Family 26. Cabombaceae A. Gray, Ann. Lye. N. Y. 4: 46. 1837. Water-Shield Family
Description
This section is from the book "An Illustrated Flora Of The Northern United States, Canada And The British Possessions Vol2", by Nathaniel Lord Britton, Addison Brown. Also available from Amazon: An Illustrated Flora of the Northern United States, Canada and the British Possessions. 3 Volume Set..
Family 26. Cabombaceae A. Gray, Ann. Lye. N. Y. 4: 46. 1837. Water-Shield Family
Aquatic perennial herbs, with rootstocks, mucilage-coated stems, floating or immersed leaves, and solitary axillary flowers. Sepals 3, rarely 4. Petals 3, rarely 4. Stamens 3-18; anthers extrorse, the connective continuous with the filament. Carpels 2-18, distinct. Stigmas sessile or nearly so; ovules 2 or 3, orthotropous. Fruits indehiscent, coriaceous, separate. Seeds 1-3, borne on the dorsal suture; embryo at the base of fleshy endosperm; cotyledons fleshy; hypocotyl very short.
Two genera and about 5 species, widely distributed in fresh-water lakes and streams.
Leaves dissected, excepting the small floating ones; stamens 3-6. | 1. | Cabomba. |
Leaves peltate, entire, floating; stamens 12-18. | 2. | Brasenia. |
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