Hibiscus fluvialis Juswara & Craven

Species

Angiosperms > Malvales > Malvaceae > Hibiscus

Characteristics

Subshrub or shrub to 3 m high. Branchlets with stellate hairs of two size classes (long coarse stellate hairs 1.3–1.6 mm long, short coarse stellate hairs 0.2–0.4 mm long), indumentum not obscuring the epidermis, lacking glandular hairs. Mature leaves: petiole 25–100 mm long; lamina broadly elliptic, 3-lobed, 36–106 mm long, 28–95 mm wide, base cordate, margin serrate-dentate to crenate, apex acute, indumentum of short soft stellate hairs, whitish to yellowish. Flowers with the peduncle obsolete or up to 5 mm long, pedicel present; epicalyx short soft stellate-hairy, 6-or 7-segmented, segments shortly connate at base, narrowly spathulate to linear-obovate, 9–20 mm long, 1– 2 mm wide, shorter to longer than the calyx; calyx short soft stellate-hairy on the abaxial surface, campanulate, 14–20 mm long, lobes ovate, apex acute, 3-veined; petals yellow with red basal spots, short coarse stellate-hairy on the abaxial surface, glabrous on the adaxial surface, 15–24 mm long, 8–12 mm wide, rounded at the apex; staminal column glabrous, 10–17 mm long, stamens distributed throughout, filaments 0.2–0.4 mm long; ovary hairy, style arms 0.4–1 mm long. Capsule hairy, 14–20 mm long, 10–12 mm wide, beak 1– 2 mm long. Seeds angular reniform, 2–3 mm long, concentrically ribbed, glabrous or short brownish stellate-hairy.
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Foliage retention deciduous
Sexuality hermaphrodite
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Mature height (meter) 3.0
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Environment

Recorded as occurring in riverine habitats such as riparian closed forest; on flat sandy area in open forest of Melaleuca leucadendra; in a sandy river bed; in sand above river under Casuarina; and with Casuarina cunninghamiana, Syzygium forte and Terminalia microcarpa. The species appears to be associated always with rivers and seems usually to occur on sandy substrates.
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Hardiness (USDA) 8-12

Usage

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Cultivation

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Germination treatment soaking
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Distribution

Hibiscus fluvialis world distribution map, present in Australia

Identifiers

LSID urn:lsid:ipni.org:names:77069580-1
WFO ID wfo-0000722560
COL ID 3LJR8
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Hibiscus fluvialis