Line drawing of S. innoxium by W.A.Smith from Austrobaileya 6: 679 (2004). Reproduced with permission.

Distribution map generated from Australia's Virtual Herbarium.


Solanum innoxium A.R.Bean, Austrobaileya 6: 678 (2004).

T: Qld; Maranoa District; slopes of Thomby Ra., Glen Fosslyn, SE of Surat, 31 Aug. 2001, A.R.Bean 17775; holo: BRI; iso: MEL, NSW.

S. nemophilum auct.non F.Muell.: Symon, J. Adelaide Bot. Gard. 4: 144 (1981), p.p.


Erect, rhizomatous perennial shrub, 0.3-0.6 m  high. Leaves (in outline) lanceolate, entire;  without prickles on upper surface. Adult stem  prickles absent. Adult branchlets yellow or  brown; prickles absent; stellae very dense,  0.25-0.4 mm diameter, sessile; lateral rays 7  or 8, porrect; central ray 3-4 times as long as  laterals, not gland-tipped; finger hairs absent;  Type 2 hairs absent.

Adult leaves lanceolate or  ovate, entire; lamina 2.5-7 cm long, 0.8-2 cm  wide, 2.6-4.2 times longer than broad, apex  obtuse or acute, base obtuse or cordate, oblique  part 0-2 mm long, obliqueness index 0-5  percent; petioles 0.4-0.8 cm long, 11-19%  length of lamina, prickles absent. Upper leaf  surface grey-green; prickles absent; stellate  hairs distributed throughout; protostellae  absent; ordinary stellae density moderate to  dense, 0.1-0.15 mm apart, 0.2-0.3 mm across,  sessile; lateral rays 7 or 8, porrect; central ray  3-6 times as long as laterals, not gland-tipped;  finger hairs absent; Type 2 hairs absent. Lower  leaf surface white or yellowish; prickles absent;  stellae very dense, 0.05-0.1 mm apart,  0.25-0.4 mm diameter, stalks 0-0.1 mm long;  lateral rays 7 or 8, porrect; central ray 3-5 times  as long as laterals, not gland-tipped; finger  hairs absent; Type 2 hairs absent.

Inflorescence  supra-axillary, solitary or pseudo-umbellate,  common peduncle absent; 1 or 2-flowered, with  all flowers bisexual and 4 or 5-merous; pedicels  5-11 mm long at anthesis, same thickness  throughout, 0.7-0.8 mm thick at mid-point,  prickles absent. Calyx tube 1-1.5 mm long,  lobes elliptic, 4-5.5 mm long; prickles absent  at anthesis; stellae very dense, transparent,  0.25-0.4 mm across, sessile, lateral rays 7 or  8, central ray 2.5-5 times as long as laterals,  not gland-tipped; finger hairs absent; Type 2  hairs absent. Corolla mauve or purple, 7-9 mm  long, deeply lobed, inner surface glabrous;  anthers 3-4.5 mm long; ovary with Type 2 hairs  only, or with stellate and Type 2 hairs;  functional style 4-5 mm long, erect, glabrous  or with stellate and Type 2 hairs, stellae  0.2-0.25 mm across, lateral rays 7 or 8, central  ray c. 1 times as long as laterals.

Fruiting calyx  with lobes exceeding mature fruit, prickles  absent. Mature fruits 1 per inflorescence,  ellipsoidal, 3-4.5 mm diameter, red, with a few  scattered Type 2 hairs, 1-locular (septum absent  or incomplete); placenta not apparent;  mesocarp juicy, succulent; exocarp 0.2-0.3 mm  thick; pedicels 7-11 mm long in fruit, 0.7-0.8  mm thick at mid-point; seeds pale yellow,  2.2-2.3 mm long.

Description reproduced with permission from Bean, Austrobaileya 6: 678 (2006).

A detailed description of S. innoxium can also be found in the Bean treatment of the eastern Australian species of Solanum at

Distribution and ecology

Found only in Queensland where it occurs in the Yuleba-Westmar region.

Habitat is variable, ranging from ridges dominated by Acacia shirleyi or A. catenulata, Eucalyptus populnea woodland or from brigalow (Acacia harpophylla). Soils range from loams to clays (Bean 2004).


Treated as part of the S. densevestitum group of the subg. Leptostemonum (Bean 2004), together with S. gympiense, S. hapalum, S. densevestitum, S. johnsonianum, S. nemophilum and S. ultimum .


A line drawing of this species can be found in Austrabaileya 6: 679 (2004).


Derivation of epithet

From innoxius, Latin for harmless, a reference to the lack of prickles on this species.

Selected specimens

QLD: E  of Combididan Farm, ‘Cypress Downs’ [NE of Yuleba], Sep  1961, Jones 166 (BRI); ‘Boxleigh’, S of Surat, Aug 2001, A.R.Bean 17762 (BRI, MEL, NSW); Thomby Range, SW of Glenmorgan, Jan 2002, A.R.Bean 18367 (BRI); ‘Silver Springs’, S of Surat, Jan 2002, A.R.Bean 18374 (BRI). ‘Calala’, c. 10 miles [16 km] E of Meandarra, Jun  1960, R.Johnson 1620A (BRI); ‘Woodlands’, 5 miles [8 km]  SW of Westmar, Jul 1961, L.Pedley 792 (BRI, CANB);  Hannaford, 42 km W of Tara, Apr 1963, T.J. McDonald 63  (BRI, CANB).    

Plant status, if any

A category of “Vulnerable” has been recommended since the species is only known from a few locations and is not found in conserved areas (Bean 2004).

From the web

Further information and links for this species can be found on the Solanaceae Source site.