Anemia adiantifolia (L.) Sw.
Descripción
Rhizomes horizontal, creeping, ca. 2 mm diam.; rhizome hairs dark brown; fronds erect, 13–60 cm long, 1–20 mm apart; stipes 1⁄2–2⁄3 the frond length, 1–1.4 mm diam., stramineous to castaneous, hirsute to glabrous; blades deltate, 3-pinnate, 9–24 cm wide, coriaceous; pinnae 12–18 pairs, alternate to subopposite, segments oblanceolate, bases cuneate, apices obtuse, margins minutely denticulate, pilose with stiff white hairs; veins free; fertile pinnae remote from the sterile pinnae, usually shorter than the sterile blade; spores striate, ridges smooth; 2n=76, 152+ sterile triploid (Jam); 2n=76 (Col, SLP, Jam).A
Ejemplar revisado
Camp (Martínez S. 3017, MEXU). Chis (Stoutamire 3616, NY). Col (Mickel 1354, NY). Gro (Hinton 7258, NY). Hgo (Espinosa S. 222, MEXU). Jal (Mendoza 3685, MEXU). Méx(Tejero-Díez 2824, IZTA). Mich (Hinton 15909, NY). Mor (Pringle s.n., 29 Oct 1903, CAS, but at US is adiantifolia X mexicana var. mexicana; Lyonnet 1287, US). NL (Pringle 1977, NY). Oax (Conzatti 3791, NY). Pue (Tenorio L. 14062, MEXU). Qro (Servín 1233, IEB). QR (Cabrera 313, NY). SLP (Haynes 5675, NY). Tab (Cowan 3452, NY). Tam (Chase 7572, NY). Ver (Purpus 2848, NY). Yuc (Gaumer 372, NY).A
Elevación
80–1720 mA
Ecología y Hábitat
Open to lightly shaded, rocky slopes, usually on limestone or calcareous soils, in mesic regions.A
Categoría IUCN
No incluidaC
Categoría NOM-059-SEMARNAT-2010
No incluidaD
Discusión taxonómica
This species and other members of subg. Anemiorrhiza in Mexico (A. cicutaria, A. colimensis, A. mexicana, and A. speciosa) are confined to calcareous rocks and soils. Anemia adiantifolia seems to be diploid in Mexico, but Walker (1962) found 2n, 3n, and 4n plants in Jamaica. In light of the varied numbers in several species of Anemia, other ploidy levels of A. adiantifolia might be expected in Mexico. This is one of the more common species of Anemia in Mexico. It is characterized by its fine dissection and coarse texture. It hybridizes with both varieties of A. mexicana: Anemia adiantifolia X mexicana var. mexicana (Fig. 15F) in Morelos, Nuevo León, Tamaulipas, and San Luis Potosí; 2n=152 univalents (SLP); Anemia adiantifolia X mexicana var. makrinii (Fig. 15E) in Colima; n=76 univalents (Col). Anemia adiantifolia has also been found growing with A. colimensis (also subg. Anemiorrhiza), but no hybrids with that species have been found.A