img

Senna

Mill. (1754)

This name is accepted

Kingdom: Viridiplantae Phylum: Magnoliophyta Class/Clade: Eudicot-Rosids Order: Fabales Family: Fabaceae Genus: Senna

img

Description

Key Characters:

Growth Form: Trees, shrubs, or herbs, with clavate or mounded nectaries (glands) on petioles, leaf rachises, or axes of the racemes.

Stems:

Roots:

Leaves: Leaves compound (even-pinnate). Alternate. Leaflets opposite. Petiolate; petiole with or without glands. Stipules present.

Flowers: Flowers in racemes, these sometimes paniculate or corymbosely clustered toward the ends of the branches, rarely cauliflorous. Flowers caesalpinaceous. Bracteoles absent. Calyx lobes 5, imbricate. Corolla of 5 petals, yellow or rarely white, all similar or the uppermost (adaxial) petal modified as a standard or the lowermost (abaxial) one as an androecial shield. Stamens 4–10, graduated in length from the adaxial to abaxial side of the flower, when 10, all fertile or the 3 adaxial Stamens staminodial; filaments straight, shorter than to not more than twice as long as the anthers; fertile anthers (6)7–10, basifixed, usually modified into sets of 4 median and (2)3 abaxial anthers, all ± beaked or appendaged at apex, where dehiscent by 2 pores or short slits. Ovary superior.

Fruit: Pods usually terete (cylindrical) or angled; sometimes crested or the valves winged; indehiscent or tardily dehiscent along the ventral or both sutures; sometimes breaking up into panels or indehiscent achene-like segments. Seeds distinct from or cohering to the endocarp; either perpendicular to the longitudinal axis or descending; seed coat naked or wax coated; smooth or irregularly pitted; sometimes with distinct areoles.

Ploidy:

Habitat:

Elevation Range:

Historical Distribution

Images

img

Uses and Culture

USES

Natural History

Island Status

Dispersal Agents


Pollinators

Specimens

img
img

Bibliography

Name Published In: Gard. Dict. Abr. ed. 4: s.p. (1754)

Occurrences

SNo. Scientific Name Scientific Name Authorship Locality Habitat Basis of Record Recorded By Record Number Island Source Date
Back to Top