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

Acanthaceae - Acanthoideae - Acantheae - Sclerochiton Harv.

Description :

  • Subshrubs, sometimes diffuse and scrambling
  • Leaves ± anisophyllous, entire or rarely dentate
  • Inflorescence terminal, spicate, sometimes reduced; bracts ovate or 0; bracteoles 2, ovate, shorter than calyx
  • Calyx regular; lobes 5, sometimes unequal, sometimes chartaceous and ribbed, with 2 outer segments sometimes bifid at apex; tube shorter than lobes
  • Corolla 1-lipped; lobes 5, oblong; aestivation imbricate; tube shorter than lobes
  • Androecium : fertile stamens 4, equal or subequal, arising in middle of corolla tube, exserted; filaments broadly linear; anthers monothecous; theca ciliate, muticous; staminodes 0
  • Pollen prolate, 3-colpate; surface with shallow reticulations
  • Disc annular
  • Gynoecium : ovary ellipsoid, swollen at base, with 1 or 2 ovules in each locule, with large sessile glands near tip; style linear, exserted; style branches 2, equal, cylindriform
  • Capsule woody, ellipsoid, estipitate, with inelastic placental bases
  • Seeds oblong, flattened, oblique at base, without hygroscopic hairs; surface rough and convolute or rugose
  • x = 6 or 7 (1 report, polyploidy)

Nomenclature:

  • Sclerochiton Harv.
    • Harvey: 27 (1842)
    • Hilliard & Burtt: 109 (1970)
    • Vollesen: 1 (1991)

Distribution & Notes:

  • Global : Species ± 12, Africa
  • Southern Africa : Species 6, Swaziland and northern and eastern provinces of South Africa

References:

  • HARVEY, W.H. 1842. Descriptions of several new genera of South African plants. London Journal of Botany 1
  • HILLIARD, O.M. & BURTT, B.L. 1970. Notes on some plants of southern Africa chiefly from Natal. Notes from the Royal Botanic Garden Edinburgh 30
  • VOLLESEN, K. 1991. A revision of the African genus Sclerochiton ( Acanthaceae : Acantheae ). Kew Bulletin 46