Rhysotoechia robertsonii Radlk.

Species

Angiosperms > Sapindales > Sapindaceae > Rhysotoechia

Characteristics

Tree, 6-25 m high, dbh 10-75 cm, low buttressed, outer bark patchy grey to dark grey to brown to green, (moderately) smooth except for the fine cracking and stippling, scrape red-brown, inner bark fibrous, cream. Branchlets rough to smooth, greenish brown to greyish brown; flowering twigs 4-6 mm thick. Leaves 1-4-jugate; petiole 1.3-6 cm long, terete to flattened above, slightly winged below the lowermost pair of leaflets, slightly ribbed, very laxly puberulous to glabrous; rachis 2.5-8 cm long, angular, slightly winged below the jugae, slightly ribbed, laxly puberulous to glabrous; petiolule usually a pulvinus only, up to 4 mm long, flattened above, very laxly puberulous; pulvinus 1-2 mm long, slightly grooved, very laxly puberulous. Leaflets opposite to alternate, ovate to elliptic, 6-20 by 2-7 cm, index 2.2-4.8, perga-mentaceous, both sides very laxly puberulous; base sometimes slightly oblique, acute to attenuate; margin (slightly) recurved; apex sometimes abruptly narrowing, acute to cuspidate; midrib prominent, angular, lateral nerves 0.5-1.5 apart, basally indistinctly, apically distinctly looped, intercalated veins not very distinct, veins densely reticulate, on upper surface slightly raised. Inflorescences axillary, paniculate, 10.5-17.5 cm long, laxly puberulous; bracts and bracteoles 0.5-0.7 mm long; pedicels 1-2 mm long. Flowers 4-5 mm in diam. Sepals: both sides glabrous, margin ciliate; outer ones broadly ovate, 1.5-2 by 1-1.2 mm; inner ones orbicular to elliptic, 2-2.5 by 1.5-2 mm. Petals obo-vate, 1.2-1.5 by 1-1.5 mm, outside pilose only at the base, inside pilose towards the base; claw c. 0.2 mm high, glabrous; margins lobed, thickened towards the base, pilose; apex rounded; scales absent. Disc glabrous. Stamens 8; filaments c. 3 mm long, velutinous towards the base; anthers c. 0.8 mm long, sometimes with a few hairs. Ovary c. 2 mm high, laxly sericeous towards the style; style c. 1 mm high, laxly sericeous; stigma 0.5-0.7 mm high, laxly strigose. Fruits reniform to depressed globose, 1.7-2.5 by 2-2.5 cm; outside rugose, glabrous, inside densely papillose; stipe 2-3 mm high; lobes 3, well developed, 1-1.2 by 1.2-2.2 cm; style c. 1 mm long. Seeds obovoid, 1-1.3 by 0.8-1 mm; hilum c. 0.5 mm diam.; pseudohilum c. 2 mm diam.
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Tree to 16 m high. Young parts densely rusty villous; branchlets puberulent, minutely lenticellate. Leaf rachis 9–12.5 cm long, dilated; leaflets usually 6–10, elliptic-oblong or subobovate, acuminate or acute, oblique and acute at base, 7–17 cm long, 2.5–5.5 cm wide, glabrous above, puberulous below; lateral veins 12–16 pairs; petiolules long-pulvinate, 2–6 mm long; petiole 2.5–4 cm long. Panicles 14–25 cm long, densely flowered; pedicels 2–4 mm long. Calyx lobes 2–3 mm long. Petals 2 mm long, with thickened basal margins, puberulent inside. Filaments 1–2 mm long. Fruit shortly stipitate, obovoid or subglobose, 1.6–2.8 cm long, 2.2–3.2 cm diam., 3-locular, orange-yellow with red flush; valves reticulate, glandular inside.
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Growth form tree
Growth support free-standing
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Sexuality monoecy
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Mature height (meter) 11.0 - 20.5
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Environment

Usually grows along creeks in fringing rainforest.
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Hardiness (USDA) 8-12

Usage

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Cultivation

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Distribution

Rhysotoechia robertsonii world distribution map, present in Australia, Sri Lanka, and Papua New Guinea

Identifiers

LSID urn:lsid:ipni.org:names:784562-1
WFO ID wfo-0000463845
COL ID 6WVMD
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Cupania robertsonii Rhysotoechia robertsonii Rhysotoechia contermina