Description of Hydrocharitaceae
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Description: Habit and leaf form; Anatomy; Morphology; Physiology; Biochemistry; Geography.
Angiosperm families - Hydrocharitaceae Juss. The families of flowering plants . Mostly perennial; with a basal aggregation of leaves, or without conspicuous aggregations of leaves. Hydrophytic, or helophytic; marine (Thalassioideae, Halophiloideae), or non-marine (Hydrocharitoideae); free floating, or rooted. Leaves submerged, or emergent, or floating, or submerged and emergent, or submerged and floating. Heterophyllous (usually), or not heterophyllous. Leaves alternate, or opposite, or whorled; spiral, or distichous; membranous, or ‘herbaceous’; petiolate, or sessile, or petiolate and sessile; sheathing to non-sheathing. Leaf sheaths with free margins. Leaves simple; epulvinate. Lamina entire; linear, or oblong to orbicular (usually with ribbonlike submerged leaves); one-veined, or pinnately veined, or palmately veined, or parallel-veined; cross-venulate, or without cross-venules. Leaves stipulate, or exstipulate.
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| Page title: | Angiosperm families - Hydrocharitaceae Juss. |
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| Description: | Description of Hydrocharitaceae Juss., generated from a DELTA database. |
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| Date | Creation Date: 10-feb-2003 Expiration Date: 10-feb-2023 |