Water-willow (Justicia) is a biological genus in the family Acanthaceae and order Lamiales.
Justicia americana
Justicia candicans
Justicia californica
Justicia carnea
Justicia cooleyi
Justicia culebritae
Justicia pectoralis
Justicia pilosella
Justicia androsaemifolia
Justicia periplocifolia
Justicia secunda
Justicia tobagensis
Justicia veracruzana
Justicia longii
Justicia ovata
Justicia adhatoda
Justicia comata
Justicia spicigera
Justicia angusta
Justicia martinsoniana
Justicia runyonii
Justicia brandegeeana
Justicia sonorae
Justicia betonica
Justicia crassifolia
Justicia sphaerosperma
Justicia turneri
Justicia warnockii
Justicia mirabiloides
Justicia carthagenensis
Justicia wrightii
Acanthus
Aphelandra
Asystasia
Barleriola
Avicennia
Blechum
Yeatesia
Megaskepasma
Crossandra
Anisacanthus
Eranthemum
Andrographis
Dicliptera
Graptophyllum
Hemigraphis
Henrya
Holographis
Hypoestes
Lepidagathis
Nelsonia
Nomaphila
Oplonia
Pachystachys
Barleria
Pseuderanthemum
Sanchezia
Elytraria
Stenandrium
Dyschoriste
Strobilanthes
Hygrophila
Teliostachya
Tetramerium
Thunbergia
Odontonema
Siphonoglossa
Justicia
Ruellia
Carlowrightia