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FOC | Family List | FOC Vol. 2-3 | Hymenophyllaceae | Abrodictyum

3. Abrodictyum obscurum (Blume) Ebihara & K. Iwatsuki, Blumea. 51: 244. 2006.

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Plants 8-30 cm tall. Rhizome suberect or creeping, 2-3 mm in diam., densely covered with brown or reddish brown hairs, with several fronds in a tuft. Stipe dark or light brown, columnar, 3-12 cm, ca. 1 mm in diam., stiff, usually with grooves, with sparse multicellular hairs at base, wingless. Lamina tripinnate to quadripinnatifid, triangular-ovate or ovate-lanceolate, 4-14 × 2-6 cm, herbaceous; pinnae 6-14 mm apart, oblong-lanceolate or oblong-ovate, 1-3 cm × 8-12 mm, base cuneate, apex obtuse or acuminate, upper pinnae alternate, basal ones subopposite, sessile or with short stalks, spreading; pinnules oblong to oblong-lanceolate or ovate, 3-4 mm, base decurrent or cuneate, apex acute or rounded. Veins pinnate, brown, obviously raised on each surface. Sori apical on short acroscopic segments; involucres cylindric, narrowly winged, with non-dilated or slightly dilated mouth; receptacles projecting. 2n = 66.

On wet rocks, near streams in dense forests. Guangdong, Guangxi, Hainan, Taiwan, Yunnan [S India, Indonesia (Borneo), Japan, Malaysia, New Guinea, Philippines, Sri Lanka, Thailand, Vietnam].

1 Rhizome suberect; stipe dark brown, 3-12 cm; lamina 6-14 cm, tripinnate to quadripinnatifid; pinnae 2-3 cm; pinnules acute at apex.   3a var. obscurum
+ Rhizome creeping; stipe light brown, 4-6 cm; lamina 4-6 cm, tripinnatifid; pinnae 1-2 cm; pinnules rounded at apex.   3b var. siamense

Lower Taxa


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