Justicia

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Justicia (earlier name Jacobinia) is a genus of about 420 species of flowering plants in the family Acanthaceae, native to tropical to warm temperate regions of the Americas, with two species occurring north into cooler temperate regions. Common names include water-willow and shrimp plant, the latter from the inflorescences, which resemble a shrimp in some species.

Selected species

Justicia adhadota
Justicia adhatodoides
Justicia americana
Justicia androsaemifolia
Justicia angusta
Justicia betonica
Justicia borinquensis
Justicia brandegeeana
Justicia brasiliana
Justicia californica
Justicia candicans
Justicia carnea
Justicia carthagenensis

Justicia comata
Justicia cooleyi
Justicia crassifolia
Justicia culebritae
Justicia cydoniifolia
Justicia fulvicoma
Justicia kotschyi
Justicia leonardii
Justicia martinsoniana
Justicia mirabiloides
Justicia orchioides
Justicia ovata
Justicia pectoralis

Justicia plumbaginifolia
Justicia procumbens
Justicia quinqueangularis
Justicia rizzinii
Justicia runyonii
Justicia secunda
Justicia sonorae
Justicia sphaerosperma
Justicia spicigera
Justicia tweediana
Justicia warnockii
Justicia wrightii

Justicia americana (American Water-willow), is native to eastern North America north to southern Ontario; it is the hardiest species in the genus, hardy to USDA Plant Zone 4. Justicia ovata (Looseflower Water-willow) occurs nearly as far north, reaching Michigan.

Justicia brandegeeana (formerly Beloperone guttata, commonly called Shrimp Plant) is native to Mexico. It is hardy to −4 °C but will often recover in the spring after freezing back in USDA Plant Zone 8a.

Justicia carnea (formerly Jacobinia carnea, common names including Brazilian Plume Flower, Flamingo Flower, and Jacobinia) is native to South America in southern Brazil, paraguay and northern Argentina. It is hardy to −2 °C but will often recover in the spring after freezing back in USDA Plant Zone 8a.

References

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