Common name: Small-fruited Twinleaf
Roepera humillima (M.Koch ex Tate) Beier & Thulin APNI* Synonyms: Zygophyllum humillimum M.Koch ex Tate APNI*
Description: Small prostrate annual.
Leaflets continuous with the petiole, oblong- to obovate-cuneate, 5–10 mm long, apex emarginate.
Sepals 4. Petals 4, narrow-obovate, 3 mm long, slightly exceeding sepals, yellow. Stamens 8; filaments narrow-winged in lower half. Fruiting pedicels 1–3 mm long, recurved.
Capsule 4-angled, globose to campanulate, 3–4 mm long, apex slightly dome-shaped with a minute membranous appendage forming a slight corner at upper part of each angle; seed 1 per loculus, very smooth, shining, blackish brown.
Flowering: July–September
Distribution and occurrence: Grows on red-brown cracking clay and sandy loam with gypsum; northwest from Louth district, rare. In SW Queensland and NE South Australia.
NSW subdivisions: NFWP
Other Australian states: Qld S.A.
Text by Hj. Eichler (1992); edited KL Wilson (Jan 2014)
Taxon concept: Flora of NSW 3 (1992)
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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