Habit and leaf form. Herbs, or shrubs; evergreen. Plants succulent. Herbs annual to perennial; plants with a basal concentration of leaves, or with neither basal nor terminal concentrations of leaves. Xerophytic, or mesophytic, or hydrophytic. Leaves opposite; fleshy; petiolate to sessile; simple, or compound; peltate, or not peltate; when compound, ternate, or pinnate. Leaflets 3, or 5. Leaf blades when simple, entire, or dissected; flat (more or less); when dissected, deeply lobed; one-veined, or pinnately veined; cross-venulate, or without cross-venules. Leaves without stipules. Leaf blade margins entire, or crenate, or serrate. Leaves without a persistent basal meristem. Leaf anatomy. Hydathodes present. Stem anatomy. Nodes unilacunar, or tri-lacunar. Secondary thickening developing from a conventional cambial ring.
Reproductive type, pollination. Fertile flowers hermaphrodite. Unisexual flowers absent. Plants hermaphrodite. Floral nectaries present. Nectar secretion seemingly from the gynoecium (each carpel with a nectariferous scale-like appendage abaxially near the base). Entomophilous.
Inflorescence and flower features. Flowers aggregated in ‘inflorescences’; in cymes. Inflorescences simple, or compound (often arranged in panicles or corymbs). The terminal inflorescence unit cymose. Inflorescences terminal. Flowers small to medium-sized; regular; 4 merous; cyclic; pentacyclic. Floral receptacle not markedly hollowed. Free hypanthium present, or absent. Hypogynous disk seemingly absent (i.e. the nectariferous appendages being interpreted as gynoecial). Perianth with distinct calyx and corolla; 8; 2 -whorled; isomerous. Calyx 4; 1 -whorled; gamosepalous (basally); imbricate; regular; persistent. Corolla 4; 1 -whorled; gamopetalous (petals connate in a tube for more than half their length); imbricate; regular; yellow to orange; persistent (and becoming twisted after anthesis). Androecium 8. Androecial members adnate (to the corolla); free of one another; 2 -whorled. Androecium exclusively of fertile stamens. Stamens 8; inserted at markedly different levels; diplostemonous; alternisepalous. Anthers more or less basifixed; non-versatile; dehiscing via longitudinal slits; latrorse, or introrse; bilocular; tetrasporangiate. Gynoecium 4 carpelled. Carpels isomerous with the perianth. Gynoecium apocarpous, or syncarpous; eu-apocarpous, or semicarpous (when the carpels slightly united at the base); superior. Carpel apically stigmatic; 20–50 ovuled (i.e. ‘numerous’). Placentation (sub) marginal. Stigmas wet type; papillate; Group III type. Ovules pendulous to horizontal; biseriate; non-arillate; anatropous.
Fruit and seed features. Fruit non-fleshy; an aggregate. The fruiting carpels not coalescing. The fruiting carpel dehiscent; a follicle (enclosed in withered calyx and corolla). Fruit numerous-seeded. Seeds endospermic. Endosperm oily. Cotyledons 2. Embryo straight. Seedling. Germination phanerocotylar.
Physiology, biochemistry. Aluminium accumulation not found. Photosynthetic pathway: CAM.
Geography, cytology, number of species. Native of Australia. Not endemic to Australia. Australian states and territories: Western Australia. Northern Botanical Province.
Additional characters Corolla lobes spreading (or recurved).
Wheeler, J. R.; Rye, B. L.; Koch, B. L.; Wilson, A. J. G.; Western Australian Herbarium (1992). Flora of the Kimberley region. Western Australian Herbarium. Como, W.A.
Publication or other use of content on this site is unauthorised unless that use conforms with the copyright statement.