Solanum species of eastern and northern Australia

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A. R. Bean

Solanum marginatum

Habit. Erect, rhizomatous perennial shrub, 0.5–1.5 m high.

Branchlets. Branchlets white or grey. Branchlet hairs stellate. Branchlet stellae very dense.

Leaves. Leaves ovate or broadly ovate, shallowly lobed throughout. Leaf lobes 3–5 on each side, obtuse. Leaves 9–13 cm long, 7–11 cm wide. Leaf apex obtuse, base obtuse or cordate. Petioles 1.5–2.5 cm long, prickles absent or present.

Upper leaf surface. Upper leaf surface grey-green. Upper leaf surface prickles present on midvein only or present on midvein and lateral veins. Upper leaf surface stellate hairs distributed throughout, hair density very sparse to moderate density. Upper leaf surface stellae central ray not gland-tipped. Upper leaf surface simple hairs absent.

Lower leaf surface. Lower leaf surface white, grey. Lower leaf surface stellate hair density very dense. Lower leaf surface stellae central ray 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 absent. Inflorescence 2–10-flowered, with one bisexual flower, the rest male or some bisexual and some male flowers. Flowers 5–6-merous, markedly dimorphic, with larger pricklier basal flower(s). Pedicels at anthesis 20–25 mm long. Calyx prickles on basal bisexual flowers 40–60. Calyx prickles on distal male flowers 0–15. Calyx prickles at anthesis absent or present, 0–60 per flower. Calyx stellae very dense. Calyx stellae central ray not gland-tipped. Calyx simple hairs absent, Type 2 hairs absent. Corolla white or mauve, 15–20 mm long, rotate, inner surface sparsely stellate-hairy or densely stellate-hairy. Anthers 6–7 mm long. Ovary with stellate hairs only. Functional style 10 mm long, protruding between anthers, with stellate hairs only.

Fruits. Mature fruits 1–3 per inflorescence, globular, 30–40 mm diameter, yellow or yellowish-green. Pedicels at fruiting stage 25 mm long. Seeds pale yellow or black, 2–2.5 mm long.

Distribution and habitat. Victoria, Tasmania.

Miscellaneous. Naturalised. Subg. Leptostemonum. Data source: Symon 1981 & Fl of Vic.


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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