Solanum species of eastern and northern Australia

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A. R. Bean

Solanum karsense

Habit. Herbaceous resprouter, 0.15–0.3 m high.

Branchlets. Branchlets white or grey or yellow. Branchlet prickles 1–10 per decimetre, straight, acicular, 6–15 mm long, with dense stellate hairs on lower part. Branchlet hairs stellate. Branchlet stellae very dense. Branchlet stellae central ray 0.1–0.5 times as long as laterals, not gland-tipped. Branchlet Type 2 hairs absent.

Leaves. Leaves ovate or broadly ovate, entire or shallowly lobed throughout. Leaf lobes 0 on each side or 2–3 on each side, obtuse. Leaves 1.5–3 cm long, 1–2 cm wide, 1.5–2 times longer than broad. Leaf apex obtuse, base cuneate or obtuse. Petioles 0.3–1 cm long, prickles absent.

Upper leaf surface. Upper leaf surface grey-green. Upper leaf surface prickles absent. Upper leaf surface stellate hairs distributed throughout, protostellae absent, hair density moderate density. Upper leaf surface stellae central ray 0.1–0.5 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 white, grey. Lower leaf surface prickles absent. Lower leaf surface stellate hair density very dense. Lower leaf surface stellae central ray 0.1–0.5 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 3–12-flowered. Flowers 5-merous. Pedicels at anthesis 3–6 mm long, prickles absent. Calyx tube at anthesis 3–5 mm long. Calyx lobes at anthesis deltate, 2–4 mm long. Calyx prickles at anthesis absent. Calyx stellae very dense. Calyx stellae central ray not gland-tipped. Calyx simple hairs absent, Type 2 hairs absent. Corolla purple, 9–15 mm long, rotate. Anthers 3 mm long. Ovary with Type 2 hairs only. Functional style 10 mm long, protruding between anthers.

Fruits. Fruiting calyx lobes exceeding mature fruit or hypanthium accrescent, enclosing most or all of mature fruit, prickles absent. Mature fruits globular, 7 mm diameter. Pedicels at fruiting stage 10–15 mm long. Seeds black, 4–5 mm long.

Distribution and habitat. New South Wales. NSW: South Western Plains, South Far Western Plains.

Miscellaneous. Subg. Leptostemonum. Data source: Symon 1981, Fl of NSW, 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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