e-Key v3 - Valerianaceae
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

DICOTYLEDON - ASTERIDAE - DIPSACALES - Valerianaceae

Compiled by W.G. Welman

Description :

  • Annual or perennial herbs, rarely subshrubs, odoriferous
  • Leaves opposite, often radical or crowded at base of stem, with cauline ones few, small or absent; entire, toothed or up to three times pinnatisect; stipules 0
  • Flowers bisexual or unisexual by abortion, irregular, in dichotomous cymes, dense, laxly corymbose or panicled; bracts present; bracteoles usually absent
  • Calyx often small, sometimes obsolete, sometimes enlarging as flowers mature and then variously lobed and lobes sometimes feathery
  • Corolla gamopetalous; limb 5-lobed, equal, oblique or 2-lipped; lobes imbricate; tube often attenuated at base, sometimes gibbous or spurred at base, often widened at throat
  • Stamens 3, arising on corolla tube, alternating with corolla lobes, often exserted; anthers versatile, opening by longitudinal slits
  • Ovary inferior, 3-locular, but 2 locules aborting, only 1 producing a single, pendulous, anatropous, unitegmic ovule; style linear, filiform or terete; stigma divided into 3 short lobes
  • Fruit dry, resembling an achene, crowned with the sometimes enlarged calyx

Nomenclature:

  • Valerianaceae
    • Sonder: 39 (1865) as Valerianeae
    • Kokwaro: 1 (1968)
    • Cannon: 75 (1983)

Distribution & Notes:

  • Global : Genera ± 15, species ± 400, cosmopolitan, especially north temperate regions
  • Southern Africa : Genera 2, species 2

References:

  • CANNON, J.F.M. 1983. Valerianaceae . Flora zambesiaca 7,1
  • KOKWARO, J.O. 1968. Flora of tropical East Africa . Valerianaceae
  • SONDER, W. 1865. Valerianeae . Flora capensis 3

Resources:

  • Valerianaceae genera:
Valeriana Valerianella