Plants of South Eastern New South Wales

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Hibiscus richardsonii

Common name

Flower-of-an-hour, Bladder ketmia

Family

Malvaceae

Where found

Open dry forest and woodland, disturbed sites, or fringing saline mud flats. Coastal north from Tathra.

Notes

Herb to 1 m tall. Branchlets with stellate hairs (needs a hand lens or a macro app on your phone/tablet to see) and sparse coarse and fine bristles. Leaves alternating up the stems. Mid-stem and upper leaves 3-lobed (rarely unlobed or 5- or 7- lobed), 2-6.5 cm long, 15-45 mm wide, stellate hairy, margins toothed, tips of the lobes pointed or blunt. Flowers with 5 petals 19-26 mm long, yellow, the bases faintly flushed pink, sometimes with faint red striations.

Was included in Hibiscus trionum.

Description and photo in: Craven, L.A., de Lange, P.J., Lally, T.R., Murray, B.G. & Johnson, S.B., (2011) A taxonomic re-evaluation of Hibiscus trionum (Malvaceae) in Australasia. New Zealand Journal of Botany 49(1): 30-34, Figs 1A, 2A, 3