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

Penaeaceae - Sonderothamnus R.Dahlgren

Description :

  • Shrublets, erect or ascending, sparingly branched; branchlets thickened at nodes, 4-ridged
  • Leaves overlapping, obtuse, entire or upper sometimes denticulate to fimbriate, with a dark, lunulate or poriferous apical spot or wart
  • Flowers in small, lateral cymes and a single, terminal one; cymes and individual flowers (except terminal) 2-bracteate; bracts somewhat fimbriate and with hyaline margin and a dark, apical wart or areola; lower bracts larger than adjacent leaves
  • Perianth : tube narrowly cylindric, 7-12 mm long; lobes ovate or broadly lanceolate, acute, with reduplicate aestivation; purple or partly rose
  • Stamens : filaments 0.1-0.3 mm long; anthers ± as long as connective
  • Ovary smooth, with 2 ascending ovules in each locule; style terete or slightly angular; stigma relatively large, capitate and somewhat quadrangular

Nomenclature:

  • Sonderothamnus R.Dahlgren
    • Dahlgren: 41 (l968)
  • Brachysiphon A.Juss.
    • Jussieu: 24, t. 2, fig. 3 (1846) in part
    • Stephens: 90 (1915) in part
    • Dahlgren: 41 (1968) in part
  • Sarcocolla Kunth
    • Kunth: 667 (1830) in part
  • Sondera proposed name:
    • Dahlgren: 5 (1967)

Distribution & Notes:

  • Southern Africa : Species 2, SW Western Cape

References:

  • DAHLGREN, R. 1967. Studies on Penaeaceae I. Systematics and gross morphology of the genus Stylapterus A.Juss. Opera Botanica 15
  • DAHLGREN, R. 1968. Studies on Penaeaceae part II. The genera Brachysiphon , Sonderothamnus and Saltera . Opera Botanica 18
  • JUSSIEU, A.H.L. DE. 1846. Sur la famille des Pénaeacées. Annales des sciences naturelles Botanique 3,6
  • KUNTH, C.S. 1830. Über die Thymelaeen und eine neue, ihnen verwandte Pflanzenfamilie, die Penaeaceen. Linnaea 5
  • STEPHENS, E.L. 1915. Penaeaceae . Flora capensis 5,2