Petrorhagia dubia (Raf.) G.Lopez & Romo APNI*
Synonyms: Petrorhagia velutina (Guss.) P.W.Ball & Heywood APNI*
Description: Erect annual to 60 cm high with internodes usually deeply furrowed, the middle ones usually with glandular hairs.
Leaves 1–5 cm long, 2–3.5 mm wide; sheaths at least twice as long as wide.
Involucral bracts keeled with mucronate apex, inner bracts to 17 mm long. Flowers shortly pedicellate. Calyx c. 10 mm long.
Capsule c. 5 mm long; seeds usually < 1.3 mm long, glandular-papillate.
Distribution and occurrence: Scattered in the eastern half of NSW. Native of Eur.
Weed of pastures and disturbed ground.
NSW subdivisions: *NC, *CC, *SC, *NT, *ST, *NWS, *CWS, *SWS, *NWP, *SWP
Other Australian states: *Qld *Vic. *Tas. *W.A. *S.A.
Hybrids between P. nanteuilii and P. dubia have been recorded for SC, NT, CT, CWS, Tas.
Text by A. Doust (1990; as P. velutina); edited KL Wilson (May 2010, Feb 2013, Nov 2014, Jan 2016)
Taxon concept: Flora of NSW 1 (1990)
APNI* Provides a link to the Australian Plant Name Index (hosted by the Australian National Botanic Gardens) for comprehensive bibliographic data
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