The Collaborative International Dictionary
Gelsemine \Gel"se*mine\, n. (Chem.) An alkaloid obtained from the yellow jasmine ( Gelsemium sempervirens), as a bitter white semicrystalline substance; -- called also gelsemia.
Gelseminic \Gel`se*min"ic\, n. (Chem.) Pertaining to, or derived from, the yellow jasmine ( Gelsemium sempervirens); as, gelseminic acid, a white crystalline substance resembling esculin.
Gelsemium \Gel*se"mium\, n. [NL., fr. It. gelsomino jasmine.]
(Bot.) A genus of climbing plants. The yellow (false) jasmine ( Gelsemium sempervirens) is a native of the Southern United States. It has showy and deliciously fragrant flowers.
(Med.) The root of the yellow jasmine, used in malarial fevers, etc.
Wikipedia
Gelsemium sempervirens is a twining vine in the family Gelsemiaceae, native to subtropical and tropical America: Honduras, Guatemala, Belize, Mexico ( Chiapas, Oaxaca, Veracruz, Puebla, Hidalgo), and southeastern and south-central United States (from Texas to Virginia). It has a number of common names including yellow jessamine or jasmine, Carolina jasmine or jessamine, evening trumpetflower, gelsemium and woodbine.