Woodsia mollis (Kaulf.) J.Sm.
Descripción
Rhizomes horizontal to ascending, compact; rhizome scales bicolorous, light brown with black central stripe, lanceolate, ciliate; fronds (12–)20–45(–68) cm, clumped; stipes 2–8 cm long, 1⁄8–1⁄4 the frond length, stramineous, with scattered scales and catenate hairs; blades 9–20(–60) X 2–7 cm, linear-elliptic, pinnate-pinnatifid, proximal pinnae greatly reduced; rachises stramineous with scattered to dense, catenate hairs, 0.5–1 mm long; pinnae (12–)20–50 pairs, narrowly deltate, the lobes obtuse, margins entire to ciliate, with catenate, lax, white hairs on both surfaces 1–1.5 mm long, and short, spreading, golden, glandular hairs 0.5 mm long present or absent; sori submarginal, 2–3 pairs per ultimate segment; indusia (0.8–)1 mm diam., cup-like, globose or dissected into several plates with lacerate margins, glabrous to glandular; sporangia 32-spored; spores 51–70 µm.A
Forma de vida
TerrestreA
Ejemplar revisado
Ags (Siqueiros D. 4198, IEB). Chih (Knobloch 1882, MSC). Chis (Matuda 2447, NY). Col (McVaugh 16109, MICH). DF (Orcutt 3621, NY). Dgo (Gentry & Argüelles 18165, NY). Gro (Keil & Canne 9110, NY). Gto (Duges s.n., in 1880, NY). Hgo (Ventura A. 1613, NY). Jal (McVaugh 13484, NY). Méx (Hinton 1256, NY). Mich (Leavenworth 714, NY). Mor (Rose & Painter 6874, NY). Nay (Feddema 260, NY). NL (Hinton et al. 22151, NY, TEX). Oax (Mickel 6015, NY). Pue (Purpus 6445, NY). Qro (Fernández N. 4156, NY). Sin (Gentry 6499, NY). Tlax (Weber 729, MICH). Ver (Ventura A. 64, ARIZ, MICH). Zac (Rzedowski & McVaugh 948A, MICH).
Unverified, Doubtful, or Mistaken Reports. SLP (Schaffner 957, GH, cited by Brown, 1964, but not verified).
Variant Specimens Examined
Orange glands. Col (McVaugh 16109, MEXU). Gro (Lorea 852, MEXU). NL (Favela Lara s.n., 12 Nov 1981, UNL, s.n., 27 Jun 1982). Sin (Breedlove 18540, NY). Ver (Seaton 280, GH). Open indusia. Mor (Riba 1921, MEXU; Valdes et al. 87, UAMIZ). Qro (Zamudio & Pérez 7463, MEXU). Ver (Müller 6, NY; Riba & Pérez 1005, UAM-1). Woolly. DF (Pringle 15020, PH). Méx (Dziekanowski et al. 3077, NY; Fisher 35409, NY; Hinton et al. 13356, NY; Mickel 675, NY; Purpus 1607, NY). Oax (Mickel 7435, NY).
A
Unverified, Doubtful, or Mistaken Reports. SLP (Schaffner 957, GH, cited by Brown, 1964, but not verified).
Variant Specimens Examined
Orange glands. Col (McVaugh 16109, MEXU). Gro (Lorea 852, MEXU). NL (Favela Lara s.n., 12 Nov 1981, UNL, s.n., 27 Jun 1982). Sin (Breedlove 18540, NY). Ver (Seaton 280, GH). Open indusia. Mor (Riba 1921, MEXU; Valdes et al. 87, UAMIZ). Qro (Zamudio & Pérez 7463, MEXU). Ver (Müller 6, NY; Riba & Pérez 1005, UAM-1). Woolly. DF (Pringle 15020, PH). Méx (Dziekanowski et al. 3077, NY; Fisher 35409, NY; Hinton et al. 13356, NY; Mickel 675, NY; Purpus 1607, NY). Oax (Mickel 7435, NY).
A
Elevación
800 – 3100 mA
Ecología y Hábitat
On mesic, lightly wooded rocky slopes.A
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Woodsia mollis is the most widespread member of the genus in Mexico; other species are mostly limited to the northern and western states.
The Mexican woodsias are in great need of biosystematic study, especially the W. mollis complex involving W. montevidensis (Spreng.) Hieron. of Hispaniola, South America, and South Africa. Mexican material of Woodsia mollis is fairly consistent in general aspect and rhizome scales but varies greatly in indusial dissection, and quantity and quality of indument. The nature of the indusium is one of the major characters used in defining species in Woodsia, but Mexican material of W. mollis has indusia varying from commonly globose and sac-like (most commonly) to deeply divided into plates, as well as numerous intermediates. Small glands may be present among the catenate hairs, or hairs may be totally absent on the pinnae. The glandular morphotype does not appear to be correlated with geography. The abundance of catenate hairs varies widely, and a very woolly condition is found at high elevations in the state of México, Distrito Federal, and rarely Oaxaca. Segment margins also vary from slightly to strongly recurved and distinctly differentiated, the latter a variant considered here as distinct (see W. canescens). There may be a series of species and hybrids (fertile and sterile) involved here, or these may all be expressions of a single, highly variable species, the oldest name being W. montevidensis. Material of W. montevidensis in South America has relatively few laminar hairs (mostly on segment midveins) and open sori, only rarely showing sac-like indusia. A few specimens of W. mollis from scattered localities in Mexico, Guatemala, and El Salvador have mostly open sori and few hairs. The figure of W. guatemalensis (Hooker, Sp. Fil. 1: t. 21A. 1846) shows this condition.
Most specimens have large spores, 51–70 µm diam. One specimen with virtually no hairs and open indusia (Müller 6, NY) has spores more in the range of a diploid (33–51 µm; avg. 40.5 µm). This may represent W. montevidensis, but other specimens with open indusia are disjunct in the country. More work is needed on this difficult complex.
A
The Mexican woodsias are in great need of biosystematic study, especially the W. mollis complex involving W. montevidensis (Spreng.) Hieron. of Hispaniola, South America, and South Africa. Mexican material of Woodsia mollis is fairly consistent in general aspect and rhizome scales but varies greatly in indusial dissection, and quantity and quality of indument. The nature of the indusium is one of the major characters used in defining species in Woodsia, but Mexican material of W. mollis has indusia varying from commonly globose and sac-like (most commonly) to deeply divided into plates, as well as numerous intermediates. Small glands may be present among the catenate hairs, or hairs may be totally absent on the pinnae. The glandular morphotype does not appear to be correlated with geography. The abundance of catenate hairs varies widely, and a very woolly condition is found at high elevations in the state of México, Distrito Federal, and rarely Oaxaca. Segment margins also vary from slightly to strongly recurved and distinctly differentiated, the latter a variant considered here as distinct (see W. canescens). There may be a series of species and hybrids (fertile and sterile) involved here, or these may all be expressions of a single, highly variable species, the oldest name being W. montevidensis. Material of W. montevidensis in South America has relatively few laminar hairs (mostly on segment midveins) and open sori, only rarely showing sac-like indusia. A few specimens of W. mollis from scattered localities in Mexico, Guatemala, and El Salvador have mostly open sori and few hairs. The figure of W. guatemalensis (Hooker, Sp. Fil. 1: t. 21A. 1846) shows this condition.
Most specimens have large spores, 51–70 µm diam. One specimen with virtually no hairs and open indusia (Müller 6, NY) has spores more in the range of a diploid (33–51 µm; avg. 40.5 µm). This may represent W. montevidensis, but other specimens with open indusia are disjunct in the country. More work is needed on this difficult complex.
A