Habit and leaf form. Shrubs (erect, usually single-stemmed at base); evergreen, or deciduous; bearing essential oils. Mesophytic, or xerophytic. Leaves alternate; leathery, or ‘herbaceous’; petiolate; non-sheathing; gland-dotted; aromatic; simple. Leaf blades dissected, or entire; linear, or ovate; when simple/dissected pinnatifid, or much-divided; pinnately veined, or one-veined. Leaves without stipules, or with stipules. Stipules when present, intrapetiolar; represented by glands. Leaf blade margins entire, or crenate, or serrate, or dentate. Leaves without a persistent basal meristem. Leaf anatomy. Hairs present, or absent. 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. Entomophilous.
Inflorescence and flower features. Flowers solitary (may be crowded on short branchlets and appear spike-like); terminal, or axillary; pedicellate; bracteate; small to medium-sized; fragrant; regular, or somewhat irregular. The floral asymmetry when noticeable, involving the perianth and involving the androecium (not K). Flowers 5 merous; cyclic. Floral receptacle developing a gynophore (associated with the disk), or with neither androphore nor gynophore. Free hypanthium absent. Hypogynous disk present; intrastaminal; of separate members. Perianth with distinct calyx and corolla; 10; 2 -whorled; isomerous. Calyx 5; 1 -whorled; gamosepalous; lobed; glabrous, or hairy; imbricate; regular; with the median member posterior. Calyx lobes ovate, or oblong, or elliptic, or triangular. Corolla 5; 1 -whorled; polypetalous, or gamopetalous; imbricate; regular, or unequal but not bilabiate; white, or pink. Androecium 10. Androecial members unbranched, or branched (? by the splitting of simple primordia); free of the perianth, or adnate (staminodes usually connate with the petal claw); all equal, or markedly unequal; free of one another, or coherent (? the filaments usually more or less basally connate); 1 - adelphous, or 3–12 - adelphous; 1 -whorled, or 2 -whorled. Androecium including staminodes. Staminodes 5 (fusiform, apex gland-tipped, glabrous). Stamens 5; isomerous with the perianth; alternisepalous, or oppositisepalous (? when the outer whorl lost); filantherous. Filaments glabrous. Anthers dorsifixed, or basifixed (? more or less); versatile; dehiscing via longitudinal slits; introrse, or latrorse; tetrasporangiate. Gynoecium 5 carpelled. The pistil when syncarpous, 5 celled. Gynoecium syncarpous; synovarious, or synstylovarious, or eu-syncarpous; superior. Ovary plurilocular; when syncarpous, 5 locular. Styles 1, or 3–5; free, or partially joined; apical; persistent; hairless. Stigmas 5 - lobed; capitate (and depressed-globose); wet type, or dry type; papillate, or non-papillate; Group II type, or Group IV type. Placentation when syncarpous, axile. Ovules 1–5(–50) per locule; pendulous to ascending; epitropous; when two or more per cell, collateral, or superposed, or biseriate; arillate, or non-arillate; anatropous, or hemianatropous.
Fruit and seed features. Fruit 4.5–7 mm long; fleshy, or non-fleshy; green, or red, or purple; a schizocarp. Mericarps 5; glabrous, horn short or absent, spreading or erect. Fruit 5 celled. Seeds endospermic, or non-endospermic. Embryo well differentiated. Cotyledons 2. Embryo chlorophyllous, or achlorophyllous; straight, or curved, or bent. Seedling. Germination phanerocotylar, or cryptocotylar.
Physiology, biochemistry. Aluminium accumulation not found. Photosynthetic pathway: C3.
Geography, cytology, number of species. A genus of 8 species.
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/