Flowers actinomorphic; calyx tube 6–11 mm wide at throat, sometimes splitting longitu­dinally; bannerlike petals 5; stamens usually distinct, some-times connate in bundles of 2–5. 2n = 16.

Phenology: Flowering May–Nov (year-round).
Habitat: Sandy soils.
Elevation: 0–50 m.

Distribution

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Introduced; Fla., Africa, introduced also in West Indies, South America, Asia (India), Pacific Islands (Fiji, Java, Philippines).

Discussion

Variety pleniflora is probably of garden origin; it is currently naturalized pantropically. Botanists not familiar with this variety often file vouchers in herbaria as unidentified caesalpinoid legumes or as unidentified taxa of Convolvulaceae. The variety is prized as an ornamental, blue-flowering vine. A form with white petals has been vouchered from Cuba and Thailand. Some early collections of var. pleniflora (Anonymous [undated], S; Anonymous in 1812, W) may possibly be from outside of cultivation; more recent specimens are more likely from cultivation.

Selected References

None.

Lower Taxa

None.