Northern Prairie Wildlife Research Center
Southern Wetland Flora
Field Office Guide to Plant Species
Gelsemium rankinii Small
- Family: Logania (Loganiaceae)
- Flowering: March-April
- Field Marks: This species is very similar to Gelsemium sempervirens, except that the
sepals persist on the capsules and the flowers lack an odor.
- Habitat: Wet woods, swamps, bogs.
- Habit: Woody vine climbing high on trees.
- Stems: Twining or
trailing, smooth, several to many feet long.
- Leaves: Opposite, simple, evergreen, lanceolate to ovate,
pointed at the tip, rounded or tapering to the base, without teeth, smooth, up to 4 inches long, up to
3/4 inch wide.
- Flowers: Solitary or few in a cluster in the axils of the leaves, borne on short stalks.
- Sepals: 5, free, green, pointed at the tip, persistent on the fruit, up to 1/4 inch long.
- Petals: 5, yellow,
united to form a tube, up to 1 3/4 inches long.
- Stamens: 5, attached to the tube of the petals.
- Pistils: Ovary superior; styles 2, each 2-cleft.
- Fruits: Capsules flat, ellipsoid, up to 3/4 inch long, with the
pointed sepals persisting; seeds brown, flat, up to 1/4 inch long.
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