BENEDICT: ANTROPHYUM 453 
Fl, Bras. 369.) VENEZUELA: Tovar, Fendler 305 (in part). 
Costa Rica: Turrialba, Maxon 180, 1 52; Wercklé. GUATE- 
MALA: Alta Verapaz, Von Tuerckheim 8059. 
Owing to the uncertainty regarding Desvaux’s type, the posi- 
tive ‘application of this name is at present impossible, but there 
seems to be little doubt but that it should replace A. subsessile 
Kunze. The two descriptions agree closely and Kunze himself ad- 
mitted that they might refer to the same plant.* 
A. spathulatum Fée is apparently nothing but an abnormally 
obtuse form which is not very unusual. 
5. ANTROPHYUM CAYENNENSE (Desv.) Sprengel, Syst. 4: 67. 
1827, 
Hemionitis cajennensis Desvaux, Berl. Mag. 5: 311. 1811. 
(Type from French Guiana.) 
Spores triplanate ; paraphyses wanting ; sporangia in branching, 
divergent, slightly sunken lines: frond elliptic, acute or acuminate, 
thin coriaceous, translucent ; costa percurrent; margin reflexed ; 
stipes 2-8 cm. long, blades 13 x 2.3-23x 5 cm. ; areolae divergent 
from the costa, marginal areolae closed, small. 
British Gutana: 1897, Jenman. TrinipaD: Herb. Bot. 
Gard. Trin. 346, 1263; Fendler 151. 
The identity of A. cayennense is rather doubtful. Desvaux in 
1811 described Hemionitis cajennensis from French Guiana, but 
his material was lost sight of and his description would fit either 
of two species now known from that locality. Kunze, however, 
arbitrarily applied this name to the form here described. The 
nomenclature. can be definitely settled only by examination of 
Desvaux’s original material. 
The species which superficially resembles it most is A. Jen- 
mani, from which, however, it differs largely in texture and mar- 
ginal venation. The herbarium specimens examined had nearly 
all bleached out to a light color. Those of A. Jenmant are all 
dark-brown. A. cayennense has a further distinctive character in 
its stipe-scales which have much longer setae than any other of 
the American species. 
6. Antrophyum Dussianum sp. nov. ee 
Spores triplanate ; paraphyses wanting; sporangia in simple 
oF branching slightly sunken lines, divergent from near the costa to- 
