Solanum species of eastern and northern Australia

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A. R. Bean

Solanum centrale

Habit. Erect, herbaceous resprouter, 0.2–0.4 m high. Large stems prickles present.

Branchlets. Branchlets yellow or rusty or brown. Branchlet prickles absent or present, 0–2 per decimetre, straight, acicular, 4–7 mm long, 7–10 times longer than wide, glabrous or with scattered stellate hairs on lower half. Branchlet hairs stellate. Branchlet stellae very dense. Branchlet stellae lateral rays porrect. Branchlet stellae central ray not gland-tipped. Branchlet simple hairs absent.

Leaves. Leaves elliptical or ovate, entire. Leaf apex obtuse or acute, base cuneate or obtuse. Petioles prickles absent.

Upper leaf surface. Upper leaf surface grey-green or grey. Upper leaf surface prickles absent. Upper leaf surface stellate hairs distributed throughout, protostellae absent, hair density dense to very dense. Upper leaf surface stellae lateral rays porrect. Upper leaf surface stellae central ray 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 or rusty. Lower leaf surface prickles absent. Lower leaf surface stellate hair density very dense. Lower leaf surface stellae lateral rays porrect. Lower leaf surface stellae central ray 0.75 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 6-flowered. Flowers 5-merous. Pedicels at anthesis 4–5 mm long, same thickness throughout or markedly thicker distally, prickles absent. Calyx prickles at anthesis absent. Calyx stellae very dense, brown or rusty. Calyx stellae central ray not gland-tipped. Calyx simple hairs absent, Type 2 hairs absent. Corolla mauve or purple, deeply lobed, inner surface sparsely stellate-hairy. Anthers 3.9–4.8 mm long. Ovary with stellate hairs only. Functional style 7.5–8 mm long, protruding between anthers, with stellate hairs only.

Fruits. Fruiting calyx lobes less than half length of mature fruit or lobes more than half length of mature fruit, prickles absent. Mature fruits globular, yellow or yellowish-green.

Distribution and habitat. Northern Territory, Western Australia. Red earths in mulga (Acacia aneura) dominated communities.

Miscellaneous. Subg. Leptostemonum. Data source: specimens.

Illustrations. • closeup of flowers. • whole plant.


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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