Common name: Climbing Twinleaf
Roepera eremaea (Diels) Beier & Thulin APNI* Synonyms: Zygophyllum eremaeum (Diels) Ostenf. APNI*
Description: Subshrub with slender stems, sometimes scrambling through stronger shrubs, and sometimes apparently annual.
Leaflets continuous with petiole, linear, 8–35 mm long, apex often acute to mucronate.
Sepals 4. Petals 4, narrow-oblanceolate, 3–5 mm long, slightly exceeding the sepals, pale yellow. Stamens 8; filaments not winged. Fruiting pedicels c. 5 mm long, reflexed.
Fruit indehiscent, circular in outline, 8–13 mm long, with 4 very thin vertical wings; seed (by abortion) usually 1 per fruit.
Flowering: July–October
Distribution and occurrence: Grows chiefly on calcareous sand and stony red-brown sandy loam, often scrambling into taller shrubs; mainly west of Bourke-Cobar district; collected once in Dundas, Sydney (?stray introduction). Although Flora of NSW 3 (1992) includes western slopes (NWS, CWS, SWS) in the distribution of R. eremaea, collection records suggest this species might be confined to the western and far western plains in NSW. Also in SW Queensland, western Victoria, South Australia, southern Northern Territory and Western Australia.
NSW subdivisions: ?CC, ?NWS, ?CWS, ?SWS, NWP, SWP, NFWP, SFWP
Other Australian states: Qld Vic. S.A. N.T. W.A.
Text by Hj. Eichler (1992); edited KL Wilson (Jan 2014), K.L. Gibbons (Aug2019).
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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