Habit and leaf form. Shrubs; evergreen. Plants rootless (in the normal sense); partially parasitic. On aerial parts of the host. Leaves cauline (ass.). Stem internodes solid (ass.). Stem growth conspicuously sympodial. Mesophytic, or xerophytic. Leaves alternate, or opposite (displaced); leathery, or membranous; petiolate (West Australian species); edgewise to the stem, or with ‘normal’ orientation; simple. Leaf blades entire; pinnately veined (penninerved). Leaves without stipules. Leaf blade margins entire. Leaves without a persistent basal meristem. Leaf anatomy. Extra-floral nectaries absent (ass.). Stem anatomy. Secondary thickening developing from a conventional cambial ring.
Reproductive type, pollination. Fertile flowers hermaphrodite. Unisexual flowers absent. Plants hermaphrodite. Entomophilous, or ornithophilous.
Inflorescence and flower features. Flowers solitary, or aggregated in ‘inflorescences’; in racemes, or in spikes (rarely). The terminal inflorescence unit cymose. Inflorescences axillary; raceme sometimes reduced to 1 or 2 flowers. Flowers pedicellate; bracteate (1 under each flower, much shorter than the flowers); ebracteolate (ass.); regular to somewhat irregular. The floral asymmetry involving the perianth. Flowers cyclic; tetracyclic. Floral receptacle markedly hollowed. Free hypanthium present; adnate to the ovary. Perianth with distinct calyx and corolla; 3–9; 2 -whorled, or 1 -whorled. Calyx present (KPCB), or vestigial (A); 1 -whorled; polysepalous, or gamosepalous; entire, or lobed; when not entire, blunt-lobed, or toothed (or irregularly split); open in bud; regular; persistent. Corolla present (AKPCB), or absent (B); 5; 1 -whorled; gamopetalous; valvate; tubular; unequal but not bilabiate, or bilabiate, or regular; yellow, or red. Androecial members definite in number. Androecium 5. Androecial members adnate (to the corolla); all equal (ass.); free of one another; 1 -whorled. Androecium exclusively of fertile stamens. Stamens 5; all more or less similar in shape (ass.); isomerous with the perianth; alternisepalous (epipetalous). Anthers dorsifixed; non-versatile; dehiscing via longitudinal slits; introrse; bilocular (K), or four locular (A); bisporangiate, or tetrasporangiate. Gynoecium 3 carpelled, or 4 carpelled. The pistil 1 celled. Gynoecium syncarpous; synstylovarious, or eu-syncarpous; inferior. Ovary unilocular; 1 locular. Gynoecium stylate. Styles 1; apical. Stigmas 1. Ovules not differentiated; in the single cavity 1–20 (1 or several); sessile; ascending; non-arillate; not clearly differentiated from the placenta.
Fruit and seed features. Fruit fleshy (usually), or non-fleshy (rarely); indehiscent; a berry, or a drupe; 1 seeded. Seeds copiously endospermic. Endosperm oily. Seeds covered with viscous material; without a testa. Embryo well differentiated. Cotyledons 2, or 1.
Etymology. From the Greek for "tree" and "to corrupt, destroy"; refers to the parasitic nature of the plant.
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/