This name is not current. Find out more information on related names.
Habit and leaf form. Small herbs; bearing essential oils, or without essential oils (?); resinous, or not resinous (?). Annual; plants with a basal concentration of leaves, or with neither basal nor terminal concentrations of leaves (?). Helophytic. Leaves small to large (?); alternate; somewhat fleshy; petiolate; more or less sheathing. Leaf sheaths with free margins. Leaves gland-dotted, or not gland-dotted (?); aromatic, or foetid, or without marked odour (?); simple; pulvinate, or epulvinate (?). Leaf blades entire; obovate; pinnately veined; cuneate at the base. Leaves with stipules. Stipules 2, free. Leaf blade margins dentate. Leaves without a persistent basal meristem. Leaf anatomy. Hairs absent. Stem anatomy. Nodes multilacunar, or tri-lacunar (?). Secondary thickening developing from a conventional cambial ring, or anomalous (?); from a single cambial ring.
Reproductive type, pollination. Fertile flowers hermaphrodite. Unisexual flowers absent. Plants hermaphrodite (usually). Entomophilous.
Inflorescence and flower features. Flowers aggregated in ‘inflorescences’; in umbels, or in heads (by contraction of the umbel). Inflorescences simple. The terminal inflorescence unit cymose, or racemose (?). Inflorescences terminal; with involucral bracts, or without involucral bracts (?). Flowers sessile; bracteate; small; regular to somewhat irregular (?); 5 merous (except for the gynoecium); cyclic; tetracyclic. Free hypanthium absent. Perianth with distinct calyx and corolla (but the calyx reduced to a ring), or petaline (calyx teeth lacking); 5, or 10; 2 -whorled, or 1 -whorled; isomerous; white. Calyx present to vestigial, or absent; when detectable, 5; 1 -whorled; gamosepalous. Corolla 5; 1 -whorled; polypetalous; slightly imbricate; unequal but not bilabiate, or regular; white. Corolla members entire (apex blunt). Androecium 5. Androecial members free of the perianth; all equal to markedly unequal (?); free of one another; 1 -whorled. Androecium exclusively of fertile stamens. Stamens 5; isomerous with the perianth; oppositisepalous; inflexed in bud. Anthers dehiscing via longitudinal slits; introrse; tetrasporangiate. Gynoecium 2 carpelled. The pistil 2 celled. Gynoecium syncarpous; synovarious; inferior. Ovary plurilocular; 2 locular. Gynoecium median. Epigynous disk present. Gynoecium stylate. Styles 2; free to partially joined (their bases thickened into one or two stylopodes crowning the ovary); apical. Stigmas wet type; non-papillate; Group IV type. Placentation axile, or apical (?). Ovules 1 per locule, or 2 per locule (usually two, but one abortive ?); pendulous; epitropous; non-arillate; anatropous.
Fruit and seed features. Fruit non-fleshy; spinose (with short, glochidiate bristles); a schizocarp. Mericarps 2 (5-ribbed, dorsal and intermediate ribs prominent). Seeds endospermic. Endosperm oily. Embryo well differentiated. Cotyledons 2. Embryo achlorophyllous; straight. Seedling. Germination phanerocotylar.
Physiology, biochemistry. Aluminium accumulation not found. Photosynthetic pathway: C3.
Geography, cytology, number of species. Native of Australia. Endemic to Australia. Australian states and territories: Western Australia and South Australia.
FloraBase is produced by the staff of the Western Australian Herbarium, Biodiversity and Conservation Science, Department of Biodiversity, Conservation and Attractions. Publication or other use of content on this site is unauthorised unless that use conforms with the copyright statement.
Western Australian Herbarium (1998–). FloraBase—the Western Australian Flora. Department of Biodiversity, Conservation and Attractions. https://florabase.dpaw.wa.gov.au/