Dryopteris cinnamomea (Cav.) C.Chr.
Descripción
Rhizomes short-creeping to suberect; rhizome scales pale brown to reddish brown, concolorous or with darkened bases at the point of attachment (rarely with a darker central stripe), often lustrous, mostly 10–18 X 1–3 mm, lanceolate to ovatelanceolate, sometimes with long twisted tips, entire to subentire; fronds 15–75 cm long; stipes stramineous to pinkish to reddish brown, 4–27 cm long, 1⁄4–1⁄2 the frond length, bases scaly, scales mostly 5–18 mm long, with acuminate tips, sometimes also a few scattered scales distally, often densely glandular throughout; blades herbaceous to thin-chartaceous, green to yellow-green, ovate to deltate-lanceolate, 2–3-pinnate-pinnatifid at bases, otherwise mostly 2-pinnate-pinnatifid, 14–30(–50) X (7–)9–20(–30) cm, with pinnae mostly alternate, ascending 45–60° from the rachises, 5–20 pairs; rachises stramineous, scales absent or nearly so, densely glandular; proximal pinnae (2.5–)4–20 X (2–)4–10 cm, often slightly shorter than second pinna pair, equilateral or slightly more developed basiscopically than acroscopically; distal pinnae sessile or stalked to 4 mm, equilateral to more developed acroscopically, (3.5–)6–10(–18) X 2–7 cm, pinnules toothed; indument abaxially of stipitate glands on costae, costules, veins, and laminae between veins, scales none, adaxially the surfaces often stipitate-glandular, sometimes subglabrous; sori submarginal, indusia grayish to tan, 0.8–1.5 mm diam., flat or slightly vaulted, glandular.A
Forma de vida
o epipétrica. TerrestreA
Ejemplar revisado
Ags (McVaugh & Koelz 214, CAS, IEB, MEXU, NY). Chih (Correll & Gentry 23002, LL, UC). Coah (Johnston et al. 11983B, LL p.p.). Col (Goldsmith 32, US). DF (Pringle 11773, ARIZ, LL, UC, US). Dgo (Breedlove 59129, CAS, NY). Gro (Lorea 3131, FCME, IEB, NY). Gto (Díaz B. & Pérez 7385, IEB, UC). Hgo (Pringle 13815, ARIZ, ASU, CAS, LL, UC, US). Jal (Machuca N. 6368, IEB, UC). Méx (Purpus 1606, NY, UC). Mich (Díaz B. 7422, IEB, UC). Mor (Fisher 35423, MO, NY). Nay (Flores F. 2203, MEXU). Oax (Frame 309, NY, UC). Pue (Purpus 4022, ARIZ, UC, US). Qro (Rzedowski 44507, 51106, IEB, UC). SLP (Rzedowski 11387, NY). Tlax (Sharp & Hernández X. 44467, US). Ver (Ventura A. 10749, ASU). Zac (Rzedowski & Mc-Vaugh 953, ASU, ENCB).A
Elevación
1000 – 3100 mA
Ecología y Hábitat
(Rocky ledges) in light shade.A
Tipo de vegetación
Bosque de neblina/mesófiloA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Dryopteris cinnamomea is extremely variable and widely distributed in Mexico, but unknown or at least uncertain beyond Mexico. It is distinguished from other members of the D. patula complex by its long (10–18 mm) rhizome apex and stipe base scales with entire or slightly denticulate margins and acute apices, usually smaller frond size, thin-chartaceous blades, stramineous or reddish brown stipes, and glandular laminar surfaces (both sides). However, a significant number of specimens, especially those from western Mexico (Oaxaca to Colima) are eglandular or sparsely glandular adaxially. Indusia are often distinctly grayish (but sometimes tan), and the blades are thinner and more membranaceous than other Mexican Dryopteris. Another rather similar species is D. knoblochii (q.v.). Most collections identified as D. cinnamomea from northwestern Mexico have proven to be either D. rossii, which differs in having smaller, black-tipped stipe base scales, or D. knoblochii, which has a thicker blade texture, strongly inequilateral distal pinnae, and smaller indusia. Occasional mixed collections of D. cinnamomea and D. rossii have been seen, e.g., Zúñiga G. 18288 (UC), from Michoacán.
Mickel and Beitel (1988) distinguished D. rosea from D. cinnamomea by the former having reddish brown stipes, smaller stipe base scales, and glabrous laminae adaxially. While these differences generally seem to hold, many specimens of D. cinnamomea, with glandular laminae adaxially, have reddish brown stipes typical of D. rosea, e.g., Cervantes C. 35 (IEB), from Edo. México, and Mickel 3865 (NY), from Oaxaca. Most specimens from Chiapas annotated by Mickel and Beitel as D. rosea, e.g., Purpus 6725, 6725, Matuda 2452, all NY, are rather typical D. patula.
Specimens from the Valle de México and Edo. Hidalgo are often larger and more finely dissected than specimens elsewhere in the range. The epithet “athyrioides” has aptly been applied to them. Some specimens from Guerrero have somewhat bicolorous stipe base scales, nearly black in a central band, lighter brown along the margins, and the scales are narrower than specimens from elsewhere. These are D. rosea, as the name was applied by Mickel and Beitel (1988).
Putative hybrids involving D. cinnamomea and having malformed spores are the following: Rzedowski 45740 (ENCB), from Querétero; and King & Soderstrom 5202 (US), from Michoacán.
A
Mickel and Beitel (1988) distinguished D. rosea from D. cinnamomea by the former having reddish brown stipes, smaller stipe base scales, and glabrous laminae adaxially. While these differences generally seem to hold, many specimens of D. cinnamomea, with glandular laminae adaxially, have reddish brown stipes typical of D. rosea, e.g., Cervantes C. 35 (IEB), from Edo. México, and Mickel 3865 (NY), from Oaxaca. Most specimens from Chiapas annotated by Mickel and Beitel as D. rosea, e.g., Purpus 6725, 6725, Matuda 2452, all NY, are rather typical D. patula.
Specimens from the Valle de México and Edo. Hidalgo are often larger and more finely dissected than specimens elsewhere in the range. The epithet “athyrioides” has aptly been applied to them. Some specimens from Guerrero have somewhat bicolorous stipe base scales, nearly black in a central band, lighter brown along the margins, and the scales are narrower than specimens from elsewhere. These are D. rosea, as the name was applied by Mickel and Beitel (1988).
Putative hybrids involving D. cinnamomea and having malformed spores are the following: Rzedowski 45740 (ENCB), from Querétero; and King & Soderstrom 5202 (US), from Michoacán.
A