Anemia mexicana Klotzsch
Descripción
Rhizomes horizontal, creeping, ca. 2 mm diam.; rhizome hairs stiff, dark brown; fronds erect, (15–)30–60 cm long; stipes ca. 1⁄2 the frond length, ca. 1 mm diam., stramineous, glabrate; blades deltate-lanceolate, 1-pinnate, 9–18 cm wide, subcoriaceous; pinnae 5–9 pairs, lanceolate-deltate to narrowly deltate to rounded or cuneate at bases, often slightly excavate basiscopically, apices acuminate, margins minutely serrulate; veins free; blade surfaces hirsute with minute white hairs abaxially, adaxially glabrous, green or bluish green and iridescent; fertile pinnae remote from the sterile pinnae, surpassing or occasionally equal to the sterile blades; spores striate, ridges smooth, close.A
Elevación
70 – 1900 mA
Ecología y Hábitat
Lightly shaded limestone outcrops.A
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Key to the Mexican Varieties of Anemia mexicana
Pinnae lanceolate-deltate, 1.8–3 cm wide; pinna bases truncate, green adaxially; n., c. and e. Mexico....................................................................................................... var. mexicana
Pinnae narrowly deltate, 1–1.7 cm wide; pinna bases cuneate to rounded or truncate; blue-green adaxially................................................................................................var. makrinii
Anemia mexicana var. mexicana, Linnaea 18(5): 526. 1845
Distinct by its pinnae lanceolate-deltate, 1.8–3 cm wide; pinna bases truncate, green above; 2n=76 (SLP).
Distribution. Lightly shaded limestone outcrops; 70–1900 m. USA (Tex); Mexico.
Selected Specimens Examined. Coah (Wynd & Mueller 229, NY). Gro (Orcutt 4165, DS). Gto (Ventura & López 7728, IEB, MEXU). Hgo (Clark 6891, NY). Méx (Matuda 37304, MEXU). Mor (Pringle 8695, NY). NL (Pringle 1976, NY). Qro (Rzedowski 27777, NY). SLP (King 3913, NY). Tam (Mickel 579, NY). Ver (Duran E. et al. 279, MEXU).
Unverified or Mistaken Reports. Tab (reported by Magaña, 1992, as var. makrinii, but from the photo and range it appears to be var. mexicana). Guerrero material is mostly intermediate between the two varieties.
Anemia mexicana var. makrinii (Maxon) Mickel in Brittonia 33: 421. 1981
Anemia makrinii Maxon, J. Wash. Acad. Sci. 8: 199. 1918
Distinct by its narrowly deltate pinnae, 1–1.7 cm wide; pinna bases cuneate to rounded or truncate; laminae blue-green adaxially; 2n=76 (Col).
Distribution. Rare on lightly shaded limestone outcrops at lower elevations near Pacific Coast; 400–1100 m. Mexico.
Specimens Examined. Col (McVaugh 18059, NY). Gro (McVaugh 22168, MICH). Mich (Guerrero C. 1230, XAL; Koch & Fryxell 83243, NY). Oax (Makrinius 51, GH, NY).
Unverified, Doubtful, or Mistaken Reports. Tab (reported by Magaña, 1992, but is probably var. mexicana). Bel (Davidse & Brandt 32127, MO, cited by Moran & Mickel in Davidse et al., 1995, is A.
speciosa).
Var. makrinii is distinct from var. mexicana, which is found more to the north and east, by having pinnae that are narrower, cuneate at bases rather than truncate, and iridescent bluish green adaxially. Both varieties are diploid and both cross with A. adiantifolia (var. makrinii in Colima, var. mexicana in San Luis Potosí) with the hybrids having 78I in meiosis.A
Pinnae lanceolate-deltate, 1.8–3 cm wide; pinna bases truncate, green adaxially; n., c. and e. Mexico....................................................................................................... var. mexicana
Pinnae narrowly deltate, 1–1.7 cm wide; pinna bases cuneate to rounded or truncate; blue-green adaxially................................................................................................var. makrinii
Anemia mexicana var. mexicana, Linnaea 18(5): 526. 1845
Distinct by its pinnae lanceolate-deltate, 1.8–3 cm wide; pinna bases truncate, green above; 2n=76 (SLP).
Distribution. Lightly shaded limestone outcrops; 70–1900 m. USA (Tex); Mexico.
Selected Specimens Examined. Coah (Wynd & Mueller 229, NY). Gro (Orcutt 4165, DS). Gto (Ventura & López 7728, IEB, MEXU). Hgo (Clark 6891, NY). Méx (Matuda 37304, MEXU). Mor (Pringle 8695, NY). NL (Pringle 1976, NY). Qro (Rzedowski 27777, NY). SLP (King 3913, NY). Tam (Mickel 579, NY). Ver (Duran E. et al. 279, MEXU).
Unverified or Mistaken Reports. Tab (reported by Magaña, 1992, as var. makrinii, but from the photo and range it appears to be var. mexicana). Guerrero material is mostly intermediate between the two varieties.
Anemia mexicana var. makrinii (Maxon) Mickel in Brittonia 33: 421. 1981
Anemia makrinii Maxon, J. Wash. Acad. Sci. 8: 199. 1918
Distinct by its narrowly deltate pinnae, 1–1.7 cm wide; pinna bases cuneate to rounded or truncate; laminae blue-green adaxially; 2n=76 (Col).
Distribution. Rare on lightly shaded limestone outcrops at lower elevations near Pacific Coast; 400–1100 m. Mexico.
Specimens Examined. Col (McVaugh 18059, NY). Gro (McVaugh 22168, MICH). Mich (Guerrero C. 1230, XAL; Koch & Fryxell 83243, NY). Oax (Makrinius 51, GH, NY).
Unverified, Doubtful, or Mistaken Reports. Tab (reported by Magaña, 1992, but is probably var. mexicana). Bel (Davidse & Brandt 32127, MO, cited by Moran & Mickel in Davidse et al., 1995, is A.
speciosa).
Var. makrinii is distinct from var. mexicana, which is found more to the north and east, by having pinnae that are narrower, cuneate at bases rather than truncate, and iridescent bluish green adaxially. Both varieties are diploid and both cross with A. adiantifolia (var. makrinii in Colima, var. mexicana in San Luis Potosí) with the hybrids having 78I in meiosis.A