Notholaena lemmonii D.C.Eaton
Descripción
Rhizomes compact, horizontal, 1.5–2.5 mm diam.; rhizome scales linear-lanceolate, bicolorous, dark brown to black with very narrow tan margins, weakly ciliolate, lustrous, apices flexuous, hair-like; fronds 16–35 cm long, clumped; stipes ca. 1⁄3 the frond length, shallowly grooved, lustrous, reddish brown to black, with a few cordate lance-ovate scales proximally; blades linear to narrowly oblong, 1.3–5 cm wide; rachises grooved, pinnate-pinnatifid to bipinnate, subcoriaceous; pinnae 10–17 pairs, deltate to lanceolate, short-stalked (1 mm), proximal ones somewhat reduced; segments linear to oblong, broadly adnate; adaxial surfaces glabrous; abaxial surfaces densely white- to pale yellow-farinose; laminar margins curved; sporangia 64-spored; spores tan to dark brown. 2n=60 (USA).A
Forma de vida
Epipétrica.A
Distribución
México (país) Nativo y no endémicoA
Elevación
75 – 1450 mA
Ecología y Hábitat
On rocky slopes.A
Tipo de vegetación
Selva bajaA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Notholaenea lemmonii is distinct from N. grayi by its lack of scales on the fronds. It is similar to Notholaena meridionalis except that it has grooved stipes and rachises.
Key to the Mexican Varieties of Notholaena lemmonii
Mature stipes and rachises dark castaneous to black; rhizome scales 2 mm long or more; BCS to Jal………………….. var. lemmonii
Mature stipes and rachises light brown to brown; rhizome scales ca. 1 mm long; Gro, Méx, Mich, Oax, Pue.................var. australis
Notholaena lemmonii var. lemmonii D.C.Eaton, Bull. Torrey Bot. Club 7(6): 63. 1880
Differing from var. australis by its frond axes dark castaneous to black, larger rhizome scales, and more northern distribution; 2n=60 (USA).
Distribution. Epipetric on granitic hillsides, in rock crevices, on steep seepy slopes, with leguminous shrubs in thorn forests, and in tropical deciduous forests; 75–1450 m. USA; Mexico.
Selected Specimens Examined. BCS (Brandegee 659, NY; Jones 24564, NY; Pray 1779, NY; Wiggins 5465, MICH, NY). Chih (Knobloch 1340, MSC; Palmer 453, NY, US). Jal (Palmer 701, NY p.p.). Sin (Keil & Canne 8766, NY). Son (Palmer 266, NY; Wiggins & Rollins 303, NY).
Notholaena lemmonii var. australis R.M.Tryon, Contr. Gray Herb. 179: 62. 1956 Type. Mexico. Puebla: Coxcatlán, Purpus 4178 (US Holotipo).
Differing from var. lemmonii by its light brown to brown frond axes, smaller rhizome scales, and more southern distribution.
Distribution. Epipetric on open, rocky slopes; 900 m. Mexico.
Specimens Examined. Gro (Campos R. 932, MEXU, NY). Méx (Tejero-Díez 3064, IZTA). Mich (McVaugh 17984, MICH). Oax (Hitchcock s.n., 14 Aug 1910, US; Mickel 844, ISC, US; Rose 10093, US). Pue (Guízar 1373, MEXU; Smith et al. 3718, US).
The rhizome scales have pale, weak, easily detached hairs on the margins. The typical variety has only slightly longer rhizome scales and black to dark castaneous stipes.
A
Key to the Mexican Varieties of Notholaena lemmonii
Mature stipes and rachises dark castaneous to black; rhizome scales 2 mm long or more; BCS to Jal………………….. var. lemmonii
Mature stipes and rachises light brown to brown; rhizome scales ca. 1 mm long; Gro, Méx, Mich, Oax, Pue.................var. australis
Notholaena lemmonii var. lemmonii D.C.Eaton, Bull. Torrey Bot. Club 7(6): 63. 1880
Differing from var. australis by its frond axes dark castaneous to black, larger rhizome scales, and more northern distribution; 2n=60 (USA).
Distribution. Epipetric on granitic hillsides, in rock crevices, on steep seepy slopes, with leguminous shrubs in thorn forests, and in tropical deciduous forests; 75–1450 m. USA; Mexico.
Selected Specimens Examined. BCS (Brandegee 659, NY; Jones 24564, NY; Pray 1779, NY; Wiggins 5465, MICH, NY). Chih (Knobloch 1340, MSC; Palmer 453, NY, US). Jal (Palmer 701, NY p.p.). Sin (Keil & Canne 8766, NY). Son (Palmer 266, NY; Wiggins & Rollins 303, NY).
Notholaena lemmonii var. australis R.M.Tryon, Contr. Gray Herb. 179: 62. 1956 Type. Mexico. Puebla: Coxcatlán, Purpus 4178 (US Holotipo).
Differing from var. lemmonii by its light brown to brown frond axes, smaller rhizome scales, and more southern distribution.
Distribution. Epipetric on open, rocky slopes; 900 m. Mexico.
Specimens Examined. Gro (Campos R. 932, MEXU, NY). Méx (Tejero-Díez 3064, IZTA). Mich (McVaugh 17984, MICH). Oax (Hitchcock s.n., 14 Aug 1910, US; Mickel 844, ISC, US; Rose 10093, US). Pue (Guízar 1373, MEXU; Smith et al. 3718, US).
The rhizome scales have pale, weak, easily detached hairs on the margins. The typical variety has only slightly longer rhizome scales and black to dark castaneous stipes.
A