Evans : New West Indian Lejeuneae 381 



ole free, narrowly oblong or obovate, 0.4-0.7 mm. long, 0.2-0.35 



mm. wide, entire or vaguely crenulate ; perianth about half ex- 



serted, obovate in outline, 1.2 mm. long, 0.8 mm. wide, cuneate 



toward base, broad and truncate or slightly retuse at the apex 



with a short beak, postical surface with a broad and low keel, 



smooth or with an occasional tooth near the apex, lateral wings 



! extending to below the middle, two or three cells broad, usually 



I bearing from four to nine teeth, those in the apical region spine- 



' like, sometimes three or four cells long and two or three cells wide 



at the base, those along sides smaller and sometimes reduced to 



single projecting cells : c? inflorescence occupying a more or less 



elongated branch, simple or sparingly subdivided, apparently never 



proliferating ; bracts distant to contiguous, usually in from four to 



twelve pairs, the lobe widely spreading, ovate, 0.5 mm. long, 0.3 



mm. wide, plane or nearly so, spinose-dentate, teeth usually four 



or five, the apical sometimes a little larger than the others, lobule 



strongly inflated, ovate in outline, 0.25 mm. long, 0.17 mm. wide, 



free margin revolute and appressed to lobe except in apical region, 



the apical tooth sometimes as in the leaves but more frequently 



poorly developed or obsolete, sinus straight or nearly so ; anthe- 



ridia borne singly or in pairs; bracteoles distant, orbicular, 0.15 



mm. long, entire : mature sporophyte not seen. (Plate 27, fig- 

 ures n-19.) 



On leaves in damp woods. Jamaica : Lapland near Catadupa, 

 600 m. altitude, Harris (imp p. p.). 



If the genus Odontolejeunea is accepted in the restricted sense 

 recently recommended by the writer,* O. longispica is the third 

 species to be definitely recorded from the West Indies, the two 

 others being 0. lunulata (Web. f.) Schiffn., the type of the genus, 

 and 0. Sieberiana (Gottsche) Schiffn. Both of these species are 

 widely distributed in tropical America. The lobule in 0. longispica 

 IS * little aberrant because it bears but a single tooth and because 

 Jhe hyaline papilla, although displaced from the margin, is often 

 i borne on a marginal cell. In all other respects the species is a 



Epical member of the genus. 

 I . When compared with O. lunulata, in which the inflorescence 

 I « also dioicous, 0. longispica is found to be much less robust. 

 e leaves are smaller, the local thickenings of the cell-walls are 



eSS P ron ounced and sometimes scarcely apparent, the underleaves 

 I are more distant, much smaller, and entire. In the perichaetial 



■rrik j T ° rrey Club 3X : 18371904. 0. lunulata and 0. Sieberiana are also de- 

 C " bed and figged in this paperf 





