Polytaenium feei (W.Schaffn. ex Fée) Maxon
Descripción
Rhizomes short-creeping; rhizome scales clathrate, lance-attenuate, 2–3 X 0.5–0.8 mm; fronds 7–23 cm long, clumped; stipes absent; blades papyraceous, linear-oblanceolate to linear-elliptic, 9–12(–18) mm wide at widest point (1.5–2 mm wide at bases), apices acuminate, laminae glabrous; veins forming 3–4 rows of oblique areoles between midribs and blade margins, veins near blade margins also areolate; sporangia (sori) surficial or in very shallow grooves, following most of the netted vein pattern, at least in distal 2⁄3 of blades; spores pale yellowish, hyaline; 2n=ca. 120 (PR).A
Ejemplar revisado
Chis (Breedlove 53509, CAS, ENCB; Matuda 18389 DS, MEXU, US; Purpus 6758, UC, US). Oax (Mickel 5727, 6465, 7206, NY, UC). Ver (Copeland herb. 159, MICH, UC; Purpus 2230, UC; Ventura A. 12429, ENCB; Wendt et al. 4014, NY).A
Elevación
150 – 1400 mA
Ecología y Hábitat
In wet forests on Atlantic slope.A
Tipo de vegetación
Selva altaA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
This species is distinguished from P. cajenense by the elliptic blades, thinner blade texture, nearly surficial sori, and long axis of the areoles more or less parallel to the midribs. Like P. chlorosporum, P. feei has veins often or mostly free along the blade margins, but these tend to curve and extend for quite a long distance parallel to the blade margins, whereas in P. chlorosporum the free veins are relatively short and oblique or perpendicular to the blade margins. The veins are generally more visible and sunken abaxially in P. feei than in P. chlorosporum.
Polytaenium feei often goes under the name of Antrophyum lanceolatum; however, the epithet lanceolatum cannot be used in Polytaenium for this species because of the prior existence of P. lanceolatum (Sw.) Desv., a synonym of P. lineatum. Material of P. feei from the West Indies is often somewhat larger and has thicker texture; this variation is probably not significant taxonomically.A
Polytaenium feei often goes under the name of Antrophyum lanceolatum; however, the epithet lanceolatum cannot be used in Polytaenium for this species because of the prior existence of P. lanceolatum (Sw.) Desv., a synonym of P. lineatum. Material of P. feei from the West Indies is often somewhat larger and has thicker texture; this variation is probably not significant taxonomically.A