Plant Image Gallery - Acanthaceae

Acanthus ilicifolius - Cultivated, at Basel Botanical Garden, Switzerland (inflorescence); Image by Botanical Image Database (Basel)
Andrographis paniculata - Image from Yamasaki Lab. Plant Photo Gallery, from Chiang Mai, Thailand (branch in flower)
Andrographis paniculata - Image from Yamasaki Lab. Plant Photo Gallery, from Los Banos, Philippines (inflorescence)
Barleria lupulina - Image from Yamasaki Lab. Plant Photo Gallery, from Chiang Mai, Thailand (branch in flower)
Barleria prionites - Image from Yamasaki Lab. Plant Photo Gallery, from Hatyai, Thailand (branch in flower)
Barleria saxatilis - Cultivated, at Kirstenbosch Botanical Garden/Cape Town (whole plants)
Barleria saxatilis - Cultivated, at Kirstenbosch Botanical Garden/Cape Town (branch in flower)
Barleria saxatilis - Cultivated, at Kirstenbosch Botanical Garden/Cape Town (flower)
Clinacanthus nutans - Image from Yamasaki Lab. Plant Photo Gallery, from Chantaburi, Thailand (whole plants)
Clinacanthus siamensis - Image from Yamasaki Lab. Plant Photo Gallery, from Kohn Kaen, Thailand (branch in flower)
Dianthera candicans - Image from Yamasaki Lab. Plant Photo Gallery, from Hiroshima, Japan (branch in flower)
Dianthera colorata - Image from Yamasaki Lab. Plant Photo Gallery, from Hiroshima, Japan (branch in flower)
Eranthemum nervosum - Image from Yamasaki Lab. Plant Photo Gallery, from Hiroshima, Japan (flowers)
Justicia carnea - Image from Yamasaki Lab. Plant Photo Gallery, from Kunming, China (inflorescence)
Justicia carnea - Image from Yamasaki Lab. Plant Photo Gallery, from Hiroshima, Japan (inflorescence)
Megaskepasma erythrochlamys - Cultivated (whole plant)
Megaskepasma erythrochlamys - Cultivated (flower)
Pachystachys lutea - Cultivated, at Greifswald Botanical Garden, Germany (whole plant)
Pachystachys lutea - Cultivated, at Greifswald Botanical Garden, Germany (inflorescence)
Pachystachys lutea - Cultivated, at Greifswald Botanical Garden, Germany (flower)
Porphyrocoma lanceolata - Cultivated, at Greifswald Botanical Garden, Germany (whole plant)
Razisea spicata - Native, from Monteverde National Park, Costa Rica (inflorescence)
Rhinacanthus nasutus - Image from Yamasaki Lab. Plant Photo Gallery, from Chantaburi, Thailand (whole plant)
Shaueria calycotricha - Image from Yamasaki Lab. Plant Photo Gallery, from Hiroshima, Japan (inflorescence)
Thunbergia laurifolia - Cultivated (flower)
Thunbergia vogeliana - Image from Yamasaki Lab. Plant Photo Gallery, from Hiroshima, Japan (branch in flower)
 

For more pictures see TAMU Vascular Plant Image Gallery - Acanthaceae* and Botanical Image Database (University of Basel)*

Thomas Schoepke