Herbs, sometimes shrubby, with often succulent stems. Leaves alternate, opposite or whorled, simple. Inflorescences axillary, less often terminal or solitary. Flowers bisexual, zygomorphic. Sepals 3(5), the posterior large, petaloid and nearly always spurred, the lateral small. Petals 5, the anterior one always large, flat or helmet-shaped; the 4 lower ones usually connate in pairs, usually deeply 2-lobed. Stamens 5. Ovary superior, 5-locular. Fruit a capsule.
Barcode of Life Data Systems (BOLD) Stats Specimen Records:232 Specimens with Sequences:273 Specimens with Barcodes:132 Species:140 Species With Barcodes:139 Public Records:180 Public Species:137 Public BINs:0