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(Subfamily Byttnerioideae), Tribe Lasiopetalae.
Habit and leaf form. Shrubs; non-laticiferous and without coloured juice. ‘Normal’ plants. Leaves well developed. Plants with roots; non-succulent. Leaves cauline. To 0.5–1.5 m high. Self supporting. Mesophytic. Not heterophyllous. Leaves small, or medium-sized; alternate; distichous; with blades; petiolate. Petioles wingless. Leaves with ‘normal’ orientation; simple; not peltate. Leaf blades neither inverted nor twisted through 90 degrees; dorsiventral; entire; flat; linear, or ovate; pinnately veined; cross-venulate; cordate, or rounded at the base (or obtuse). Mature leaf blades adaxially pubescent (densely stellate hairy); abaxially pubescent (densely stellate hairy). Leaves with stipules. Stipules intrapetiolar; free of the petiole; free of one another; spiny; caducous (usually), or persistent. Leaf blade margins entire, or serrate, or dentate. Leaf anatomy. Hairs present; complex hairs present. Complex hairs stellate.
Reproductive type, pollination. Fertile flowers hermaphrodite. Unisexual flowers absent. Plants hermaphrodite. Plants homostylous.
Inflorescence and flower features. Flowers aggregated in ‘inflorescences’, or solitary; not crowded at the stem bases. Inflorescence few-flowered. Flowers in cymes. Inflorescences simple; terminal (or opposite the upper leaves). Flowers pedicellate (, pedicels articulate near middle in K. velutina); ebracteate; bracteolate; small; regular; not resupinate; neither papilionaceous or pseudo-papilionaceous; 4 merous, or 5 merous; cyclic; tricyclic, or tetracyclic (usually). Floral receptacle with neither androphore nor gynophore. Perianth with distinct calyx and corolla; 4, or 5, or 10; 1 -whorled, or 2 -whorled; isomerous. Calyx present; 4, or 5; 1 -whorled; gamosepalous; lobed. Calyx lobes markedly shorter than the tube. Calyx hairy (densely stellate hairy); valvate; exceeding the corolla (when corolla is present); broad; regular; neither appendaged nor spurred; pink, or purple. Epicalyx absent. Corolla vestigial, or absent; 5 (scale-like when present); 0 -whorled, or 1 -whorled. Androecium present. Fertile stamens present. Androecial members definite in number. Androecium 5–10. Androecial members free of the perianth; free of the gynoecium; markedly unequal; free of one another, or coherent (stamens and staminodes shortly connate at the base into staminal tube); 1 - adelphous; 1 -whorled. Androecium exclusively of fertile stamens, or including staminodes. Staminodes 5 (when present); non-petaloid. Stamens 5; all more or less similar in shape; isomerous with the perianth; alternisepalous; filantherous. Anthers separate from one another; all alike; dehiscing via longitudinal slits; bilocular. Fertile gynoecium present. Gynoecium 3–5 carpelled. The pistil 3–5 celled. Carpels reduced in number relative to the perianth, or isomerous with the perianth. Gynoecium syncarpous; synovarious, or synstylovarious, or eu-syncarpous; superior. Ovary plurilocular; 3–5 locular; subsessile. Ovary summit glabrous, or hairy, the hairs not confined to radiating bands. Gynoecium stylate. Styles 3–5; free, or partially joined; simple; apical. Placentation axile.
Fruit and seed features. Fruit hairy, or not hairy; a schizocarp. Dispersal unit the seed. Fruit 3–5 seeded. Seeds 1 per locule.
Geography, cytology, number of species. Native of Australia. Endemic to Australia. Australian states and territories: Western Australia and Northern Territory. Northern Botanical Province. A genus of ca 8 species; 5 species in Western Australia; ca 1 endemic to Western Australia.
Additional comments. Named after P.F. Keraudren, 1769–1851, a French naturalist.