Amauropelta cheilanthoides (Kunze) Á.Löve & D.Löve
Descripción
Rhizomes erect, caudices (1–)2–4(–5) cm diam.; fronds mostly 60–150(–200) cm long, usually mucilaginous when coiled; stipes stramineous to tan, to 25 X 0.4–1 cm; blades subsucculent when living, chartaceous to subcoriaceous when dried, mostly 75–175 X 6–50 cm, with 2–5 pairs of abruptly reduced proximal pinnae, the lowermost glanduliform; pinnae (3–)10–25(–30) X (1–)1.5–3(–4) cm, incised to within 1(–3) mm of costae; aerophores prominent, tuberculiform or peg-like at pinna bases; segments with revolute margins, ca. 3–5 mm wide, proximal segments often elongate, the basiscopic one the longest and often dentate; veins (7–)10–18(–23) pairs per segment, usually immersed and darkened abaxially; indument abaxially usually of a few stiff septate hairs to 2(–2.5) mm long on rachises and costae, or sometimes glabrous or glabrescent, tissue between veins glabrous on both sides, or with sessile yellowish to orange glands; sori submarginal, often partially hidden by revolute margins, with indusia relatively large, persistent, often glandular on the margins; sporangia glabrous; 2n=58, 116 (Oax).A
Forma de vida
TerrestreA
Elevación
950 – 2700 mA
Tipo de vegetación
Bosque de pino-encino, Bosque de neblina/mesófiloA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
(In relation to the synonym Thelypteris cheilanthoides)
Key to the Mexican Varieties of Thelypteris cheilanthoides
Segments falcate, with strongly revolute margins; blades usually with septate hairs abaxially……………………………………………………...................var. cheilanthoides
Segments straight or subfalcate, with margins plane or slightly revolute; blades glabrous...........................……………………………………….......var. mucosa
Thelypteris cheilanthoides var. cheilanthoides (Kunze) Proctor, Bull. Inst. Jamaica, Sci. Ser. 5: 58. 1953
Phegopteris amplificata Fée, Mém. Foug., 8 Ic. Esp. Nouv.: 89. 1857
Aspidium kunzei Fée, Mém. Foug., 10. Ic. Esp. Nouv.: 37.1865
Differs from var. mucosa by the characters given in the key; 2n=58 (Oax).
Distribution. Wet pine-oak woods and seepage areas, especially along streams and roadside ditches; 950–2700 m. Mexico; Guat, Hond, CR, Pan; Jam, Hisp; Col, Ven, Ec, Peru, s Braz, Bol.
Selected Specimens Examined. Chis (Breedlove 32713, DS). Gro (Mexia 9001, GH, K, MICH, MO, NY, UC, US). Gto (Rzedowski 51229, IEB, UC). Hgo (Equipo 6, FCME). Jal (Mexia 1768, CAS, UC). Méx (Hinton 1392, GH, MEXU, NY). Mich (Hinton 15376, GH, LL, NY, US). Oax (Mickel 4223, MEXU, NY). Pue (Ventura A. 22170, CHAPA, UAMIZ, XAL). Ver (Lira 212, MEXU, UAMIZ).
Unverified, Doubtful, or Mistaken Reports. Tab (reported by Magaña, 1992, probably based on a misidentification).
This species is distinguished from others in Mexico by the persistent indusia, somewhat succulent blades with immersed veins, and a basiscopic segment of larger pinnae somewhat elongate. Variety cheilanthoides is further distinguished from var. mucosa by the revolute segment margins and septate hairs on rachises and costae abaxially.
Téllez 7867 (MEXU) is unusual in having pinnatifid segments.
Thelypteris cheilanthoides var. mucosa A.R.Sm., Amer. Fern J. 63(3): 123, f.4,5.1973
Amauropelta mucosa (A.R.Sm.) Á.Löve & D.Löve, Taxon 26: 325. 1977
Similar to var. cheilanthoides except: segments less falcate, with margins less revolute; indument completely absent on blades abaxially; 2n=116 (Oax).
Distribution. In wet woods; 1350–1900 m. Mexico.
Specimens Examined. Oax (Breedlove 59843, CAS; Mickel 4317, ENCB, MEXU, NY; Smith 463, UC). Pue (Arsène 1935, MEXU, US). Ver (Copeland herb. 31, BM, GH, MEXU, MICH, UC, US; Ventura A. 229, DS, ENCB, NY).A
Key to the Mexican Varieties of Thelypteris cheilanthoides
Segments falcate, with strongly revolute margins; blades usually with septate hairs abaxially……………………………………………………...................var. cheilanthoides
Segments straight or subfalcate, with margins plane or slightly revolute; blades glabrous...........................……………………………………….......var. mucosa
Thelypteris cheilanthoides var. cheilanthoides (Kunze) Proctor, Bull. Inst. Jamaica, Sci. Ser. 5: 58. 1953
Phegopteris amplificata Fée, Mém. Foug., 8 Ic. Esp. Nouv.: 89. 1857
Aspidium kunzei Fée, Mém. Foug., 10. Ic. Esp. Nouv.: 37.1865
Differs from var. mucosa by the characters given in the key; 2n=58 (Oax).
Distribution. Wet pine-oak woods and seepage areas, especially along streams and roadside ditches; 950–2700 m. Mexico; Guat, Hond, CR, Pan; Jam, Hisp; Col, Ven, Ec, Peru, s Braz, Bol.
Selected Specimens Examined. Chis (Breedlove 32713, DS). Gro (Mexia 9001, GH, K, MICH, MO, NY, UC, US). Gto (Rzedowski 51229, IEB, UC). Hgo (Equipo 6, FCME). Jal (Mexia 1768, CAS, UC). Méx (Hinton 1392, GH, MEXU, NY). Mich (Hinton 15376, GH, LL, NY, US). Oax (Mickel 4223, MEXU, NY). Pue (Ventura A. 22170, CHAPA, UAMIZ, XAL). Ver (Lira 212, MEXU, UAMIZ).
Unverified, Doubtful, or Mistaken Reports. Tab (reported by Magaña, 1992, probably based on a misidentification).
This species is distinguished from others in Mexico by the persistent indusia, somewhat succulent blades with immersed veins, and a basiscopic segment of larger pinnae somewhat elongate. Variety cheilanthoides is further distinguished from var. mucosa by the revolute segment margins and septate hairs on rachises and costae abaxially.
Téllez 7867 (MEXU) is unusual in having pinnatifid segments.
Thelypteris cheilanthoides var. mucosa A.R.Sm., Amer. Fern J. 63(3): 123, f.4,5.1973
Amauropelta mucosa (A.R.Sm.) Á.Löve & D.Löve, Taxon 26: 325. 1977
Similar to var. cheilanthoides except: segments less falcate, with margins less revolute; indument completely absent on blades abaxially; 2n=116 (Oax).
Distribution. In wet woods; 1350–1900 m. Mexico.
Specimens Examined. Oax (Breedlove 59843, CAS; Mickel 4317, ENCB, MEXU, NY; Smith 463, UC). Pue (Arsène 1935, MEXU, US). Ver (Copeland herb. 31, BM, GH, MEXU, MICH, UC, US; Ventura A. 229, DS, ENCB, NY).A