Ipomoea tricolor, morning glory « tlilitzin » des Aztèques // Plante grimpante annuelle // Sud Mexique, Guatemala, Amérique Sud, Antilles. // The morning glories are a very wide-ranging plant group, including a plant called bindweed. It is characterized by extremely rapid vine growth and impressive blooms. Their flowers span the whole range of colors. The most beautiful of the morning glory is nocturnal, its flowers opening only at night.