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

Family: Sterculiaceae
Rulingia

Citation: R. Br., Curtis's Bot. Mag. 48:t. 2191 (1820).

Synonymy: Not Applicable

Common name: None

Description:
Woody evergreen shrubs, densely simple- and/or stellate-hairy on the leaves and branches; leaves with caducous or moderately persistent narrow brown stipules, with pinnate venation, entire to lobed, subsessile or shortly petiolate.

Flowers bisexual, in several-flowered axillary or terminal cymes; bracts caducous, inconspicuous except for one at the base of the flower (?epicalyx) which is much enlarged in some species; calyx petaloid, 5-lobed; petals 5, shorter than the sepals, with the lower margins incurved to embrace the anthers and an upper flat ligulate portion; stamens 5, free, short, opposite the petals, extrorse; staminodes 5, simple, longer than the stamens; ovary sessile, 5-celled, with 2 or 3 ovules in each cell, papillose to tomentose; styles 5, erect, more or less connate, each terminating in a small capitate stigma.

Capsule usually hairy, opening loculicidally in 5 valves; seeds 1 or 2 in each cell, with fleshy albumen, inferior radicle and flat cotyledons.

Distribution:  About 20 species endemic to Australia.

Biology: No text

Key to Species:
1. Calyx 2-6 mm long, white or yellow
 
2. Calyx 5-6 mm long; leaves 2-5 mm broad, linear-oblong, sessile or subsessile
R. craurophylla 1.
2. Calyx 2-3 mm long; leaves 8-20 mm broad, oblong-lanceolate to ovate, on petioles 2-10 mm long
R. loxophylla 2.
1. Calyx 9-12 mm long, pinkish
R. magniflora 3.

Author: Not yet available


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