Wahlenbergia fluminalis
(J.M.Black) E.Wimm. ex H.EichlerTufted perennial, usually many-stemmed from a thickened taproot, glabrous or rarely hirsute near base, often somewhat glossy; stems erect or ascending, 5–80 cm long, usually many-branched, usually with some leaves in upper half (often leafy c. throughout); leaves alternate, narrowly oblanceolate to linear throughout, 5–50(–80) mm long, 1–3(–5) mm wide; margins entire, or with small callus-teeth. Hypanthium goblet-shaped to shortly obconical, 1–3 mm long; calyx-lobes spreading, narrow-triangular, 1–3 mm long; corolla rotate, blue, tube 0.5–1.5 mm long, shorter than calyx-lobes, lobes elliptic to obovate, 3–9 mm long, 2–5.5 mm wide, obtuse to acute, widely spreading; style 2.5–4 mm long, strongly constricted in upper third, lobes 3, ovate. Capsule hemispherical to obconical, 2–5 mm long, 1.5–3 mm wide. Flowers mainly Sep.–Dec.
LoM, MuM, Wim, VVP, VRiv, MSB, RobP, MuF, Gold, CVU, GGr, DunT, NIS. Also SA, Qld, NSW. Locally abundant along the Murray River and its floodplain downstream of c. Yarrawonga. Occasional in areas away from the river (e.g. Warby Range, Little and Big Deserts, northern Grampians, Castlemaine area). Usually growing on alluvium or sand in areas prone to inundation.
See note under W. planiflora.
Walsh, N.G. (1999). Wahlenbergia. In: Walsh, N.G.; Entwisle, T.J., Flora of Victoria Vol. 4, Cornaceae to Asteraceae, pp. 554–563. Inkata Press, Melbourne.