Orianthera
C.S.P.Foster & B.J.ConnHerbs or subshrubs. Leaves opposite, sometimes much reduced, petiolate or sessile; stipules interpetiolar, entire, membranous. Inflorescence terminal but often appearing axillary when borne on short lateral shoots, variously cymose, 1–15-flowered. Flowers bisexual, 5-merous; ovary superior; calyx deeply divided, lobes acute, margin membranous; corolla campanulate, white (in Victoria) or yellow, lobes imbricate in bud, finally spreading, obtuse to rounded; stamens inserted at sinus between corolla lobes, filaments shorter than anthers, not exceeding corolla; lobes; ovaries 2-locular, with up to 10 ovules per locule; stigma capitate or bilobed. Fruit a septicidal capsule, with 2 carpels almost completely separating, usually black, woody; seeds virtually smooth to papillate.
13 species, endemic to Australia, occurring in all States except Qld and Tas.
Segregated from Logania on molecular and morphological evidence (Foster et al., 2014 a,b)
SpinningFoster, C.S.P.; Conn, B.J.; Henwood, M.J.; Ho, S.Y.W. (2014b). Molecular data support Orianthera: a new genus of Australian Loganiaceae. Telopea 16: 149–158.
Foster, C.S.P; Ho, S.Y.W; Conn, B.J.; Henwood, M.J. (2014a). Molecular systematics and biogeography of Logania R.Br. (Loganiaceae). Molecular Phylogenetics and Evolution 78: 324–333.
