Foambark Tree

Jagera pseuodorhus var. pseudorhus

 

Sapindaceae

Jagera pseudorhus var. pseudorhus

FOAMBARK TREE, PINK FOAMBARK

Small or medium-sized tree to 25 cm high, rarely a large tree and more than 25 m high, larger trunks sometimes fluted; bark dark grey with lighter grey blotches, smooth, with horizontal ridges. Buds and stems densely hairy with soft brown simple hairs, stems remaining hairy, longitudinally ribbed; leaves often clustered towards end of stems, but not arranged in pseudo-whorls;  stipules absent.

Leaves pinnately compound with sapling leaves often partly bipinnate, alternate, 20–45 cm long; rachis and secondary rachises hairy; pinnate leaves without a true terminal leaflet and rachis tip projecting beyond last leaflet; bipinnate leaves with secondary rachises sometimes winged and with a true terminal leaflet; petiole 5–21 cm long, hairy. Leaflets 8–20 (rarely to 24), opposite to sub-opposite or alternate; laminas ± lanceolate to oblong-elliptic, usually 2–6 cm long and 0.5–2 cm wide, apex acute, base cuneate to rounded and often asymmetric, margins regularly or irregularly toothed to ± entire, upper surface dark green, slightly glossy and ± sparsely hairy, hairs often very short and scattered and leaflets appear hairless, lower surface paler green and dull, sparsely hairy with soft fawn to colourless hairs; pinnately veined with 8–12 pairs of lateral veins, distinct on both surfaces; petiolules 1–15 mm long.

Inflorescences axillary, thyrsoid, 4–26 cm long. Flowers functionally unisexual and plants monoecious, actinomorphic, 4–6 mm diam., whitish yellow or pinkish red, calyx shortly 5-lobed, petals 5, c. 3 mm long and with 2 erect scales at base; male flowers with usually 8 stamens and a rudimentary ovary; female flowers with usually 8 staminodes and a 3-locular superior ovary, densely hairy.

Fruit becoming dry, a capsule, broadly ovoid, 1.4–1.8 cm long, velvety red to yellow or yellowish brown, covered with stiff brownish irritating hairs, opening in 3 thick-walled valves; seed 1 per lobe, black or dark brown and with a basal yellow to orange aril.

Illustration of leaves & fruit

Habitat and Distribution:

In STRf, DRf and LRf; north from Seal Rocks, N.S.W., to Cape York, N Qld; also in New Guinea.

Notes:

Only the type variety grows in the area covered by this treatment. Jagera pseudorhus var. integerrima occurs in N Qld from Millaa Millaa on the Atherton Tableland to Windsor Tableland. It differs in that the margins of the leaflets are always entire.

Leaves pinnately compound

Juvenile leaves partly bipinnate

Inflorescences thyrsoid

Male flower with stamens and rudimentary ovary

Female flowers with developing fruit

Immature fruit velvety

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