Anemia hirsuta (L.) Sw.
Descripción
Rhizomes horizontal, compact, short-creeping, 2–6 mm diam.; rhizome hairs orange; fronds erect, (6)12–32 cm long; stipes 1⁄3–2⁄3 the frond length, 0.5–0.9 mm diam., stramineous, hirsute; blades narrowly oblong, occasionally deltate, 1.8–5.6 cm wide, 1-pinnate, the proximal pinnae deeply incised with 1 to several segments, chartaceous; pinnae 6–10 pairs, opposite to subopposite, oblong, cuneate at bases, often excavate basiscopically, apices obtuse, margins minutely erose-denticulate, laminae hirsute; veins free; fertile pinnae approximate to the sterile pinnae, usually far surpassing the sterile blades in height; spores striate, ridges smooth, distant; 2n=152 (Col, Gro, Jal, Méx, Nay, Jam, Peru); 2n=76–86, 76–92, 88–98 (Oax); see below.A
Ejemplar revisado
Chis (Breedlove 26938, NY). Col (McVaugh 16077A, MICH). Gro (Rzedowski 26865, NY). Jal (McVaugh 19843, NY). Méx (Hinton 1640, NY). Mich (Hinton 15214, NY). Mor (Pringle 8792, NY). Nay (Feddema 698, MICH). Oax (Mickel 6263, NY). Pue (Sharp 45926, MEXU). Tam (Patterson 7300, TEX). Ver (Stoutamire 3611, NY).A
Elevación
40–2000 mA
Ecología y Hábitat
Open to mostly shaded grassy slopes and trail banks.A
Categoría IUCN
No incluidaC
Categoría NOM-059-SEMARNAT-2010
No incluidaD
Discusión taxonómica
Anemia hirsuta is one of the most common and widespread species in the genus. It hybridizes with several other species in Mexico, including A. affinis, A. jaliscana, A. karwinskyana, A. pastinacaria, A. phyllitidis, and A. tomentosa.
This species is extremely plastic in its morphology, ranging from small to large, pinnae nearly undivided to extremely lacerate, and blades ranging from narrowly oblong to deltate. Some of its variants are indistinguishable externally from some of the hybrids, such as A. hirsuta X jaliscana. Such hybrids can be distinguished by their abortive or larger spores and by their intermediate dissection within the same population. Anemia hirsuta has a genome in common with A. jaliscana (38II + 114I in the hybrids).
Mickel 6944 (NY) and Breedlove 37735 (DS, ENCB) have blades that are deeply dissected and exhibit significant spore malformation. Quite possibly there are different cytological races within A. hirsuta. Although most chromosome counts for A. hirsuta have been 2n=152, occasional counts deviate from the base of x=38 (see Mickel, 1982). The cause of these irregularities is not known, and further studies of A. hirsuta—morphological, cytological, and molecular—are needed not only in Mexico, but throughout this species’ range.A
This species is extremely plastic in its morphology, ranging from small to large, pinnae nearly undivided to extremely lacerate, and blades ranging from narrowly oblong to deltate. Some of its variants are indistinguishable externally from some of the hybrids, such as A. hirsuta X jaliscana. Such hybrids can be distinguished by their abortive or larger spores and by their intermediate dissection within the same population. Anemia hirsuta has a genome in common with A. jaliscana (38II + 114I in the hybrids).
Mickel 6944 (NY) and Breedlove 37735 (DS, ENCB) have blades that are deeply dissected and exhibit significant spore malformation. Quite possibly there are different cytological races within A. hirsuta. Although most chromosome counts for A. hirsuta have been 2n=152, occasional counts deviate from the base of x=38 (see Mickel, 1982). The cause of these irregularities is not known, and further studies of A. hirsuta—morphological, cytological, and molecular—are needed not only in Mexico, but throughout this species’ range.A