Solanum jucundum A.R.Bean, Austrobaileya 6: 775 (2004)

T: Qld,Spinifex Road, 16 km N of Tara, 28 May 2000, A.R.Bean 16662; holo: BRI; iso: MEL, NSW.

An image of the type specimen of S. jucundum A.R.Bean can be seen on the Bean site at

Solanum sp. (Monto A.R.Bean 8817), Henderson, Names Distrib. Qld Pl. (2002).

S. tetrathecum auct. non F.Muell.: Symon, J. Adelaide Bot. Gard. 4: 176 (1981), p.p. (at least with respect to Moriarty 1553 and probably other specimens, as well as line drawing Fig. 69).


Erect, rhizomatous perennial shrub, 0.7-1.8 m high. Juvenile stage unknown. Adult branchlets grey to yellow or rusty; prickles absent or present, 0-10 per decimetre, straight, acicular or broad-based, 6-10 mm long, 6-14 times longer than wide; stellae very dense, 0.15-0.4 mm diameter, stalks 0-0.4 mm long; lateral rays 8-11, porrect, ascending or multiradiate; central ray 1-1.5 times as long as laterals, not gland-tipped; finger hairs absent; Type 2 hairs absent.

Adult leaves lanceolate or ovate, entire; lamina 2.5-8.5 cm long, 1.1-2.3 cm wide, 2.3-3.6 times longer than broad, apex acute, base obtuse or cordate, oblique part 0-3.5 mm long, obliqueness index 0-4 percent; petioles 0.4-1.3 cm long, 10-20% length of lamina, prickles absent. Upper leaf surface grey-green or grey; prickles absent; stellate hairs distributed throughout; protostellae absent; ordinary stellae dense to very dense, 0.05-0.1 mm apart, 0.2-0.4 mm across, sessile; lateral rays 6-8, porrect or ascending; central ray 0.7-1.3 times as long as laterals, not glandtipped; finger hairs absent; Type 2 hairs present throughout, 0.5-1 mm apart. Lower leaf surface yellowish, or rusty; prickles absent; stellae very dense, 0.05-0.1 mm apart, 0.2-0.4 mm diameter, stalks 0-0.3 mm long; lateral rays 7-9, porrect; central ray 0.7-1.4 times as long as laterals, not gland-tipped; finger hairs absent; Type 2 hairs absent.

Inflorescence supra-axillary, pseudo-racemose, common peduncle 6-12 mm long, rachis prickles absent; 2-5-flowered, weakly andromonoecious, flowers 5-merous; pedicels 3-10 mm long at anthesis, markedly thicker distally, 1-2 mm thick at mid-point, prickles absent. Calyx tube 2.5-4.5 mm long, lobes attenuate or rostrate, 1-10 mm long; prickles absent at anthesis; stellae very dense, white to brown or rusty, 0.3-0.5 mm across, stalks 0.1-0.4 mm long, lateral rays 7-10, central ray 0.8-1.5 times as long as laterals, not gland-tipped; finger hairs absent; Type 2 hairs absent. Corolla mauve or purple, 10-14 mm long, deeply lobed, inner surface densely stellate-hairy; anthers 4.5-6.5 mm long; ovary with Type 2 hairs only, or with stellate and Type 2 hairs; functional style 8-10 mm long, erect, with Type 2 hairs only.

Fruiting calyx with lobes less than half length of mature fruit, prickles absent. Mature fruits 1 per inflorescence, globular, 14-16 mm diameter, yellowish-green or pale green with dark green streaks, 4-locular; placenta in cross-section stalked, anvil-shaped; mesocarp moist but not juicy; exocarp 0.8-1.1 mm thick; pedicels 5-15 mm long in fruit, 0.8-2.5 mm thick at mid-point; seeds pale yellow or brown to black, 2.5-3.5 mm long.

Bean's original description of  S. jucundum, reproduced with permission from Austrobaileya 6: 775 (2004).  

A detailed description of this species can also be seen in the Bean treatment of the eastern Australian species of Solanum at

Distribution and ecology

Found in SE Qld in the Darling Downs and Maranoa Districts and also in N NSW in the NW Plains and Central W Slopes regions.

Occurs in shrubby eucalypt woodland on stony or sandy ridges.


