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Solanum species of eastern and northern Australia

A.R. Bean

Solanum dianthophorum

Branchlets. Branchlets rusty or brown. Branchlet prickles absent. Branchlet hairs stellate. Branchlet stellate hairs very dense, 0.4–0.5 mm diameter, stalks 0–0.1 mm long, lateral rays 8–13, lateral rays porrect, central ray 0.5–1 times as long as laterals, central ray not gland-tipped, thready or rigid.

Leaves. Leaves ovate, 1.5–3.5 cm long, 0.9–1.8 cm wide, 1.9–2.4 times longer than broad, entire. Leaf apex obtuse or acute, base obtuse or cordate, oblique part 0–1.5 mm long, obliqueness index 0–4 percent. Petioles 0.4–0.85 cm long, 20–25% length of lamina, prickles absent.

Upper leaf surface. Upper leaf surface grey-green, prickles absent or present on midvein only, prickles 0–2, prickles straight and acicular, prickles 0.5–1.5 mm long. Upper leaf surface stellate hairs distributed throughout, protostellae absent, dense, 0.1–0.2 mm apart, 0.3–0.4 mm across, stalks 0 mm long, lateral rays 8, lateral rays porrect, central ray 0.5–1 times as long as laterals, central ray not gland-tipped. Upper leaf surface simple hairs absent. Upper leaf surface short glandular hairs absent.

Lower leaf surface. Lower leaf surface yellowish, prickles absent. Lower leaf surface stellate hairs very dense, 0.05–0.15 mm apart, 0.3–0.4 mm diameter, stalks 0–0.1 mm long, lateral rays 8, lateral rays porrect, central ray 0.5–1 times as long as laterals, central ray not gland-tipped. Lower leaf surface simple hairs absent. Lower leaf surface short glandular hairs absent.

Inflorescence. Inflorescence supra-axillary, cymose (pseudo-racemose), common peduncle absent, rachis prickles absent, 2–4-flowered. Flowers 5-merous. Pedicels at anthesis 4–5 mm long, same thickness throughout, c. 0.5 mm thick at mid-point, prickles absent. Calyx tube at anthesis c. 1.5 mm long. Calyx lobes at anthesis attenuate, c. 3 mm long. Calyx prickles at anthesis present, 1–4 per flower, 0.5 mm long. Calyx stellae very dense, brown or rusty, 0.3–0.45 mm across, stalks 0–0.1 mm long, lateral rays 8, central ray 0.6–1 times as long as laterals, central ray not gland-tipped. Calyx simple hairs absent. Calyx short glandular hairs absent. Corolla c. 7 mm long, deeply lobed, inner surface glabrous. Anthers c. 3.9 mm long.

Fruits. Fruiting calyx lobes less than half length of mature fruit, prickles absent or present, prickles 0.5–1 mm long. Mature fruits 1 per inflorescence, globular, 10 mm diameter, pedicels 7–12 mm long, pedicels 0.9–1.2 mm thick at mid-point.

Distribution and habitat. Queensland. Qld: Port Curtis.

Classification. Subg. Leptostemonum. Data source: specimens.


Cite this publication as: ‘Bean, A.R. 2012 onwards. Solanum species of eastern and northern Australia. Version: 25th January 2023. delta-intkey.com’.

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