Northern Prairie Wildlife Research Center
Aquatic and Wetland Vascular Plants of the Northern Great Plains
Clusiaceae - The Mangosteen Family
Perennial and annual glabrous herbs (in those included here), usually simple
below, branched above in the inflorescence. Leaves simple, opposite,
sessile and often clasping at the base, glandular-punctate with brown or black
glands, especially beneath. Flowers few to many in terminal cymes or
clusters, or some also in lateral clusters from the upper axils, perfect, regular;
sepals 5; petals 5, yellow or pink to greenish or purplish; stamens
9-35, free or united below by their filaments into 3 or more fascicles; pistil
3-carpellary, styles 3, ovary superior, maturing as a 3-valved, many-seeded
||Petals yellow; stamens 15-35, free.
||Petals pink to greenish or purplish; stamens 9(12),
fascicled in 3 groups.
17. Clusiaceae, the Mangosteen Family
1. Hypericum L. -- St. John's-wort
2. Triadenum Raf. -- Marsh St. John's-wort
- 1. Hypericum majus (A. Gray) Britt.
-- Greater St. John's-wort
- 1. Triadenum fraseri (Spach) Gl.
Previous Section -- Elatinaceae - The Waterwort
Return to Contents
Next Section -- Droseraceae - The Sundew Family