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

Family: Dilleniaceae

Citation: Andrews, Bot. Rep. 2:t. 126 (1800).

Derivation: After George Hibbert, London merchant and patron of botany, 1757-1837.

Synonymy: Not Applicable

Common name: Guineaflowers.

Small shrubs; leaves small, alternate, almost sessile.

Fruiting carpels enclosed in the calyx, opening along the inner suture; seeds ovoid or subglobular, usually reddish-brown, shining, more or less enclosed in the aril which is often jagged or fringed.

Distribution:  About 110 species, mostly Australian but also in Madagascar, New Guinea and New Caledonia. The South Australian species are in great need of revision (probably more so than any other major genus) and this treatment is very provisional.

Biology: No text

Key to Species:
1. Stamens 4-16, on one side of the 2 almost always pubescent carpels
2. Sepals pubescent (often stellately so) or glabrous; flowers usually distinctly pedunculate
3. Leaves needle-pointed at least when young
4. Flowers pedunculate
H. acicularis 1.
4. Flowers sessile or subsessile
H. exutiacies 4.
3. Leaves more or less obtuse
5. Leaves elliptic to obovate, rarely linear-oblong, margins not recurred or if so with a narrow midrib; flowers on peduncles at least 5 mm long, although broad-leafed plants may have subsessile flowers
6. Leaves usually oblanceolate to obovate, 2-8 mm broad
H. aspera 2.
6. Leaves linear-oblong, 2-2.5 mm broad
H. stricta 10.
5. Leaves more or less linear, margins recurved to a broad midrib; flowers usually sessile or subsessile
H. riparia 8.
2. Sepals silky or villous; flowers sessile
7. Leaves villous, to c. 1 mm broad
H. paeninsularis 6.
7. Leaves scabrid or stellate-pubescent, 2 mm or more broad
H. sericea 9.
1. Stamens 8-150, placed all round the 3 glabrous carpels
8. Peduncles 1-3 cm long; stamens 100-150
H. glaberrima 5.
8. Peduncles usually 0; stamens 8-35
9. Stamens 25-35
H. crispula 3.
9. Stamens 8-12
10. Bracts 2 or 3, about half as long as the calyx . H. virgata 11
10. Bracts 1 or 0, small
H. prostrata 7.

Author: Not yet available

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