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Electronic Flora of South Australia species Fact Sheet

Rapistrum rugosum

Citation: All., Fl. Ped. 1:257 (1785).

Synonymy: Myagrum rugosum L., Sp. Pl. 640 (1753).

Common name: Short-fruited wild turnip, turnip weed, wild turnip, giant mustard.

Description:
Annual or biennial herbs, branched, erect, 15-60 (rarely to 90) cm tall, hispid, glaucous; lower leaves lyrate-pinnatifid, with irregular to coarse dentate margins, to 25 cm long, petiolate; cauline leaves reducing.

Sepals 2.5-3 mm long; petals 5-10 mm long, yellow, dark-veined.

Silicula 5-10 mm long, indehiscent, articulating between the segments; lower segment cylindrical, 2.3-3.3 mm long, c. 1.3 mm wide; upper segment 3-6 mm long, 3-4 mm wide, rugose, ribbed; beak narrow, conical, 1-3 mm long; seeds dimorphic; upper seed ovoid, c. 2 mm long; lower seed small, aborted or absent.

image of FSA1_Rapistrum_rug.jpg Rapistrum rugosum
Image source: fig 220a in Jessop J.P. & Toelken H.R. (Ed.) 1986. Flora of South Australia (4th edn).

Published illustration: Orchard, (1946) d. Dept Agric. S. Aust. 50:179; Hewson (1982) Fl. Aust. 8:fig. 47F-G; Cunningham et al. (1982) Plants of western New South Wales, p. 330.

Distribution:  The plant is a troublesome weed of agriculture and roadsides.

  Qld; N.S.W.; Vic.; Tas.   native to the Mediterranean.

Conservation status: naturalised

Flowering time: Sept. — Dec.


SA Distribution Map based
on current data relating to
specimens held in the
State Herbarium of South Australia

Biology: No text

Author: Not yet available


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