Woodsia phillipsii Windham
Descripción
Rhizomes horizontal to ascending, compact, 2–3 mm diam.; rhizome scales bicolorous orange-tan with black central stripe, linear-lanceolate, entire; fronds 6–30 cm, clumped; stipes (1⁄10–)1⁄5–1⁄3 the frond length, stramineous, often dark at attachment, with sparse small scales and glands; blades pinnate-pinnatifid to bipinnate, 2–7 cm wide, linear to narrowly oblong, proximal pinnae somewhat reduced; pinnae 10–18 pairs, lobes obtuse; margins ciliate; vein endings impressed; segment margins somewhat thickened, often lustrous adaxially, sparsely glandular, appearing ciliate due to the presence of multicellular translucent projections on teeth that are often prolonged to form twisted filaments; indusial lobes filamentous most of their length, far exceeding the mature sporangia, making abaxial surface and margin appear long-ciliate; spores 33–48(–53) µm; 2n=76 (USA).A
Forma de vida
Epipétrica, TerrestreA
Ejemplar revisado
BCN (Thorne 61149, MEXU, UC). BCS (León 665, ENCB). Chih (Correll & Gentry 23006, F, LL, MO, US; Palmer 448, NY). Coah (Henrickson 15180, LL). Dgo (Palmer 357, NY). Jal (Villa Castillo 005, CHAPA, NY). Méx (Tejero-Díez 2484, IZTA). Mich (Díaz Barriga 7423, NY). Son (Phillips 675, MICH).A
Elevación
(1000 –)1800 – 3125 mA
Ecología y Hábitat
Among rocks and on ledges, usually granitic or volcanic substrates (occasionally limestone).A
Tipo de vegetación
Bosque de pino-encinoA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Woodsia phillipsii is distinct in having stramineous stipe bases (though may be dark at attachment), very narrow blades (like W. mollis but with smaller segments and fewer pinnae), crustose margins on segment teeth (sometimes flattened and ending in trichome-like filaments), and indusial lobes filamentous most of their length and far exceeding the sporangia. Glands are variable (few to many), and the segment margins are shiny.
Some specimens with larger spores (40–53 vs. 33–48 µm) may be allotetraploid hybrids.
A
Some specimens with larger spores (40–53 vs. 33–48 µm) may be allotetraploid hybrids.
A