Trichomanes angustifrons (Fée) Wess.Boer
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Authority
Mickel, John T. & Smith, Alan R. 2004. The pteridophytes of Mexico. Mem. New York Bot. Gard. 88: 1-1054.
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Family
Hymenophyllaceae
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Scientific Name
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Description
Species Description - Rhizomes slender, long-creeping, ca. 0.2 mm diam.; rhizome hairs dark brown, 0.2 mm long; roots absent; fronds 5–15 x 1–3 mm, distant; stipes very short, 0.5–1 mm, 1/10–1/15 the frond length; blades linear or linear-oblong, mostly entire, irregularly pinnatifid distally; veins free, ascending, with false veins parallel but not connected to true veins, both types running to margins; margins with simple to stellate hairs; sori single on apical lobes; involucres totally immersed, lips spreading, semiorbicular, margin with 1–3 rows of black-walled cells; 2n =68 (Trin).
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Discussion
Didymoglossum angustifrons Fe´e, Me´m. Foug. 11: 113, t. 28, f. 5. 1866. Type. Guadeloupe, L’Herminier s.n. (isotype P!).
The cited specimens are difficult to determine. The involucral lips are not dark, but these may be juvenile specimens.
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Distribution
Epiphytic on tree trunks, in montane rain forests; 1300–1850 m. Mexico; Guat, CR; Gr & L Ant; Col, Ven, Trin, Guy, Sur, Fr Gui, Ec, Peru, Braz, Bol, Parag.
Mexico North America| Paraguay South America| Bolivia South America| Brazil South America| Peru South America| Amazonas Ecuador South America| French Guiana South America| Suriname South America| Guyana South America| Trinidad and Tobago South America| Venezuela South America| Amazonas Colombia South America| West Indies| Puntarenas Costa Rica Central America| Guatemala Central America|