376 Evans: New West Indian Lejeuneae 



the margin and 14 x 12 fx in median and basal portions, trigones 

 small and usually distinct but sometimes confluent, intermediate 

 thickenings occasional and usually indistinct ; ocelli commonly two 

 at base of lobe, measuring about 28 x 18/i, a few other cells 

 with similar contents often scattered through the lobe but incon- 

 stant in number and position : underleaves distant, suborbicular 

 from a cuneate base, 0.07 mm. long, bifid about one third with 

 an obtuse sinus and broad, obliquely spreading lobes, each about 

 four cells wide, three cells long and tipped with two cells side by 

 side, margin entire or nearly so, radicelliferous disc sometimes 

 present : inflorescence dioicous : 9 inflorescence on a more or less 

 elongated branch, innovating on one side, the innovation usually 

 simple and sterile ; bracts obliquely spreading (somewhat unequal 

 in size, the one subtending the innovation smaller than the other), 

 sharply complicate and unequally bifid, keel bearing a narrow and 

 entire wing, lobe obovate, measuring (in larger bract) 0.4 mm. in 

 length and 0.25 mm. in width, apex rounded to obtusely pointed, 

 margin irregularly crenulate from projecting cells, lobule obovate, 

 0.35 mm. long, 0.2 mm. wide, mostly rounded at the apex, mar- 

 gin as in lobe; bracteole free or nearly so, obovate, 0.35 mm. 

 long, 0.2 mm. wide, bifid about one fourth with rounded, obliquely 

 spreading lobes and blunt sinus, margin minutely crenulate; peri- 

 anth about one third exserted, obovoid, 0.6 mm. long, 0.35 mm - 

 wide, truncate or slightly retuse at the apex with a short but dis- 

 tinct beak, sharply five-keeled in upper part, the keels not winged 

 but vaguely and irregularly crenulate from projecting cells with 

 thickened walls : d inflorescence and mature sporophyte not seen. 

 (Plate 26, figures 14-25.) 



On bark of trees. Jamaica : John Crow Peak, Evans (88, ?•?)• 

 No. 88 may be designated the type. 



Apparently the closest ally of H. reflexula is H. itncinata 

 Steph.,* now known from Cuba, Santo Domingo, Puerto Rico, and 

 Trinidad. The two species agree in size, in the form of the leaves 

 and underleaves, and in the measurements of the leaf-cells. The 

 bracts and perianths yield the best characters for separating them. 

 In H. uncinate the margins of the lobes are distinctly toothed, and 

 the keels of the perianth bear dentate to spinose wings, whereas ffl 

 H. reflexula the margins of the bracts are scarcely more than cren- 

 ulate, and the keels of the perianth, although sharp, are destitute 

 of distinct wings. In the absence of floral organs the determina- 



1 1 cdwigia 35 : 97. 1897. See also Evans, Bull. Torrey Club 30 s 549- P l 



20 



/. 12-24. 1903. 



