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Hibbertia horricomis Toelken
Family Dilleniaceae
Hibbertia horricomis Toelken APNI*

Description: Shrub to 0.3 m tall, with rigid-woody branching, erect-spreading. Fascicled hairs on branches dense to very dense, often on prominent pustules.

Linear to linear-elliptic 3.0 - 7.0 mm long x c. 1 mm wide, gradually tapering into petiole, Lower surface with prominent central vein ± flush with and broader than revolute margins. With dense fascicled spreading hairs on prominent pustules on the upper surface, with sparse to scattered fascicled hairs on the lower surface.

Flowers sessile, terminal on major branches; buds broadly ovoid. Petals broadly obovate, 7.5 - 9.5 mm long, emarginate. Stamens 20 - 24, without staminodes, around the ovaries; filaments filiform, 1.2 - 1.4 mm long, scarcely broadened and barely connate at the base; anthers narrowly obloid, 0.9 - 1.2 mm long, abruptly constricted above and below. Carpels 2; ovaries obovoid, each with 4 ovules, hirsute; style attached to apex of ovaries, erect with stigmas well above the stamens. Calyx lobes unequal; outer calyx lobes ovate, 6.8 - 7.3 × 1.5 - 2.2 mm, sometimes slightly longer than inner ones, acute and often with distal margins slightly recurved, slightly ridged towards the apex, outside shortly hirsute to rough pubescent, inside finely pubescent on the distal third; inner calyx lobes broadly ovate-elliptic, 6.7 - 7.3 × 3.2 - 4.3 mm, obtuse to rounded, usually ridged towards the apex, outside hirsute becoming puberulous to glabrous on the membranous margins, inside with fine tuft below the apex.

Fruit and seed not known.

Flowering: June – October

Distribution and occurrence: Confined to rhyolite ridge tops and steep slopes, in Deua National Park.

Often growing above cliffs in open eucalypt forest dominated by E. sieberi.
NSW subdivisions: ST
AVH map***

APNI* Provides a link to the Australian Plant Name Index (hosted by the Australian National Botanic Gardens) for comprehensive bibliographic data
***The AVH map option provides a detailed interactive Australia wide distribution map drawn from collections held by all major Australian herbaria participating in the Australian Virtual Herbarium project.

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