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Grass adaptations

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Grass adaptations

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    1. Grass adaptations Warm season and cool season grasses Morphological adaptations Root tillering, depth Leaf orientation, rolling Microscopic adaptations Leaf anatomy Leaf epidermal features Physiological adaptation C4 photosynthesis Some examples

    2. Dune grasses Problems: Lots of wind Unstable, nutrient-poor substrate (sand) Lack of fresh water

    4. Grasses for stabilizing dues American beachgrass Ammophila breviligulata Northern cool season grass Sea oats, more common Virginia south Warm season grass Bitter panicum Panicum amarum Warm season grass, found throughout Saltmeadow cordgrass (Spartina patens) More tolerant of saline conditions

    5. American beachgrass Ammophila breviligulata Northern cool season grass Most common dune grass

    6. Can withstand being buried by sand Makes huge mat of underground rhizomes Roots may extend over 10 feet under the sand

    7. Leaf adaptations to wind, dry conditions Inrolled leaf Surface hairs

    9. Uniola paniculata Sea oats more common Virginia south Warm season grass

    10. Not to be confused with northern sea oats More of an inland plant Highly ornamental, can be a bit invasive

    11. Panicum amarum Bitter panic grass Warm season grass Found throughout east and south coast of US Used to stabilize dunes

    12. Spartina patens Saltmeadow cordgrass More tolerant of saline conditions Salt glands and other adaptations

    13. Prairie grasses Source of topsoil Biofuel potential

    15. Panicum virgatum

    17. Cool season grasses More growth spring and fall, may go dormant in heat of summer Most commonly recommended lawn grasses for our area Warm season grasses Start growth later in spring Lawn grasses for southern US

    19. Roots of grasses Some stay near surface, some go very deep

    20. Adventitious roots in grasses True root short-lived Roots develop from stems Fibrous rather than tap roots

    21. Tillering in grasses Tillering complex, involves additional lateral stem growth Lateral buds in short stem develop

    22. Tiller differences

    23. Horizontal and vertical leaf orientation

    24. Leaf adaptation to drought

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