TAB. COXXXIX. 
ASPLENIUM OBTUSIFOLIUM. 
FILICES.—GrznaArTzx. Br. PorvyropraAczz. Kaulf. Firiczs vere. Willd., Spreng. 
Gv. CnaRn. ASPLENIUM, Linn. Sori lineares, sparsi, dorsales. Znvolucrum lateraliter ortum 
ducens, margine superiore libero. Zr. 
ASPLENIUM obtusifolium ; frondibus pinnatis pinnis alternis ovato-oblongis tenui-membranaceis sub- 
pellucidis sessilibus obtusis sinuatis crenatis basi superiore auriculatis inferiore cuneatis, rachi 
alata. 
Asplenium obtusifolium. — Zinn. Sp. Pl. p. 1538. Swartz, Syn. Fil. p.46. ZIFilld. Sp. PI. v.5. 
p.914. Spreng. Syst. Veget. v. A. p. 83. 
. Asplenium letum. — Sieb. Syn. Fil. INo. 199. (non Swartz). 
Lonchitis aquatica membrana tenui contexta. — Plum. Fil. p. 51. £. 67. 
Has. In India Occidentali: Insula Martinicz. Plumier ; Sieber. Insula Cubs. Sprengel. 
Insula Dominice. Kraus, M.D. | | 
Caudex repens, squamosus, inferne radicans. 
Stipes digitalis, compressus, hinc subsulcatus, glaber, nudus. 
Frons oblongo-ovata, pinnata; pinnis subsesquiunciam longis, membranaceo-pellucidis, minute reticulatis, glaber- 
rimis, ovato-oblongis, obtusis, sinuato-crenatis dentatisque, tenui-costatis, venosis ; basi superiore auriculatis, 
inferiore oblique cuneatis. —Hachis glabra, alato-marginata. 
Sori lineari-oblongi. 
Involucrum lineare, tenue, integerrimum. 
Capsule numerosse, fuscae, globosce, annulatee, longe pedicellatze. 
Semina globosa, viridi-fusca, sub summa lente hispidula. 
Fig.1. Portio pinnze cum soris. £2. Portio frondis cum reticulatione. f.3. Capsule. f.4. Semina:—magn. auct. 
This species of 7fspleniwm, long ago figured by Plumier, bears in many respects a considerable 
resemblance to 24.marinum; but its fronds are broader and shorter, the pinnz have quite a diffe- 
rent texture, being remarkably thin, membranaceous and pellucid, and instead of regular serratures 
the margin is sinuato-dentate, the teeth forming so many irregular smallangles. It appears, both 
from its habit and from what Plumier says of its place of growth, to be almost an aquatic fern. 
* It 1s found," observes that author, *at the sources of brooks, upon moist and mossy rocks. I 
have even seen it in the water itself of a spring upon the summit of the Calebasse mountain in 
Martinique." 
