Stenogrammitis prionodes (Mickel & Beitel) Labiak
Descripción
Rhizomes ascending; rhizome scales brown-black, clathrate, ovate-lanceolate, 1.5–2 mm long; fronds clumped; stipes castaneous to black, 2–5 mm long, pilose with straight red-brown hairs 0.3 mm long; blades linear, 3–11 cm long, gradually tapered at both ends, strongly dimorphic, fertile part confined to distal half of blades, rachises with scattered, unevenly bifurcating hairs 0.3 mm; sterile portion of blades pinnatisect, pinnae slightly ascending, 2–3.5 X 0.8–1 mm, oblong to deltate, acute to obtuse, costae obscure; hydathodes present; fertile portion of blades deeply lobed, cut 1⁄3–1⁄2 way to the rachis, 2.5–4.5 mm wide between opposing lobes, 1.5–2 mm wide between opposing sinuses, sinuses 0.5–1 mm deep, costae often barely evident; sori oblong, restricted to the terminal deeply lobed portion of blades, one per lobe, basal, not extending on veins beyond bases of sinuses, glabrous; sporangia glabrous.A
Forma de vida
EpífitaA
Ejemplar revisado
(Related to the synonym Lellingeria prionodes) Chis (Breedlove 22930, DS, NY, 53299, CAS, ENCB). Hgo (Gimate 799, CHAPA, MEXU, NY; Moore 5287, UC, US). Oax (Rzedowski 33365, ENCB; Smith 473, UC). Pue (Pringle 13853, CAS, LL, US, mounted with L. delitescens from Oaxaca; Riba et al. 285, MEXU). Ver (Lira 28, XAL; Palacios Rios 17, XAL).A
Elevación
1050 – 2800 mA
Tipo de vegetación
Bosque de neblina/mesófilo, Selva altaA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
(In relation to the synonym Lellingeria prionodes) The degree of blade dissection, especially that of the fertile distal portion, and soral placement relative to both the proximal portion of the blades and the base of the sinuses are critical features distinguishing taxa in the L. myosuroides complex. Species in which the distal portion of the blade is strictly entire occur outside Mexico. These include L. anamorphosa (Proctor) A. R. Sm. & R. C. Moran, from Jamaica, with blades 4–4.5 mm wide distally. Grammitis skutchii (Maxon) F. Seym., from Guatemala, and Xiphopteris jamesonii Hook., from South America, have a subentire to weakly crenulate-sinuate fertile blade tip, but are probably only extreme forms of Lellingeria myosuroides (see Excluded Species). In material of L. myosuroides from the Greater Antilles, the fertile portion of the blade is crenulate-sinuate (sinuses 0.5 mm or less deep).
Other relatives include L. delitescens, which has the distal portion of the blades pinnatifid (cut 2⁄3 of the way to the rachises, sinuses 1–1.3 mm deep) and sori on the pinnatisect basal portion of the blades, as well as on the distal portion. Even on the distal part of blades, the sori continue on the veins beyond the sinus bases. Lellingeria limula has the segments incised even further toward the rachises, ca. 7⁄8 of the distance. Lellingeria prionodes has blades pinnatisect proximally, but the fertile portion is only shallowly cut (less than halfway to rachis, sinuses 0.5–1 mm deep) into sharply acute lobes; sori are restricted to the modified terminal portions of the blades and do not extend beyond the sinus bases.A
Other relatives include L. delitescens, which has the distal portion of the blades pinnatifid (cut 2⁄3 of the way to the rachises, sinuses 1–1.3 mm deep) and sori on the pinnatisect basal portion of the blades, as well as on the distal portion. Even on the distal part of blades, the sori continue on the veins beyond the sinus bases. Lellingeria limula has the segments incised even further toward the rachises, ca. 7⁄8 of the distance. Lellingeria prionodes has blades pinnatisect proximally, but the fertile portion is only shallowly cut (less than halfway to rachis, sinuses 0.5–1 mm deep) into sharply acute lobes; sori are restricted to the modified terminal portions of the blades and do not extend beyond the sinus bases.A