Oleandra coriacea Copel.

Species

Pteridophytes > Polypodiales > Oleandraceae > Oleandra

Characteristics

Rhizome with creeping parts unknown, aerial stems unbranched and rootless, 2-3 mm thick (when dry), bearing in cross-section with a distinct sclerified peripheral sheath and few, scattered sclerified strands, not white waxy, fronds in weak to distinct clusters of 4-6. Scales persistently covering the rhizome, peltate, 5-70 by 0.5-1 mm, appressed (sometimes spreading), dark, shining with pale to brown margin and acumen, margin ciliate especially when young. Fronds monomorphic; phyllopodia short, usually less than 5 mm high, stipe 1-1.5 cm long, without dark coloration, with up to 1 mm long glandular hairs and often small, appressed scales; lamina 13-30 by 1.2-3.3 cm, linear, base narrowly cuneate to rounded, apex acuminate to caudate with cauda to 1.5 cm, texture coriaceous; costa and veins on lower surface densely hairy with up to 1 mm long, acicular hairs, costa without dark coloration, with copious, conspicuous, 3-4 mm long pale to brown scales, upper surface more glabrous, mostly hairy on the costa only, with similar hairs and with less copious scales. Sori in a single more or less irregular medial row, separated from the costa by a 2-7 mm wide sterile zone, indusium distinct, c. 1.5 mm wide, glabrous or glandular. Sporangial stalk with glands below the sporangium. Spores with coarse confluent ridges, areolae with short pointed excrescences, perispore hollow, with internal baculae, outer layer distinctly perforated.
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Growth form herb
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Environment

Terrestrial in montane forest, mainly on ridges and in summit vegetation, 1100-2200 m altitude.
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Hardiness (USDA) 10-12

Usage

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Cultivation

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Distribution

Oleandra coriacea world distribution map, present in Brunei Darussalam, Indonesia, and Malaysia

Identifiers

LSID urn:lsid:ipni.org:names:17343170-1
WFO ID wfo-0000147604
COL ID 493PQ
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Oleandra coriacea