e-Key v<span id="jodit_selection_marker_1707198904630_7460219652655597" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>3 - *Bacc<span id="jodit_selection_marker_1707198904630_17158976358679467" data-jodit_selection_marker="end" style="line-height: 0; display: none;"></span>haris
SANBI Flora Keys Logo
Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Asteraceae - Astereae - *Baccharis L.

Description:

  • Usually viscid shrubs or subshrubs, sometimes small trees, generally dioecious or only rarely monoecious
  • Stems or branches commonly striate or angled
  • Leaves alternate, rarely opposite, simple, entire, toothed or lobed, occasionally reduced to scales
  • Capitula discoid or very rarely disciform, small, solitary or in racemes
  • Involucre campanulate or cup-shaped; bracts imbricate, recurved in female plants when fruit mature
  • Receptacle flat or convex, mostly epaleate
  • Male capitula with bisexual functionally male florets; corolla tubular below, campanulate to funnel-shaped above, tube hairy, rarely also glandular, 5-lobed, yellowish white
  • Anthers ecalcarate and ecaudate; with ovate-lanceolate, flat apical appendage
  • Style without papillae, shortly bilobed, not spreading, with sweeping hairs
  • Pappus: 1 row of persistent bristles
  • Floret base with ring-like nectarium
  • Female capitula with filiform female florets only, very rarely with few central bisexual florets as well, pubescent and glandular, apex 5-lobed, greenish white
  • Style without sweeping hairs, 2-lobed, spreading
  • Cypselas cylindrical or spindle-shaped, rarely ovate or elliptic, somewhat compressed, 8-10-(12-)ribbed, glabrous
  • Pappus of accrescent bristles in many rows
  • x = 9 (5 - 1 report) (aneuploids, B-chromosomes, polyploidy)

Nomenclature:

  • *Baccharis L.
    • Linnaeus: 860 (1753)
    • Linnaeus: 370 (1754)
    • Hellwig: 1 (1990)
    • Bremer: 413 (1994)
  • Baccharidastrum Cabrera
    • Cabrera: 175 (1937).
  • Baccharidiopsis Barroso
    • Barroso: 95 (1975)

Distribution & Notes:

  • Global: Species ± 400; South and North America
  • Southern Africa: Species 1: *Baccharis pingraea DC., naturalised, KwaZulu-Natal

References:

  • BARROSO, G..M. 1975. Baccharidiopsis - um gênero novo da substribo Baccharidinae Hoffmann (Tribo Astereae). Sellowia 26
  • BREMER, K. 1994. Asteraceae, cladistics & classification. Timber Press, Portland, Oregon
  • CABRERA, A.L. 1937. Compuestas argentinas nuevas o interesantes...Buenos Aires. Notas del Museo de La Plata 2, Bot. no. 16
  • HELLWIG, F.H. 1990. Die Gattung Baccharis L. (Compositae-Asteraceae) in Chile. Mitteilungen der Botanischen Staatssammlung München 29
  • LINNAEUS, C. VON. 1753. Species plantarum. Laurentius Salvius, Stockholm
  • LINNAEUS, C. VON. 1754. Genera plantarum, edn 5. Laurentius Salvius, Stockholm