454 BENEDICT: ANTROPHYUM 
ward the margin: fronds usually narrowly oblong, 20 x 2-40 x 
3-4 cm., tapered gradually both ways, broader a little above 
the middle, long-acute (young fronds acute), subsessile, mem- 
branous, thin, dark-brown when dried ; margin flat or slightly 
reflexed ; areolation rather indistinct; areolae divergent from the 
costa; marginal venation of small closed areolae and some 
free veinlets; costa superficially distinct to the apex but not 
prominent, i 
Guadeloupe, Pere Duss 4226 (type). Also Martinique, Duss 
1549; Dominica, Lloyd 918 ; Trinidad, Fendler 151 B (in Eaton 
herb.) ; Haiti, Vash 1358; Cuba, Eggers 5269, Wright 775. 
Under this species is included all the West Indian A. swbses- 
sile so-called except that from Jamaica, which is placed with A. 
discoideum. It ‘resembles A. lanceolatum, and seems to form a 
connection between this plant and the broader species of the 
genus. It is further distinguished from A. brasilianum by its less 
coriaceous texture and thinner frond, by the presence of rather 
numerous free veinlets along the margin, and by its less spatulate 
outline. From A, discoideum it is distinguishable by its sunken 
soral lines ; its free veinlets are not punctate at the tips and do 
not occur regularly as in the latter form. 
Two variant forms are included. That from Cuba, Eggers 5269, 
Wright 775, is narrower than the type material, 26 x 2.1-40 X 2.5 
cm., and more coriaceous. That from Haiti, Nash 71358, is 
broader and more oblanceolate and acuminate, 25 X 3.5 cm. All 
three forms are alike in having the stipe-scales very long-atten- 
uate, much more so than in any other American species. 
7. Antrophyum Jenmani sp. nov. 
Sporangia and spores not seen; soral lines apparently as in 
A. brasilianum and the other American species of Euantrophyum : 
fronds broadly elliptic to broadly oblanceolate, 19.5 x 4.5-28 X 7 
cm., slightly acuminate, thick, flaccid, friable when dry, opaque ; 
margins slightly reflexed ; stipes thick, 2-5 cm. long; costa dis- 
appearing near the apex; areolation rather indistinct ; areolae 
narrow, sometimes broad in young fronds, in branching rows which 
reach at the margin a wide angle of divergence from the costa; 
marginal areolae open. 
BritisH GuIANA: Potaro River, Jenman (type; det. A. sub- 
sessile) ; Demerara, Mt. Ragwa, /Jenman (det. as above). GUIANA: 
Leprieur rog (U.S. Nat. Herb), 
