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Geniostoma rupestre var. australianum

Family

Loganiaceae

Botanical Name

Geniostoma rupestre var. australianum (F.Muell.) B.J.Conn

Conn, B.J. (1980) Blumea 26: 297. Type: ?.

Synonyms

Geniostoma australianum F.Muell., Fragmenta Phytographiae Australiae 5: 19(1865), Type: Queensland, Seaview Range, J. Dallachy s.n.; holo: MEL; iso: GH, K. US. Fide Conn (1996).

Stem

Occasionally grows into a small tree but usually flowers and fruits as a single-stemmed shrub 2-4 m tall.

Leaves

Leaf blade 6-10 x 2-3 cm. Stipules interpetiolar, thin and papery, attached to the bases of the petioles, falling early, leaving only an indistinct scar.

Flowers

Flowers produce an obnoxious odour. Calyx lobes ciliate. Corolla campanulate, about 2.5-4 mm long, corolla tube very hairy on the inner surface. Pollen white. Ovules numerous in each locule, partly embedded in the fleshy placenta. Style about 0.6-2 mm long, lower half hairy.

Fruit

Capsules about 5-10 x 3-7 mm. Seeds about 75-80 per fruit, each seed about 1.5 x 1 mm, testa rugose. Seeds completely embedded in the yellow to orange placenta. Embryo minute, about 0.8 mm long.

Seedlings

Cotyledons almost orbicular, about 2-3 mm diam. First pair of true leaves with hairy margins. At the tenth leaf stage: leaves lanceolate, stipules interpetiolar, thin and papery, attached to the bases of the petioles. Lateral veins forming loops inside the blade margin.

Distribution and Ecology

Occurs in CYP, NEQ and southwards to coastal central Queensland. Altitudinal range from near sea level to about 1000 m. Grows as an understory plant in a variety of types of well developed lowland, upland and mountain rain forest.

Natural History

This species may have medicinal properties. (http://squid2.laughingsquid.net/hosts/herbweb.com /herbage/A11816.htm)

CYP

X

NEQ

X

Shrub (woody or herbaceous, 1-6 m tall)

X

RFK Code

3109