Wild Florida Photo - Senna occidentalis - Septicweed

Senna occidentalis (L.)Link

Coffee Senna

Not native to Florida

Brevard Co. FL 11/19/19
Brevard Co. FL 11/19/19

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A frequent shrub of disturbed sites in much of Florida. Native to tropical America, septicweed has been introduced throughout the southeastern United States, west onto Texas to Kansas, north to Iowa to Indiana and northeast into New York and Massachusetts. Can now be found in tropical regions worldwide.
The pinnate leaves usually have four to five pairs of ovate or broadly elliptic leaflets, sometimes 6 pairs. Senna occidentalis has a spherical gland at the base of the petioles. The yellow flowers are in groups from two to four in number at the ends of branchlets and in the upper leaf axils. The inflorescence is on a 2-5mm long peduncle branching into pedicels 10-15mm (4/10 to 6/10 in.) long supporting each flower. The fruit is a thin cylindrical pod 12-18cm (4-3/4 to 7 in.) long with a conspicuous light margin.


Senna occidentalis is a member of the Fabaceae - Pea family.

Other species of the Senna genus in the Wild Florida Photo database:
  Senna didymobotrya - AFRICAN SENNA
  Senna mexicana var. chapmanii (Isely)H.S.Irwin & Barneby - CHAPMAN'S WILD SENSITIVE PLANT
  Senna obtusifolia - COFFEEWEED
  Senna pendula var. glabrata (Vogel)H.S.Irwin & Barneby - VALAMUERTO

Date record last modified: Dec 03, 2023

Paul Rebmann Nature Photography at pixels.com