Woodwardia prolifera Hook. & Arn.

Species

Pteridophytes > Polypodiales > Blechnaceae > Woodwardioideae > Woodwardia

Characteristics

Plants terrestrial. Stems stout, short-creeping to suberect, densely clothed at the apex with large, broadly to narrowly lanceolate, orange-brown scales; trophopods present. Fronds drooping, wintergreen and coriaceous, clustered near the stem apex, gemmi­ferous with scattered to numerous, articulated gemmae on the adaxial surface of the lamina, such gemmae generally positioned opposite and replacing a sorus on one or more primary areoles of the costae and costules, each gemma generally developing one or at most two elliptical fronds less than 1 cm long. Stipes 33-99 cm long, stramineous to greenish throughout, expanded at base, with two large adaxial vascular bundles and an arc of several smaller abaxial vascular bundles, densely scaly at the base and bearing scurfy remnants of multicellular glands, hairs and scales distally, the scales sometimes leaving distinct scars after abscising, especially near the stipe base. Laminae 42-126 cm long, narrowly ovate-deltate, pinnate-pinnatifid, pale green, glandular and scaly during emergence, becoming dark green and glabrous at maturity; pinnae 7-12 pairs, the proximal to medial ones 15-42 and 2-12 cm, alternately arranged, pinnatifid, narrowly ovate, basally strongly asymmetric by the reduction of several basalmost basiscopic lobes, pinna lobes falcate-ascending, narrowly ovate (broadly attached to costa, but constricted immediately above), acuminate, separated from each other by broad sinuses, coarsely serrulate along a strongly involute margin. Sori 1-3 mm long, linear-elongate to lunate, deeply immersed in the lamina, mostly confined to the primary areoles of the costules; indusia cartilaginous with a thickened basal flange and a membranous conduplicate margin, vaulted, opening along a basal hinge like the lid of a box upon dehiscence of the sporangia. Spores 64, 30-34 by 22-25 µm (exclusive of the perispore), surrounded by a tightly appressed perispore presenting a reticulum of raised narrow ridges and rugulose expanses between the ridges ornamented with aggregations of rods and cristae.
More
Rhizome decumbent, dark brown, stout, densely scaly; scales red-brown, lanceolate, 2-4 cm, membranous, entire or with a few teeth, fibriform. Stipes close, 30-110 cm, 3-15 mm in diam., base densely scaly; upper part of stipe and rachis sparsely covered with brown, broadly lanceolate scales, surface rough with scale scars; lamina deeply bipinnatifid, brown or slightly green when dry, oblong-ovate or elliptic, 35-120 × 30-40 cm, leathery, glabrous, apex acuminate; pinnae 5-9(-13) pairs, shortly stalked, lanceolate; lower and middle pinnae 10-30 × 4-9 cm, deeply pinnatifid to 1-2 mm from costa, base asymmetrical with 1-3 basiscopic lobes lacking, apex long acuminate or caudate; lobes 10-14(-24) pairs, close or separate, oblique, oblong-lanceolate, 3-7(-9) × 0.5-0.9 cm, slightly narrowed to base, margin cuspidately serrulate, occasionally lobed, apex long acuminate or caudate; veins obvious, anastomosing with 1 row of areoles along costae and 2 or 3 rows of discrete, polygonal areoles, free distally, simple or forked. Leaf-bearing bulbils small and usually abundant on adaxial surfaces of pinna lobes. Sori occupying costular areoles, crescent-shaped or elliptic, sunken in rimmed depressions; indusia dark brown, thickly papery. 2n = 68.
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Growth form herb
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Mature width (meter) 1.5 - 2.5
Mature height (meter) 1.0 - 1.5
Root system rhizome
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Environment

Warm-temperate, subtropical and tropical mixed broadleaf evergreen forests, frequently where there is disturbance such as roadside banks, disturbed forests, rocky ravines, and meadows. Woodwardia prolifera thrives in somewhat disturbed or open situations where it receives at least some partial sun. Fine stands of this species can be found along road-cuts and high up on stream banks and along wet cliffs. Altitude 0-1000 m.
Light 1-6
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Soil acidity 2-6
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Hardiness (USDA) 9-12

Usage

Uses medicinal
Edible -
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Cultivation

Can be grown by divisions.
Mode divisions
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Images

Woodwardia prolifera unspecified picture

Distribution

Woodwardia prolifera world distribution map, present in China, Cayman Islands, Hong Kong, Japan, Philippines, and Taiwan, Province of China

Identifiers

LSID urn:lsid:ipni.org:names:17235490-1
WFO ID wfo-0001126560
COL ID 5C3CQ
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Woodwardia exaltata Woodwardia prolifera Woodwardia angustiloba