Solanum species of eastern and northern Australia
Habit. Erect, rhizomatous perennial shrub, 1 m high.
Branchlets. Branchlets grey or brown. Branchlet prickles 5–10 per decimetre, straight, broad-based, 1.5–7 mm long, 5–8 times longer than wide, glabrous or with scattered stellate hairs on lower half. Branchlet hairs stellate. Branchlet stellae dense or very dense, 0.25–0.4 mm diameter, stalks 0–0.1 mm long. Branchlet stellae lateral rays 8–12, ascending. Branchlet stellae central ray 1 times as long as laterals, not gland-tipped. Branchlet Type 2 hairs absent.
Leaves. Leaves lanceolate, entire. Leaves 4.8–7.6 cm long, 1.6–2.2 cm wide, 2.8–4.3 times longer than broad. Leaf apex acute, base cuneate. Leaf oblique part 0–3 mm long, obliqueness index 0–6 percent. Petioles 0.5–0.8 cm long, 8–14% length of lamina, prickles absent or present.
Upper leaf surface. Upper leaf surface grey. Upper leaf surface prickles absent. Upper leaf surface stellate hairs distributed throughout, protostellae absent, hair density dense or very dense. Upper leaf surface stellae 0.05–0.15 mm apart, 0.25–0.5 mm across, stalks 0–0.2 mm long. Upper leaf surface stellae lateral rays 8–13, ascending or multiradiate. Upper leaf surface stellae central ray 1 times as long as laterals, not gland-tipped. Upper leaf surface simple hairs absent. Upper leaf surface Type 2 hairs absent.
Lower leaf surface. Lower leaf surface white, grey or yellowish. Lower leaf surface prickles absent. Lower leaf surface stellate hair density very dense. Lower leaf surface stellae 0.05 mm apart, 0.25–0.5 mm diameter, stalks 0–0.1 mm long. Lower leaf surface stellae lateral rays 8–13, ascending or multiradiate. Lower leaf surface stellae central ray 1 times as long as laterals, not gland-tipped. Lower leaf surface simple hairs absent. Lower leaf surface Type 2 hairs absent.
Inflorescence. Inflorescence supra-axillary, cymose (pseudo-racemose). Inflorescence common peduncle 4–10 mm long. Inflorescence rachis prickles absent. Inflorescence 6–11-flowered, with some bisexual and some male flowers. Flowers 5-merous. Pedicels at anthesis 3–5.5 mm long, same thickness throughout, 0.8–0.9 mm thick at mid-point, prickles absent. Calyx tube at anthesis 2.5–4.5 mm long. Calyx lobes at anthesis deltate or attenuate, 0.5–1.5 mm long. Calyx prickles at anthesis absent. Calyx stellae very sparse to sparse or moderate or dense or very dense, yellow or purple or brown or rusty, 0.3–0.4 mm across, stalks 0–0.1 mm long, lateral rays 9–13. Calyx stellae central ray 1 times as long as laterals, not gland-tipped. Calyx simple hairs absent, Type 2 hairs absent. Corolla purple, 12–16 mm long, rotate, inner surface glabrous. Anthers 5.1–5.4 mm long. Filaments 1.7 mm long. Ovary with Type 2 hairs only. Functional style 9 mm long, protruding between anthers, with stellate and Type 2 hairs.
Fruits. Fruiting calyx prickles absent. Mature fruits pericarp 0.1–0.3 mm thick. Pedicels at fruiting stage 8–9 mm long, 1 mm thick at mid-point.
Distribution and habitat. Western Australia.
Miscellaneous. Subg. Leptostemonum. Data source: specimens.
Cite this publication as: ‘Bean, A.R. 2012 onwards. Solanum species of eastern and northern Australia. Version: 29th June 2013. http://delta-intkey.com’.