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Electronic Flora of South Australia genus Fact Sheet

Family: Malvaceae
Lawrencia

Citation: Hook., Hook. Ic. 3:tt. 261,262 (1840).

Derivation: After R. W. Lawrence, 1807-33, a botanical collector who lived in Tasmania.

Synonymy: Wrenciala A. Gray, U.S. Expl. Exped. 15:180 (1854); Selenothamnus Melville, Kew Bull 20:514 (1967); Halothamnus F. Muell., Fl. Indig. Col. Vic. 1:158 (1862), nom. illegit. 12 species, all Australian. (Lander (1984) Nuytsia 5:201-271).

Common name: None

Description:
Perennial herbs often woody at least at the base, rarely small shrubs, usually with stellate hairs or peltate scales; leaves alternate or fascicled, usually toothed, sometimes scale-like.

Flowers bisexual or unisexual and the plants dioecious, sessile or pedunculate in the axils of leaves or forming dense spikes, small; epicalyx 0; sepals fused to form a campanulate calyx with 5 teeth or lobes; petals 5, not much exceeding the calyx, white or green to yellow; staminal tube short, adnate to the corolla; stamens 10-20; carpels 2-7, in a single whorl; stigmas 2-7, decurrent on the style branches which are less than half fused and filiform to narrowly clavate but not clearly expanded at the very tip.

Fruit of 3-7 mericarps separating from the slender axis, with hyaline walls with reticulate thickening, indehiscent; seeds 1 in each cell, pendulous.

Biology: No text

Key to Species:
1. Leaves alternate
 
2. Flowers long-pedunculate; petals white
L. berthae 1.
2. Flowers sessile; petals greenish or yellowish
 
3. Leaves petiolate
L. glomerata 2.
3. Leaves sessile or tapering to indistinct petioles
L. spicata 3.
1. Leaves fascicled at least above
L. squamata 4.

Author: Not yet available


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