Danaea urbanii Maxon
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Authority
Proctor, George R. 1989. Ferns of Puerto Rico and the Virgin Islands. Mem. New York Bot. Gard. 53: 1-389.
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Family
Marattiaceae
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Scientific Name
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Description
Species Description - Rhizome creeping, slender, beset with closely distichous, laxly spreading fronds. Sterile fronds of thin texture, 40-60 cm long, the stipes shorter than the blades and 2-3-nodose, the nodes somewhat narrow and elongate; otherwise, the stipes usually not over 2 mm thick, deeply grooved and beset with minute, brown, suborbicular, peltate, deciduous scales. Sterile blades lance-oblong, up to 30 cm long and 12 cm broad; pinnae 10-12 pairs and a similar terminal one, oblique, narrowly oblong-linear, inequilateral at the cuneate base, long-acuminate or subcaudate at the apex, subfalcate, the margins subentire or repand-dentate in the basal half or two-thirds, beyond that sharply dentate-serrate, the teeth cuspidate; veinlets mostly forked (a few simple) either near or somewhat above the base; leaf-tissue thinmembranous, somewhat translucent, distinctly paler beneath. Fertile fronds mostly equalling or exceeding the sterile ones, up to 75 cm long.
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Discussion
Type. Fuertes 942, from Barahona, Dominican Republic (US).
A few specimens have been seen that are intermediate between this and the next species; these can perhaps be interpreted as hybrids; further study is needed.
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Distribution
General Distribution. Hispaniola and Puerto
Haiti South America| Dominican Republic South America| Puerto Rico South America|