Senna septemtrionalis

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Photographs by: Dr. Maulik Gadani

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  • Botanical Name : Senna septemtrionalis (Viv.) H.S. Irwin & Barneby
  • Synonyms : Cassia laevigata Willd.
  • Common Name : Arsenic-Bush, Dooleyweed, Laburnum, Smooth Senna
  • Plant Family : Caesalpiniaceae
  • Plant Form : Shrub
  • Occurrence (Special Areas) : Indroda Park

About Senna septemtrionalis Plant :

  • Habit : A shrub with branchlets pale olive-brown, glabrous.
  • Leaves : Paripinnate, stipulate, stipules narrowly triangular, glabrous, possess a conical reddish gland between each leaflet pair and terminating the rachis, leaflets 3-4 pairs, ovate to elliptic, base cuneate, apex acuminate.
  • Inflorescence : Racemose
  • Flowers :
    • Bracteate, bracts triangular, glabrous, caducous.
    • Sepals 5, two larger and three smaller, elliptic to obovate, glabrous.
    • Petals unequal, largest broadly obovate, others elliptic to obovate, acute, yellowish.
    • Stamens 10.
    • Ovary curved, terete, glabrous, stigma terminal surrounded by a fringe of hairs.
  • Fruit : Pod straight, grooved, the sutures mucronate, glabrous, seeds brown, in two rows, obovate, flattened.
  • Flowering and Fruiting Time : February - April