Nicotiana amplexicaulis N.T.Burb., Austral. J. Bot. 8: 359; fig. 8; t. 13, fig. 1 (1960)
T: Carnarvon Range, 63 miles S of Rolleston, Qld, 13 Nov. 1956, N.T. Burbidge 5562; holo: CANB; iso: AD, BRI, NCSC, K n.v., photo AD, MEL, NSW. An image of the type sheet can be seen on the Herbarium, Department of Botany, North Carolina State University.
Herb to 1.3 m, densely pubescent with soft, non-glandular hairs.
Leaves mostly cauline, the lower ones elliptic, the upper narrowly elliptic or lanceolate; lamina up to 22 (occasionally to 30) cm long; lower leaves petiolate, the petiole to 8 cm long, broadly winged, auriculate and stem-clasping; upper leaves sessile, the uppermost auriculate.
Inflorescence panicle-like, few-branched; lower bracts sometimes leafy. Calyx 7–14 mm long. Corolla-tube 15–20 mm long, 2–3.5 mm wide at top of calyx; limb 6–12 mm diam., the lobes obtuse or notched. Two of upper 4 anthers usually slightly above the other 2, their filaments to 2.5 mm long; filament of the 5th stamen 8–11 mm long, inserted in lower half of corolla-tube.
Capsule ellipsoid to ovoid-ellipsoid, 5 mm long. Seeds reniform, ovoid or L-shaped; testa wrinkled. n=18.
Distribution and ecology
Restricted to Carnarvon Range, southern Qld, and adjacent ranges to the east.
Grows in shaded habitats on sandstone cliffs and at cave entrances.
According to Pandey (1969) this species has flowers which are self-compatible.
Reference: Pandey, K. K. (1969) Elements of the S-gene complex V. Interspecific cross-compatibility relationships and theory of the evolution of the S complex. Genetica 40, 447-474.
A valuable summary of the cultural use of Nicotiana species in Australia is provided in D.E.Symon (2005). Native tobaccos (Solanaceae: Nicotiana spp.) in Australia and their use by Aboriginal peoples. The Beagle 21: 1-10.
Qld: Carnarvon Range, N.T. Burbidge 5560 (AD, CANB, NSW); Glenhaughton—Mapala road, M. Olsen & N.B. Byrnes 3560 (BRI).