Description: Trees, shrubs, woody climbers or herbs; stipules interpetiolar, often reduced to a stipular line, sometimes intrapetiolar.
Leaves usually decussate, simple; margins ± entire.
Inflorescence cymose, sometimes reduced and 1-flowered. Flowers actinomorphic, usually bisexual, or if unisexual then plants dioecious; 5-merous or sometimes 4-merous. Calyx united or free. Corolla united, usually whitish, cream-coloured to yellowish, usually fragrant (sometimes unpleasantly so); lobes valvate, imbricate or contorted in bud. Stamens same number as corolla lobes, inserted on corolla tube; anthers 2-locular, usually basifixed, dehiscence introrse by longitudinal slits. Ovary superior or rarely semi-inferior, 2-locular; ovules 1–many; style usually 1 or rarely 2 (Mitrasacme).
Fruit capsular, berry-like or drupaceous; seeds 1–many.
Distribution and occurrence: World: c. 22 genera, c. 349 species, tropical & subtropical, with a few extending to warm temperate regions. Australia: 7 genera, c. 75 species, all States.
Angiosperm Phylogeny Website (Family: Loganiaceae, Order: Gentianales)
Text by B. J. Conn
| ||Key to the genera|| |
|Trees, shrubs or woody climber||3|
|2||Styles 2, only fused apically; flowers 4-merous; capsule loculicidal, 2-horned apically||Mitrasacme|
|Style 1; flowers 5-merous; capsule septicidal, lacking distal horns|
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|3||Woody climber; sepals free at base||Gelsemium|
|Shrub or small tree; sepals fused|
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|4||Leaves with 3–5 more or less longitudinal veins from base; axillary spines usually present; trees||Strychnos|
|Leaves penniveined; spines absent; herbs or undershrubs|
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