Pityrogramma calomelanos (L.) Link
Descripción
Rhizomes erect; rhizome scales 3–5 X 0.5–0.8 mm, concolorous, dark golden brown, margins with acute, tooth-like undulations, not prolonged into hair-like uniseriate tips; fronds to 120 X 20 cm, clumped; stipes 1⁄3–1⁄2 the frond length, dark reddish brown to black, glabrous except for sparse golden brown scales at bases; blades lanceolate, bipinnate-pinnatifid to tripinnate, pinnae equilateral; ultimate segments ascending, lanceolate, texture thin, wrinkled, glabrous adaxially, white-farinose abaxially, margins toothed, slightly recurved; veins free, prominent; sori elongate along the veins, appearing as black specks scattered in the white farina; spores reddish brown; 2n=240 (Jam, Old World).A
Forma de vida
TerrestreA
Ejemplar revisado
Chis (Breedlove 19930, DS, NY). Col (Palmer 1218, NY, US). Gro (Palmer 273, CAS, NY, US). Hgo (Copeland herb. 103, UC, US). Jal (Palafox 5394, GUADA, IEB, UC). Méx (Hinton 7326, NY, US). Mich (Hinton 16295, DS, NY, UC). Nay (Gentry 19511, NY, US). Oax (Mickel 6668, NY, UC). Qro (Rzedowski 42828, ENCB, IEB). QR (Sanders et al. 9993, UC, UCR). Sin (Correll & Correll 28846, US). SLP (Storer 151, US). Tab (Bautista & Cowan 2335, CAS, NY). Tam (Haynes 4302, NY). Ver (Smith 2103, MEXU, MO, NY, UC).A
Elevación
0 – 1200(– 1600) mA
Ecología y Hábitat
In open areas, open rocky slopes, roadbanks, sandy soils near streams, among rocks along streams, rarely in forests.A
Tipo de vegetación
Bosque de pino-encino, Selva baja, Bosque de otro tipoA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Pityrogramma calomelanos is distinguished from P. ebenea by its finer blade dissection, ascending segments, and occurrence at lower elevations.A