Vittaria lineata (L.) Sm.
Descripción
Rhizomes horizontal, compact, 1–1.5 mm diam.; rhizome scales clathrate, 6–7 mm long, 0.3–0.8 mm wide, uniform in size and cell wall thickness, apices narrowed to hair-like tip, 2 cells wide appearing as a single hair (the central wall between the two cells) for 1⁄3–1⁄2 the scale length, 3–6 cells wide at scale bases; fronds to 40 cm long, 2–3 mm wide, margins recurved; midribs evident abaxially only; paraphyses tan, slender, curved slightly, filiform, 0.1 mm long, the apical cell of each paraphysis not enlarged; spores bilateral.
A
A
Forma de vida
EpífitaA
Ejemplar revisado
Camp (Martínez S. 27880-A, XAL, MEXU). Chis (Breedlove 33174, DS, 57331, CAS; Martínez S. 24991, MEXU, XAL). QR (Castillo R. 195, XAL; Palacios-Rios 3650, XAL). SLP (Pringle 4078, CAS, DS, UC). Tab (Croat 40070, MO, UC; Ortíz 2156, MEXU). Ver (Croat & Hannon 63106, MO; Nee & Taylor 29183, XAL).A
Elevación
50 – 500 mA
Ecología y Hábitat
In lowland, often on palms.A
Tipo de vegetación
Selva altaA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
This species is abundant in the West Indies (at low and middle elevations) and perhaps South America, but in Mexico and Central America it is relatively uncommon (V. graminifolia and V. bradeorum are much more common). Most reports of this species in Mexico are based on misidentifications of V. graminifolia or V. bradeorum. No other species of Vittaria in Mexico or Mesoamerica has bilateral spores and filiform paraphyses. In addition, V. lineata occurs at elevations below about 500 m, whereas V. graminifolia is almost always at higher elevations. Lellinger (1972) synonymized V. deppeana under V. graminifolia, but the type of the former has bilateral spores, and thus agrees with V. lineata.A