S. jucundum is closely related to S. tetrathecum and was separated from that species by Bean (2004). The two species can be distinguished by

·         denser indumentum on the upper leaf surface of S. jucundum, this sparse to moderate in S. tetrathecum

·         usually much longer calyx lobes (1-10 mm) of S. jucundum), these 1-3.5 in S. tetrathecum

·         shrub habit reaching 1.8 m high for S. jucundum, herbaceous and 50 cm or less for S. tetrathecum

·         style of S. jucundum with glandular hairs only, that of S. tetrathecum with mixed stellate and glandular hairs

Part of the S. macoorai group of subgen. Leptostemonum according to Bean (2004).


Fig. 69 in Symon (1981) was drawn to show the features of S. tetrathecum . Bean (2004) noted (p. 775) that he considered it to be an illustration of  S. jucundum. However the illustration was done from the collection Redgen 39 which Bean still cites as representing S. tetrathecum and Bean has confirmed (pers.comm., March 2006) that the illustration does represent S. tetrathecum .


Derivation of epithet

From the Latin jucundus, pleasing or agreeable, a reference to well developed plants having a dense canopy of leaves and a showy display of flowers (Bean 2004).

Selected specimens

QLD: MITCHELL DISTRICT: E of Jericho, Jul 1934, Blake 6814 (BRI). LEICHHARDT DISTRICT: Injune–Rolleston road, c. 10 km from Injune on Rolleston road, Sep 1974, Moriarty 1554 (BRI, CANB); ‘Anchor’, 28 km SW of Duaringa, Mar 1982, Anderson 2969 (BRI); ‘Morabinda’, Taroom Shire, Jun 1993, Schefe CS7534 (BRI); Isla Gorge N.P., Jan 2000, McDonald KRM237 (BRI). PORT CURTIS DISTRICT: S.F.69 Dawes Range, SE of Thangool, Mar 1996, Bean 10113 (BRI); 16 km NNE of Biloela, T.R.170, Mar 1996, Thompson BIL236 & Price (AD, BRI). WARREGO DISTRICT: 0.4 km W of Gee Gee Gap, Mt Moffatt N.P., Dec 1997, Bean 12904 (BRI). MARANOA DISTRICT: c. 10 miles [16 km] W of Mitchell, May 1949, Everist 3745 (BRI); Moonie Highway, 61.2 km E of St George, Aug 1961, Phillips 442 (BRI, CANB); ‘Deemfern’, 53 miles [85 km] SW of Roma, Feb 1962, Nancarrow (BRI); ‘Windamore’, c. 40 miles [64 km] ESE of St George, Feb 1967, Pedley 2187 (BRI); Chesterton Range, c. 54 km N from Mungallala, Sep 1993, Purdie 4414 (BRI, CANB); near Coomrith Road, c. 25 km SSW of Glenmorgan, Apr 2001, Bean 17664 & Pedley (BRI, MEL, NSW). BURNETT DISTRICT: Fontainea Scrub, S.F.172, Gurgeena Plateau, Mar 1994, Forster PIF15067 (AD, BRI, MEL); S.F.215, c. 20 km ESE of Monto, Aug 1995, Bean 8817 (BRI). DARLING DOWNS DISTRICT: NNW of Bungunya, Jul 1945, Blake 15860 (BRI); ‘Cypress Downs’, c. 15 miles [24 km] NW of Jackson, Apr 1951, Everist s.n. (BRI); ‘Lapunyah’, 42 miles [68 km] NW of Goondiwindi, Jul 1958, Johnson 511 (BRI, CANB); Coomrith area near Meandarra, Jul 1969, Webb & Tracey 8300 (AD, BRI, CANB, K, L); Chinchilla–Miles road, c. 10 km from Miles, Sep 1974, Moriarty 1553 (AD, BRI, CANB); Gurulmundi–Woleebee road, 11 km W of Gurulmundi, Oct 1975, Williams 75053 (BRI).

NSW: NORTH WEST PLAINS: Narrabri West, Jun 1907, Boorman s.n. (NSW). CENTRAL WESTERN SLOPES: Newell Highway, 35 miles [56 km] SW of Dubbo towards Peak Hill, Nov 1969, Coveny 2514 (BRI, NSW).

Specimens cited by Bean (2004).

From the web

An image of the type specimen of S. jucundum A.R.Bean can be seen at

Further information on this species in NSW can be seen on the PlantNET site.

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