Solanum species of eastern and northern Australia
Habit. Erect, rhizomatous perennial shrub, 0.3–0.6 m high. Large stems prickles absent.
Branchlets. Branchlets white or grey. Branchlet prickles absent. Branchlet hairs stellate. Branchlet stellae very dense, 0.3–1 mm diameter, stalks 0–0.6 mm long. Branchlet stellae lateral rays 7–8, porrect. Branchlet stellae central ray 0.7–1.2 times as long as laterals, not gland-tipped, thready or rigid. Branchlet Type 2 hairs absent.
Leaves. Leaves lanceolate or ovate, entire. Leaves 2.5–7 cm long, 1.2–2.8 cm wide, 1.8–3 times longer than broad. Leaf apex obtuse or acute, base obtuse or cordate. Leaf oblique part 0–3 mm long, obliqueness index 0–5 percent. Petioles 0.4–1.4 cm long, 15–35% length of lamina, 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 to dense. Upper leaf surface stellae 0.1–0.3 mm apart, 0.4–0.7 mm across, stalks 0.1–0.3 mm long. Upper leaf surface stellae lateral rays 7–8, porrect. Upper leaf surface stellae central ray 0.7–1.8 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 green or yellowish. Lower leaf surface prickles absent. Lower leaf surface stellate hair density dense to very dense. Lower leaf surface stellae 0.05–0.15 mm apart, 0.5–0.7 mm diameter, stalks 0.2–0.4 mm long. Lower leaf surface stellae lateral rays 7–8, porrect. Lower leaf surface stellae central ray 0.5–1.2 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, solitary or sessile (rachis very short or absent) or cymose (pseudo-racemose). Inflorescence common peduncle absent or present, 0–3 mm long. Inflorescence 3–5-flowered, with all flowers bisexual. Flowers 4–5-merous. Pedicels at anthesis 4–7 mm long, same thickness throughout, 0.9–1 mm thick at mid-point, prickles absent. Calyx tube at anthesis 1–2 mm long. Calyx lobes at anthesis elliptic, 2.5–7 mm long. Calyx prickles at anthesis absent. Calyx stellae very dense, white, 0.4–1 mm across, stalks 0–0.25 mm long, lateral rays 7–8. Calyx stellae central ray 0.8–1.2 times as long as laterals, not gland-tipped. Calyx simple hairs absent, Type 2 hairs absent. Corolla mauve or purple, 7–10 mm long, rotate or shallowly lobed, inner surface glabrous. Anthers 3–4 mm long. Ovary with Type 2 hairs only. Functional style 5.5–8 mm long, protruding between anthers, with Type 2 hairs only.
Fruits. Fruiting calyx lobes exceeding mature fruit, prickles absent. Mature fruits 1 per inflorescence, globular, 4.5–9 mm diameter, red, glabrous or with a few scattered Type 2 hairs, 1-locular (septum absent or incomplete). Mature fruits placenta not apparent. Mature fruits interior juicy, succulent, pericarp 0.2–0.25 mm thick. Pedicels at fruiting stage 6–11 mm long, 0.8–1.2 mm thick at mid-point. Seeds pale yellow, 2–2.3 mm long.
Distribution and habitat. Queensland. Qld: Moreton, Darling Downs, Burnett, Leichhardt, Port Curtis. Shrubby eucalypt woodland, remote from rainforest, lancewood communities (dominated by Acacia catenulata, shirleyi, burrowii, etc.).
Miscellaneous. Subg. Leptostemonum. Data source: specimens.
Illustrations. • fruit. • flower. • flowers and fruit. • 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’.