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Solanum rostratum Dunal
Family Solanaceae
Common name: Buffalo Burr, Pincushion Nightshade

Solanum rostratum Dunal APNI*

Description: Annual herb to c. 1 m high, green or grey-green, tomentose with stellate and minute glandular hairs; prickles abundant on most parts.

Leaves ± pinnatisect, ovate to ± oblong in outline, 2–10 cm long, 1–8 cm wide, lobed; lobes obovate, lower ones often forming leaflets, both surfaces greyish tomentose; petiole to 5 cm long.

Inflorescences few-10-flowered; peduncle 15–30 mm long; rachis to 60 mm long; pedicels 5–10 mm long. Calyx 6–10 mm long, enlarged in fruit; lobes 3–5 mm long. Corolla irregularly rotate, 30–40 mm diam., bright yellow. Anthers unequal, 4 anthers straight, other anther curved.

Berry c. 10 mm diam., drying blackish, skin papery.

Flowering: chiefly summer.

Distribution and occurrence: Naturalized in cereal-growing areas, east from Tocumwal area. Native of Mexico & U.S.A.
NSW subdivisions: *NC, *NT, *ST, *NWS, *CWS, *SWS, *SWP
Other Australian states: *Qld *Vic. *W.A. *S.A.
AVH map***

A declared noxious weed in certain shires of N.S.W.

Text by B. J. Conn
Taxon concept: Flora of NSW 3 (1992)

APNI* Provides a link to the Australian Plant Name Index (hosted by the Australian National Botanic Gardens) for comprehensive bibliographic data
***The AVH map option provides a detailed interactive Australia wide distribution map drawn from collections held by all major Australian herbaria participating in the Australian Virtual Herbarium project.
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