e-Key v3 - Ehretia
SANBI Flora Keys Logo
Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Boraginaceae - Ehretioideae - Ehretia P.Browne

Description :

  • Trees or shrubs, variously hairy
  • Leaves alternate or clustered on short side branches, sessile or shortly petiolate, obovate to orbicular, usually with entire margins; variously hairy or if surface glabrous then with hairs densely arranged along margin
  • Flowers white or blue to mauve, bisexual or polygamous, sessile or pedicellate in much branched, axillary or terminal cymose inflorescences, the individual cymules mostly scorpioid
  • Calyx with a shallow tube; lobes 5, lanceolate, hairy outside but glabrous inside
  • Corolla with tube very short or longer than lobes; lobes (4)5(-7), imbricate, oblong, spreading or reflexed
  • Stamens : filaments linear, arising in throat of corolla tube, usually exserted; anthers oblong, lobed at base
  • Ovary 2-locular, 2-ovuled or 4-locular with a single ovule at or above middle of each locule; style terminal, flattened, 2-fid with stigmas capitate
  • Fruit subglobose, drupaceous; with 4 1-seeded stones
  • x = 13, 8 (6, 10) (polyploidy)

Nomenclature:

  • Ehretia P.Browne
    • Browne: 168 (1756)
    • Linnaeus: 936 (1759)
    • Candolle: 502 (1845)
    • Bentham: 840 (1876)
    • Boissier: 124 (1879)
    • Gürke: 87 (1897)
    • Wright: 4 (1904)
    • Taton: 19 (1971)
    • Martins: 75 (1990)
    • Miller: 20 (1991)
    • Verdcourt: 33 (1991)
    • Riedl: 91 (1997)

Distribution & Notes:

  • Global : Species ± 75, in the tropics of both Old and New World, particularly in Africa and Asia, a few in tropical America and West Indies
  • Southern Africa : Species 3, widespread

References:

  • BENTHAM, G. 1876. Boragineae . In G. Bentham & J.D. Hooker, Genera plantarum 2. Reeve, London
  • BOISSIER, P.E. 1879. Borragineae . Flora orientalis 4. H. Georg, Geneva
  • BROWNE, P. 1756. The civil and natural history of Jamaica . Published by the author, London
  • CANDOLLE, A.P. DE. 1845. Borragineae . Prodromus 9. Treuttel & Würtz, Paris
  • GÜRKE, M. 1897. Borraginaceae . Die natürlichen Pflanzenfamilien 4, 3a
  • LINNAEUS, C. VON. 1759. Systema naturae , edn 10. Laurentius Salvius, Stockholm
  • MARTINS, E.S. 1990. Boraginaceae . Flora zambesiaca 7,4
  • MILLER, J.S. 1991. Boraginaceae . In M.D. Dassanayake, A revised handbook to the flora of Ceylon . Amerind Publishing Co. Pvt. Ltd., New Delhi
  • RIEDL, H. 1997. Boraginaceae . Flora malesiana 13
  • TATON, A. 1971. Boraginaceae . Flore du Congo du Rwanda et du Burundi . Boraginaceae
  • VERDCOURT, B. 1991. Boraginaceae . Flora of tropical East Africa . Boraginaceae
  • WRIGHT, C.H. 1904. Boragineae . Flora capensis 4,2