Hymenasplenium obscurum (Blume) Tagawa

Species

Pteridophytes > Polypodiales > Aspleniaceae > Hymenasplenium

Characteristics

Plants 20-40 cm tall. Rhizome long creeping, 3-4.5 mm in diam., apex scaly; scales dark brown, narrowly triangular to triangular. Fronds remote, up to 10 mm apart, grayish green when dry, papery to herbaceous, subglabrous; stipe dull green to grayish green when dry, not shiny or purple, 20(-25) cm, sparsely scaly to subglabrous; lamina 1-pinnate, narrowly ovate-triangular, 20-30 × 5-10 cm, base truncate, apex acuminate to caudate; rachis grayish green, subglabrous; pinnae 20-30 pairs, sessile to obscurely stalked, trapeziform-falcate, middle pinnae 3.5-7 × 0.8-1.3 cm, dimidiate, apex obtuse to subacute, base asymmetrical, acroscopic side truncate and parallel to rachis, basiscopic side of basal pinnae excavate, in middle pinnae narrowly cuneate and entire, acroscopic margin serrate to crenate, teeth not retuse, pinnae spreading to ascending. Veins distinct, forking and free, ending below a marginal tooth, basiscopic side with (3 or)4(or 5) veins lacking. Sori medial, linear, 3-5 mm; indusia persistent, pale brown, semi-elliptic to linear, membranous, entire, opening toward costa.
Life form -
Growth form herb
Growth support free-standing
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Mature height (meter) 0.2 - 0.4
Root system rhizome
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Environment

Light -
Soil humidity 4-9
Soil texture 5-8
Soil acidity -
Soil nutriment -
Hardiness (USDA) 8-12

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

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Distribution

Hymenasplenium obscurum world distribution map, present in Bhutan, China, Indonesia, India, Sri Lanka, Madagascar, Myanmar, Mozambique, Malawi, Nepal, Thailand, Taiwan, Province of China, Tanzania, United Republic of, Viet Nam, South Africa, and Zimbabwe

Identifiers

LSID urn:lsid:ipni.org:names:17398780-1
WFO ID wfo-0001127242
COL ID 3NHR7
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Asplenium serriforme Asplenium eroso-dentatum Hymenasplenium obscurum Asplenium obscurum Hymenasplenium pseudobscurum Hymenasplenium bivalvatum Asplenium auritum var. obscurum Asplenium unilaterale var. bivalvatum