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Scale bar 10mm. Copyright CSIRO
Cotyledon stage, epigeal germination. Copyright CSIRO
Flowers. Copyright CSIRO
10th leaf stage. Copyright CSIRO
Hibiscus tozerensis Craven & B.E.Pfeil
Craven, L.A. & Pfeil, B.E. (2004) Adansonia 2692): 238. Type: ?.
Macrostelia grandifolia Fryxell subsp. grandifolia, Australian Journal of Botany 22(1): 191(1974), Type: ?. Macrostelia grandifolia Fryxell, Australian Journal of Botany 22(1): 189(1974), Type: Queensland, Tozer Range, 28 June 1948, L. J. Brass 19353; holo BRI; iso: A.
Iron Range hibiscus; Hibiscus, Iron Range
Grows into a small tree but also flowers and fruits as a shrub 2-4 m tall.
Both the upper and lower surfaces of the leaf blade, petioles and twigs clothed in stellate hairs, sometimes sparsely. Leaf blades have a rough texture but not abrasive enough to be classed as sandpapery. Stipules linear, filiform, about 0.4-1 cm long, clothed in stellate hairs. Leaf blades about 12.5-17 x 4-5 cm, petioles about 0.4-0.6 cm long. Lateral veins looping inside the blade margin. Twig bark clothed in stellate hairs, strong and fibrous when stripped.
Pedicel about 10-50 mm long. Epicalyx segments fused to form a tube about 6-8 mm long, apex about 3-5-lobed. Calyx campanulate, about 12-15 mm long, outer surface densely clothed in stellate hairs and scales. Petals mainly cream, about 18-22 mm long. Stamens about 20, anthers horseshoe-shaped with the line of dehiscence on the outer periphery. Filaments attached to the middle of each anther.
Capsules subglobose, about 10-15 x 12-14 mm. Calyx and epicalyx persistent at the base of the fruit. Seeds about 15 per fruit, each seed about 5 mm long, clothed in white simple hairs. Cotyledons folded, radicle about 2 mm long.
Cotyledons about 12-13.5 x 15-18.5 mm, petioles about 4-6 mm long. First pair of true leaves about 30-32 x 11-13 mm, petioles about 2-4 mm long, stellate hairs usually visible on one or both leaf surfaces. Margin often obscurely toothed. Stipules 2-3 mm long, difficult to discern among the stellate hairs. At the tenth leaf stage: leaf blade obovate, apex apiculate, base cordate, both the upper and lower surfaces of the leaf blade clothed in short stellate hairs. Stipules linear, about 5-6 mm long, clothed in stellate hairs. Twigs clothed in stellate hairs.
Distribution and Ecology
Shrub (woody or herbaceous, 1-6 m tall)