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Lysiosepalum involucratum (Turcz.) Druce

Rep.Bot.Exch.Club Brit.Isles 4:634 (1917)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status

Dense, compact or spreading shrub, 0.3-1.5 m high. Fl. blue-purple/pink, Aug to Nov. Often on sandy & gravelly soils.

Grazyna Paczkowska, Descriptive Catalogue, 1 October 1996

Scientific Description

Shrub, with hairy stems. Leaves 10-40 mm long, 1.5-5 mm wide, not lobed; margins entire; hairy, with stellate hairswith scales absent, Sessile glands absent; stipules present and persistent to older leaves. Perianth of two whorls but the corolla reduced to small scales or tiny lobes at the base of the ovary. Pedicel present, 5.3-6.8 mm long; indumentum present, with stellate hairs present, with scales absent. Epicalyx (extra segments or 'bracteoles' immediately below the calyx) present, 3.5-5.6 mm long, the lobes free, indumentum present, stellate hairs presentwith scales absent, Sessile glands absent. Calyx pink, blue or purple, 7-13 mm long, the lobes fused less than half their length, Sessile glands absent, simple hairs (without tubercle bases) absent, stellate hairs present, tubercle-based simple hairs absent, gland-tipped hairs absent, scales absent, Terminal appendages absent, number of ribs absent. Corolla 0.5-0.7 mm long, glabrous. Indumentum (outside) Sessile glands absent. Stamens six, free and inserted at the base of the ovary; filaments present, 0.8 mm long; anthers 3.5-4 mm long, indumentum absent (anthers glabrous). Staminodes absent, appendages absent. Ovary hairs or scales present, simple hairs absent, stellate hairs present, gland-tipped hairs absent; style 1, with a lobed or capitate stigma, 2.6-4.3 mm long, with one style branches or lobes, mostly glabrous, wing absent. Flowering time September or October. Distribution Botanical Province South-West, IBRA Bioregion Avon Wheatbelt, Mallee and Esperance.

C. Hollister and K.R. Thiele, 11 August 2023


IBRA Regions
Avon Wheatbelt, Esperance Plains, Mallee.
IBRA Subregions
Fitzgerald, Katanning, Merredin, Western Mallee.
Local Government Areas (LGAs)
Cranbrook, Dumbleyung, Gnowangerup, Jerramungup, Kent, Kulin, Mount Marshall, Narembeen, Ravensthorpe, Westonia.