Gynandropsis gynandra

(Linnaeus) Briquet

Annuaire Conserv. Jard. Bot. Genève17: 382. 1914

Common names: Cat’s-whiskers
Synonyms: Cleome heterotricha Cleome pentaphylla Gynandropsis heterotricha Gynandropsis pentaphylla
Basionyms: Cleome gynandra
Found in FNA Volume 7. Treatment on page 223.
FNA7 P31 Hemiscola aculeata.jpeg
Plants (50–)90–150 cm. Leaves: petiole 3.5–4.5(–8) cm, glandular-pubescent; leaflet blade oblanceolate to rhombic, 2.5–4.5 × 1.2–2.5 cm, margins serrulate-denticulate, apex acute, surfaces glabrate to glandular-pubescent. Racemes 5–20 cm (10–40 cm in fruit); bracts trifoliate, 10–25 mm. Pedicels purple, 8–15 mm, glabrous. Flowers: sepals green, lanceolate, 3.5–5 × 0.8–1.2 mm, glandular-pubescent; petals purple or white, oblong to ovate, 7–14 × 3–4 mm; stamens purple, 8–30 mm; anthers 1–2 mm; gynophore purple, 10–14 mm in fruit; ovary 6–10 mm; style 1–1.2 mm. Capsules 45–95 × 3–4 mm, glandular-pubescent. Seeds reddish brown to black, 1.4–1.6 × 1–1.2 mm, rugose to tuberculate. 2n = 34, 36.

Phenology: Flowering late spring–late summer.
Habitat: Disturbed roadsides, vacant lots, waste areas, railroads
Elevation: 0-200 m

Distribution

Introduced; Ala., Fla., Ga., La., Miss., N.Y., N.C., Okla., Pa., S.C., Tex., Old World tropics, introduced also in Mexico, West Indies, Central America, South America.

Discussion

The C4 photosynthetic pathway has been reported from Gynandropsis gynandra (S. K. Imbamba and L. T. Tieszen 1977). This species is sometimes grown as an ornamental. B. S. Barton (1836, p. 317) provided a detailed and accurate illustration of the flower, obviously drawn from life; this indicates that the species was cultivated (perhaps escaped) in Pennsylvania at that time. In some tropical countries, it is cultivated as a potherb (K. Waithaka and Chweya 1991; J. A. Chweya and N. A. Mnzava 1997). It is also used medicinally. The fresh plant has a peculiar odor that is sometimes described as similar to burning Cannabis.

References

None.

Facts about "Gynandropsis gynandra"
AuthorGordon C. Tucker +
BasionymCleome gynandra +
Common nameCat’s-whiskers +
Elevation0-200 m +
HabitatDisturbed roadsides, vacant lots, waste areas, railroads +
IllustratorYevonn Wilson-Ramsey +
PhenologyFlowering late spring–late summer. +
ReferenceNone +
SynonymCleome heterotricha +, Cleome pentaphylla +, Gynandropsis heterotricha + and Gynandropsis pentaphylla +
Taxon nameGynandropsis gynandra +
Taxon parentGynandropsis +
Taxon rankspecies +
VolumeVolume 7 +