminal on a principal branch, innovating on both or, more rarely, 

 on only one side ; bracts often smaller than the leaves ; perianth 

 slightly or not at all compressed, three- to ten-keeled : S spike elon- 

 gated, variously situated. 



1. Brachiolejeunea Sandvicensis (Gottsche). 



Phragmicoma hicolor Mont. Voyage de la Bonite, Botanique, i, 223. 



1846 (not Lejeunea hicolor (Nees) Mont.). 

 Phracjmicoma Sandvicensis Gottsche, Ann. des Sciences nat. IV, viii, 



3U.2)l lo.f. 10-2Jf.. 1857. 

 Phragmicoma sahsqiiarrosa Aust. Proc. Acad. Nat. Sci. Phil, for 



1869 : 225. 

 Lejeunea suhsquarrosa Aust. Bull. Torr. Bot. Club, v, 15. 1874. 

 Mastigolejeunea Sandvicensis Steph. Hedwigia, xxviii, 29. 1889. 



Bull de I'Herb. Boissier, v, 842. 1897. 

 Lejeunea Sandvicensis Evans, Trans. Conn. Acad, viii, 253. 1892. 

 Brachiolejeunea Gottschei Schiffn, Hedwigia, xxxiii, 186. pi. 8, 9. 



/. 20-31. 1894. 

 Phragmicoma Japonica Gottsche Ms.; Schiffn. 1. c. (as synonym). 

 Brachiolejeunea Japonica Steph. Bull, de I'Herb. Boissier, v, 842. 



1897. 



Dioicous: plants brownish- or glaucous-green, closely appressed to 

 substratum or more commonly forming wide depressed mats, often 

 growing in company with other bryophytes : leaves densely imbri- 

 cated, wrapped about the stem when dry, explanate and more or less 



