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

Acanthaceae - Acanthoideae - Justicieae - Odontoneminae - X Ruttyruspolia A.Meeuse & De Wet

Description :

  • The essential difference between Ruttya and Ruspolia , is a 2-lipped corolla in Ruttya with a short broad tube widening gradually to the throat and in Ruspolia a subequally 5-lobed corolla with a narrowly cylindric tube
  • Both the wild and artificial hybrids have most of the morphological characters of the Ruspolia parent:
    • Subshrubs
    • Leaves shortly petiolate
    • Inflorescence terminal thyrses; bracts and bracteoles present
    • Calyx regular, hairy, sometimes glandular; lobes 5; tube shorter than lobes
    • Corolla: subequally 5-lobed corolla with a narrowly cylindric tube
    • Androecium : fertile stamens 2; arising in throat of corolla, exserted; filaments linear; anthers monothecous; thecae muticous; staminodes 2
    • Pollen prolate, 3-colporate, with pseudocolpi; surface reticulate
    • Disc shallowly cupular
    • Gynoecium : ovary with 2 ovules in each locule; style filiform, exserted; style branches 2, equal, very short, broader than long
    • Capsule club-shaped, stipitate, with inelastic placental bases
    • Seeds semi-orbicular, compressed, with somewhat horny margin, smooth on outer surface, rough and convoluted or rugose on inner surface

Nomenclature:

  • X Ruttyruspolia A.Meeuse & De Wet
    • Meeuse & De Wet: 439 (1961)

Distribution & Notes:

  • Southern Africa : Only from Soutpansberg (Northern Province), X Ruttyruspolia 'Phyllis van Heerden' A.Meeuse & De Wet

References:

  • MEEUSE, A.D.J. & DE WET, J.M.J. 1961. Ruttyruspolia , a natural intergeneric hybrid in Acanthaceae . Bothalia 7,3