Buddleja diffusa, a plant species endemic to central Peru and northern Argentina
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Boerhavia diffusa, the tar vine, punarnava or red spiderling, a flowering plant species
Commelina diffusa | Chorizanthe diffusa | Centaurea diffusa | Buddleja diffusa | Boerhavia diffusa |
Chorizanthe diffusa, the diffuse spineflower, a flowering plant species endemic to California