Solanum species of eastern and northern Australia

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A. R. Bean

Solanum armourense

Habit. Erect, rhizomatous perennial shrub, 1–1.8 m high.

Branchlets. Branchlets grey or brown. Branchlet prickles 1–10 per decimetre, straight, acicular, 6–11 mm long, glabrous. Branchlet hairs stellate. Branchlet stellae very dense, 0.1–0.2 mm diameter. Branchlet stellae lateral rays 6–8, porrect. Branchlet stellae central ray 0–0.5 times as long as laterals, not gland-tipped.

Leaves. Leaves narrow lanceolate or elliptical, entire or shallowly lobed throughout. Leaf lobes 0 on each side or 2 on each side, obtuse, lobing index 1–1.5. Leaves 2.9–5.5 cm long, 0.6–1.3 cm wide, 4.2–5 times longer than broad. Leaf apex acute, base cuneate. Leaf oblique part 0–3 mm long, obliqueness index 0–5 percent. Petioles 0.5–1.2 cm long, 17–26% length of lamina, prickles absent.

Upper leaf surface. Upper leaf surface grey-green. Upper leaf surface prickles absent or present on midvein only. Upper leaf surface stellate hairs distributed throughout, protostellae absent, hair density dense. Upper leaf surface stellae 0.05 mm apart, 0.1–0.15 mm across. Upper leaf surface stellae lateral rays 6–8. Upper leaf surface stellae central ray 0–0.5 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 yellowish. Lower leaf surface prickles absent. Lower leaf surface stellate hair density very dense. Lower leaf surface stellae 0.15–0.2 mm diameter. Lower leaf surface stellae lateral rays 6–8, porrect. Lower leaf surface stellae central ray 0–0.5 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 rachis prickles absent. Inflorescence 1–4-flowered, with one bisexual flower, the rest male or some bisexual and some male flowers. Flowers 5-merous. Pedicels at anthesis 6–11 mm long, same thickness throughout, prickles absent. Calyx tube at anthesis 2.5–3.5 mm long. Calyx lobes at anthesis deltate or attenuate, 1.5–3 mm long. Calyx prickles at anthesis absent or present, 0–5 per flower. Calyx stellae dense, transparent or purple, 0.15–0.2 mm across, lateral rays 6–8. Calyx stellae central ray 0–0.5 times as long as laterals, not gland-tipped. Calyx simple hairs absent, Type 2 hairs absent. Corolla purple, 7–9 mm long, rotate or shallowly lobed. Anthers 3.2–4.6 mm long. Ovary with Type 2 hairs only. Functional style 6.5–7 mm long, protruding between anthers, with Type 2 hairs only.

Fruits. Fruiting calyx lobes less than half length of mature fruit, prickles absent or present. Mature fruits 1–2 per inflorescence, globular, 2-locular. Mature fruits interior moist but not juicy. Seeds white or pale yellow.

Distribution and habitat. New South Wales. NSW: Central Tablelands. Shrubby eucalypt woodland, remote from rainforest.

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’.

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