Slideshow image
Acanthaceae
Acanthaceae image
Max Licher  
Herbs, sometimes vines, shrubs or trees, with opposite leaves, simple, pinnate venation, exstipulate. Variable inflorescences, with bilateral flowers, often with large, colorful bracts and bracteoles; 5 connate sepals/5 connate petals, 4 didynamous stamens, with filaments adnate to corolla. Superior ovary, 2 fused carpels, with axile placentation. Fruit an explosively dehiscent capsule with a funicle that is modified into a retinacula (a hook-shaped stalk that flings seed out).
Species within Nebraska