The World Flora Online

Wet lowland forests, along streams and on limestone rocks; 200–1200 m. Mexico; Guat, Bel (Sundue 301, NY), Hond. Wet lowland forests; Juchitán; 250 m. Mexico (Ver, Oax, Chis); Guat, Hond. Wet lowland forests; Juchitán; 250 m. Mexico (Ver, Oax, Chis); Guat, Hond.

Rhizomes creeping to suberect, ca. 1 cm diam., with rhizome scales few, tan, 3–5 mm long, glabrous; fronds monomorphic or subdimorphic, the fertile longer and more erect, 40–70 cm long; stipes about as long as blades, stramineous, stellate-hairy; blades herbaceous, pustulate abaxially, pinnate-pinnatifid, 20–35 x 12– 20 cm, lanceolate to ovate-lanceolate, gradually reduced toward the pinnatifid apices; pinnae 15–19 pairs, sessile, 2–3 proximal pairs deflexed, these the largest, 8–12 x 1.4–3 cm, pinnatifid ca. 0.7 the way to costae, one or more distal pinnae viviparous at bases; segments oblique, subfalcate, 2–4 mm wide, acutish at apices; veins 10–13 pairs, proximal pair from adjacent segments running to sinuses or nearly so, but not connivent; indument abaxially of mostly simple (a few stellate) hairs ca. 0.1 mm long on rachises, costae, and costules, tissue between veins glabrous on both sides; sori medial, with indusia small, tan, ciliolate, persistent; sporangia glabrous. Rhizome creeping to suberect, ca. 1 cm diam.; rhizome scales few, 3-5 mm long, tan, glabrous; fronds subfasciculate, 40-70 cm long; stipe about as long as blade, stramineous, stellate-hairy; lamina pinnate-pinnatifid, 20-35 cm long, 12-20 cm wide, lanceolate to ovate-lanceolate, gradually reduced toward the pinnatifid apex; pinnae 15-19 pairs, sessile, 2-3 lowermost pairs deflexed, these the largest, 8-12 cm long, 1.4-3 cm wide, pinnatifid ca. 0.7 to costae, one or more upper pinnae viviparous at base; ultimate segments oblique, subfalcate, 4-5 mm between costules, acutish at apex; veins 10-13 pairs, basal pair running out nearly or quite to sinus, but not con-nivent; costae and costules puberulous below, hairs mostly simple (a few stellate), ca. 0.1 mm long; leaf tissue herbaceous, verruculose throughout, glabrous; sori medial; indusia small, tan, ciliolate, persistent; sporangia glabrous. Rhizome creeping to suberect, ca. 1 cm diam.; rhizome scales few, 3-5 mm long, tan, glabrous; fronds subfasciculate, 40-70 cm long; stipe about as long as blade, stramineous, stellate-hairy; lamina pinnate-pinnatifid, 20-35 cm long, 12-20 cm wide, lanceolate to ovate-lanceolate, gradually reduced toward the pinnatifid apex; pinnae 15-19 pairs, sessile, 2-3 lowermost pairs deflexed, these the largest, 8-12 cm long, 1.4-3 cm wide, pinnatifid ca. 0.7 to costae, one or more upper pinnae viviparous at base; ultimate segments oblique, subfalcate, 4-5 mm between costules, acutish at apex; veins 10-13 pairs, basal pair running out nearly or quite to sinus, but not con-nivent; costae and costules puberulous below, hairs mostly simple (a few stellate), ca. 0.1 mm long; leaf tissue herbaceous, verruculose throughout, glabrous; sori medial; indusia small, tan, ciliolate, persistent; sporangia glabrous.

105. Thelypteris resiliens (Maxon) A.R. Sm., Amer. Fern J. 63: 121 (1973).

Por A.R. Smith.

Dryopteris resiliens Maxon, Field Mus. Nat. Hist., Bot. Ser. 17: 302 (1938). Holotipo: Honduras, Standley 52893 (US!).

Rizoma rastrero o suberecto; hojas 40-70 cm; pecíolo 20-35 cm; lámina 20-35 cm, reducida gradualmente hacia el ápice confluente, pinnatífido; yema(s) en la axila de una(s) pinna(s) distal(es); pinnas 15-19 pares, 6-14 x 1.4-3 cm, sésiles, los 2-3 pares proximales deflexos, incisas 2/3-3/4 de su ancho; segmentos 4-5 mm de ancho, oblicuos, subfalcados, agudos; nervaduras 10-13 pares, el par proximal de los segmentos adyacentes dirigiéndose hacia el seno; indumento del envés en su mayoría de tricomas c. 0.1 mm, aciculares, sobre el raquis y las costas, el tejido laminar glabro en ambas superficies, verrugoso; soros indusiados; indusio pequeño, pardo pálido, ciliolado; esporangios glabros. Bosques húmedos montanos y selvas altas perennifolias, especialmente a lo largo de riachuelos y sobre rocas calizas. T (Cowan 2905, CAS); Ch (Croat 40563, UC); G (Steyermark 39159, F); H (Steeves y Ray 390, UC). 0-1200 m. (S. México, Mesoamérica.)