Solanum intonsum A.R.Bean, Austrobaileya 6: 763 (2004)
T: Qld, Smiths track, Barron Gorge NP, 6 May 2000, A.R.Bean 16542; holo: BRI; iso: MEL, NSW.
Solanum sp. (Font Hills J.R.Clarkson 7901) Henderson, Names Distrib.
Erect, rhizomatous perennial shrub, 0.8-2 m high. Juvenile branchlets with 30-50 prickles per dm, 1-7 mm long; leaves (in outline) ovate, entire or shallowly-lobed, with 2 or 3 pairs of lobes; lamina 9.5-14 cm long, 5.5-6 cm wide, with 0-7 prickles on upper surface. Adult branchlets yellow; prickles absent or present, 0-5 per decimetre, straight, broad-based, 0.5-6 mm long, 4-7 times longer than wide; stellae dense to very dense, 0.3-0.5 mm diameter, stalks 0-0.2 mm long; lateral rays 6-8, porrect; central ray 0.3-0.7 times as long as laterals, not gland-tipped; finger hairs absent; Type 2 hairs absent.
Adult leaves lanceolate or ovate, entire; lamina 4.5-16.5 cm long, 1.3-6.5 cm wide, 2.1-4.5 times longer than broad, apex acute, base cuneate or obtuse, oblique part 0-5 mm long, obliqueness index 0-6 percent; petioles 0.3-2.5 cm long, 7-30% length of lamina, prickles absent. Upper leaf surface green or grey-green; prickles absent; stellate hairs distributed throughout; proto-stellae present; ordinary stellae density moderate to dense, 0.1-0.2 mm apart, 0.15-0.25 mm across, sessile; lateral rays 4-10, ascending; central ray 0.5-1 times as long as laterals, not gland-tipped; finger hairs absent; Type 2 hairs absent. Lower leaf surface white; prickles absent; stellae dense to very dense, 0.05-0.1 mm apart, 0.4-0.6 mm diameter, stalks 0-0.2 mm long; lateral rays 7 or 8, porrect; central ray 0.2-0.6 times as long as laterals, not gland-tipped; finger hairs absent; Type 2 hairs absent.
Inflorescence supra-axillary, pseudo-umbellate or pseudo-racemose, common peduncle 0-5 mm long, rachis prickles absent; 2-7-flowered, weakly andromonoecious, flowers 5-merous; pedicels 4-9 mm long at anthesis, same thickness throughout, 0.5-0.8 mm thick at mid-point, prickles absent. Calyx tube 3-4.5 mm long, lobes attenuate, 1-5 mm long; prickles absent at anthesis; stellae dense to very dense, yellow, 0.25-0.4 mm across, stalks 0-0.1 mm long, lateral rays 7 or 8, central ray 0.5-1 times as long as laterals, not gland-tipped; finger hairs absent; Type 2 hairs absent. Corolla purple, 9-13 mm long, shallowly lobed, inner surface sparsely stellate-hairy; anthers 4.5-5.5 mm long; ovary with Type 2 hairs only; functional style 8-9 mm long, erect, with stellate hairs only or with Type 2 hairs only, stellae c. 0.3 mm across, lateral rays 5-6, central ray 0.5-1 times as long as laterals.
Fruiting calyx with lobes less than half length of mature fruit, prickles absent. Mature fruits 1 or 2 per inflorescence, globular, 15-17 mm diameter, green, 2-locular; placenta in cross-section sessile, linear; mesocarp moist but not juicy; exocarp c. 2 mm thick; pedicels 7-10 mm long in fruit, 0.8-1 mm thick at mid-point; seeds pale yellow, 2.3-2.8 mm long.
Description by Bean, reproduced with permission from Austrobaileya 6: 763 (2004).
A detailed description of this species can also be found in the Bean treatment of the eastern Australian species of Solanum at http://delta-intkey.com/solanum/www/intonsum.htm
Distribution and ecology
Occurs from Coen to Cairns in eucalypt woodland or on rainforest or vine thicket margins associated with hilly areas.
Closest to S. magnifolium but differing by
- ovary with glandular hairs in S. intonsum, these stellate in S. magnifolium
- mature fruits green in S. intonsum, these yellow or yellowish-green in S. magnifolium
- mature fruits 15-17 mm diameter in S. intonsum, these 20-27 mm diameter in S. magnifolium
- pedicels in mature fruits 7-10 mm long in S. intonsum, these 19-23 mm long in S. magnifolium
Considered to be part of the S. macoorai group of subgen. Leptostemonum by Bean (2004).
A line drawing of this species can be found in Austrobaileya 6: 765 (2004).
Derivation of epithet
From in-, Latin prefix for not, and tonsus, Latin for shaven, a reference to the dense indumentum of the leaves.
QLD: COOK DISTRICT: sources of Stuart’s River [Stewart River near Coen], 1891, Johnson s.n. (MEL); Hartley’s Creek, Cook Highway, Jul 1936, Flecker 1972, 1986 (BRI); Mt Carbine, Nov 1967, Cassels (BRI, QRS); S.F.700, Mar 1968, Hyland 4068 (BRI, QRS); Flinders Island, c. 7 km N of Bathurst Head, Jun 1978, Clarkson 2215 (BRI); Earl Hill near Cairns, Oct 1979, Batianoff 1292 & McDonald (AD, BRI); Richards Creek, Mount Mulligan, Apr 1984, Clarkson 5268 (AD, BRI, QRS); ‘Font Hills’, c. 15 km W of Mount Molloy, Apr 1989, Clarkson 7901 & Henderson (AD, BRI, DNA); Mt Alto, c. 4 km SSW of Mt Carbine, Apr 1989, Clarkson 7939 & Henderson (BRI); Cape Melville N.P., 2 km SSE of Temple Hill, May 1993, Fell DGF3172 & Stanton (BRI, CANB); S.F.144, Chowchilla L.A., Mar 1994, Hyland 15058 (QRS); Bakers Blue Mtn, Apr 1995, Hyland 15294 (QRS); Smiths Track, Barron Gorge N.P., Mar 1997, Jago 4284 (BRI).
From the web
Further information and links for this species can be found on the Solanaceae Source site.