Electronic Flora of South Australia
Electronic Flora of South Australia
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Electronic Flora of South Australia genus Fact Sheet

Family: Euphorbiaceae

Citation: Gaudich., Annls Sci. nat. 5:223 (1825).

Derivation: After the celebrated French botanist Adrien de Jussieu, 1797-1853.

Synonymy: Not Applicable

Common name: Bitterbushes.

Erect shrubs, glabrous or stellate-tomentose, often glandular; dioecious; leaves alternate or opposite, coarsely toothed sometimes trilobed; stipules replaced by nectariferous glands.

Flowers in terminal spikes, without petals or any glands; the male flowers in rather long bracteate spikes, sessile in clusters of 3-6 in the axils of ovate or lanceolate bracts, perianths globular and closed in bud, opening in 4 rarely 5 valvate segments; stamens numerous, crowded on a slightly raised receptacle without any rudimentary ovary, with very short filaments and linear 2-celled anthers terminating in an erect appendage, the cells adnate, parallel, dehiscent longitudinally in 2 valves; the females in shorter few- to several-flowered spikes, calyx of 5-8 imbricate sepals in about 2 rows; ovary 3-celled, with 1 ovule in each cell; styles 3, mostly 2-fid, free or shortly united towards the base, densely covered or fringed with much raised linear papillae.

Capsule ovoid, separating into 3 2-valved fruitlets; seeds ovoid, carunculate terminally; testa crustaceous; albumen copious; cotyledons flat, much broader than the radicle.

Distribution:  An Australian genus of 6 species.

Biology: No text

Taxonomic notes: The species are very closely allied to each other and might easily be reduced to varieties of 2 or even 1 species (Bentham (1873) Flora Australiensis 6:133).

Key to Species:
1. Leaves petiolate, alternate, often 3-lobed
A. hookeri 1.
1. Leaves sessile or almost so, opposite
2. Leaves stellate-tomentose beneath
A. klotzschii 2.
2. Plant and leaves wholly glabrous
A. quadripartita 3.

Author: Not yet available

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