e-Key <span id="jodit_selection_marker_1707207814574_6415292548936093" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>v3 - Ber<span id="jodit_selection_marker_1707207814574_5177494944451353" data-jodit_selection_marker="end" style="line-height: 0; display: none;"></span>zelia
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Bruniaceae - Berzelia Brongn.

Description:

  • Erect shrubs to rarely small trees, some with coppice shoots sprouting from lignotubers
  • Leaves linear or seldom broadly ovate; petiolate, soft-textured and easily bent at base; dark stipules present; bud leaf colleter a papilla becoming an apiculus, then shrivelling to a black cone or lost
  • Flowers borne in dense, spherical to very rarely elongate capitula with a narrowly elliptic to broadly clavate receptacle; flowers in each capitulum 80-130; capitula usually in a corymbose panicle; involucral bracts usually ovate to elliptic, mostly with adnate stipules; floral bracts narrowly elliptic to spathulate, usually without stipules; bracteoles 2; floral receptacle with rounded to angular ribs passing down from the sepals
  • Calyx: sepals free, often linear, sometimes broadly oblong, with a dark apiculus
  • Corolla white to pale cream or bright red, regular or irregular in lower flowers; petals oblong to narrowly lanceolate or clawed, basally with an adaxial crest; petal margins often with flaps partly enclosing the filaments and lightly adnate to them, forming a tube
  • Stamens: immature filaments often arched; anther thecae united or partly free and slightly to strongly divergent; pollen grains tricolporate
  • Nectary apparently 0; nectar rarely present at base of flower; scent usually 0, rarely faint or coffee-like or fishy
  • Ovary half- to three-quarters-inferior, locules 1 or 2, locules 2 in some peloric flowers, wall between locules often incomplete; ovule 1, rarely 0 or 2 per locule, or ovules sterile as dark flakes in spongy tissue filling locule; styles terete, when 2 then often divergent, stigmas terminal
  • Fruit comprising expanded ovary wall and attached persistent flower parts, mostly indehiscent, where not so, valves 2-4 and spreading
  • Seeds usually ellipsoid
  • x = 10 (aneuploids, high polyploidy)

Nomenclature:

  • Berzelia Brongn.
    • Brongniart: 370, t. 35 fig. 1 (1826)
    • Sonder: 310 (1862)
    • Pillans: 186 (1947)

Distribution & Notes:

  • Southern Africa: Species 8, Western to Eastern Cape, mainly in the southwestern mountains and flats

References:

  • BRONGNIART, A. 1826. Mémoire sur la famille des Bruniacées. Annales Sciences Naturelles 8
  • PILLANS, N.S. 1947. A revision of Bruniaceae. Journal of South African Botany 13
  • SONDER, O.W. 1862. Bruniaceae. Flora capensis 2