Cheilanthes apiacea Mickel
Descripción
A C. hintoniorum laminis grandioribus et late pentagonis, segmentibus longioribus et indusiis longi-decurrentibus distincta. (Alluding to the frond dissection appearing like some members of the Apiaceae.)
Rhizomes compact, ascending, 2–3 mm diam.; rhizome scales linear-lanceolate, dark red-brown to black, lustrous, 4–5 mm long, entire; fronds to 38 cm long, clumped; stipes ca. 1⁄3 the frond length, dark reddish brown, lustrous, terete, the rachises and rachillae deeply grooved and green-winged, glabrous; blades pentagonal, quadripinnate; pinnae 8–10 pairs, the basal pair exaggerated basiscopically; segments mostly 10–15 mm long, ca. 1 mm wide, terminal ones mostly 20–25 mm long; adaxial surface glabrous, slightly pebbly; abaxial surface glabrous; laminar margins recurved and well differentiated into 0.2–0.3 mm wide longdecurrent entire false indusia covering the abaxial laminar surfaces; vein ends visible but not in deep pits; spores brown.
A
Rhizomes compact, ascending, 2–3 mm diam.; rhizome scales linear-lanceolate, dark red-brown to black, lustrous, 4–5 mm long, entire; fronds to 38 cm long, clumped; stipes ca. 1⁄3 the frond length, dark reddish brown, lustrous, terete, the rachises and rachillae deeply grooved and green-winged, glabrous; blades pentagonal, quadripinnate; pinnae 8–10 pairs, the basal pair exaggerated basiscopically; segments mostly 10–15 mm long, ca. 1 mm wide, terminal ones mostly 20–25 mm long; adaxial surface glabrous, slightly pebbly; abaxial surface glabrous; laminar margins recurved and well differentiated into 0.2–0.3 mm wide longdecurrent entire false indusia covering the abaxial laminar surfaces; vein ends visible but not in deep pits; spores brown.
A
Ejemplar revisado
NL (Hinton et al. 23441, ANSM, TEX).A
Distribución
México (país) EndémicoA
Elevación
1950 – 2100 mA
Ecología y Hábitat
Steep slopes, base of boulders.A
Tipo de vegetación
Bosque de encinoA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
From C. hintoniorum, C. apiacea differs in having larger fronds (25–38 X 9–18 cm), broadly pentagonal blades, more dissected blades which are 4-pinnate at bases (vs. 3-pinnate), and longer segments (mostly 10–15 mm long, the longest ones 15–20 mm long, the terminal ones mostly 20–25 mm long). The indusia of C. apiacea are long-decurrent and more differentiated than those of C. hintoniorum, their margins are pebbly but not distinctly papillate, and vein endings lack the white farina found in C. pellaeopsis. In constrast to C. hintoniorum, the rhizome scales are black to dark red-brown, lustrous, entire, 4–5 X 0.3–0.5 mm at base, 10–12 cells wide (vs. black, bristle-like, 5–7 mm long, 3–4 cells wide at base), and the fronds have 8–10 pairs of pinnae (vs. 4–6 pairs).A