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

Fabaceae - Papilionoideae - Podalyrieae - Stirtonanthus B.-E.van Wyk & A.L.Schutte

Description :

  • Single-stemmed or multi-stemmed shrubs or small trees
  • Leaves simple, flat, obovate to ± orbicular, petiolate, densely tomentose on both surfaces, coriaceous; stipules paired
  • Flowers 2-4(-6), decussate, in axillary, pedunculate inflorescences; bracts sheathing pedicel, sometimes clasping calyx, densely tomentose; bracteoles 0
  • Calyx with base intrusive; upper 2 lobes fused higher up; lateral lobes often coherent with upper lobes or carinal lobe
  • Corolla yellow, longer than calyx, glabrous; standard transversely elliptic, apex emarginate, claw thick, rigid; wing petals oblong to obovate, slightly longer than keel, tips imbricate; keel petals semicircular, rostrate, auriculate, apex obtuse
  • Stamens diadelphous, free almost to the base; anthers slightly dimorphic, 5 + 5, alternately dorsifixed and subbasifixed
  • Ovary 5- or more-ovuled; style slender, slightly upcurved, densely hairy at least on lower half
  • Pod coriaceous, linear to obliquely-oblong, compressed to somewhat inflated, 5-8-seeded, densely sericeous to tomentose
  • Seeds elliptic to obovate in side view, dark green to black or orange-brown to reddish brown

Nomenclature:

  • Stirtonanthus B.-E.van Wyk & A.L.Schutte
    • Van Wyk & Schutte: 67 (1995)
  • Stirtonia B.-E.van Wyk & A.L.Schutte
    • Van Wyk & Schutte: 319 (1994)

Distribution & Notes:

  • Southern Africa : Species 3, Western Cape: mainly in Montagu, Ladismith, Prince Albert and Oudtshoorn Districts

References:

  • VAN WYK, B.-E. & SCHUTTE, A.L. 1994. Stirtonia , a new genus of the tribe Podalyrieae ( Leguminosae ) from South Africa. Nordic Journal of Botany 14
  • VAN WYK, B.-E. & SCHUTTE, A.L. 1995. Stirtonanthus , a new name for Stirtonia ( Leguminosae , tribe Podalyrieae ). Nordic Journal of Botany 15