Woody Plants Group 6a

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  • Woody Plants Group 6a

    1. 1. Woody Plants #6 <ul><li>Populus alba </li></ul><ul><li>Populus angustifolia </li></ul><ul><li>Populus deltoides/sargentii </li></ul><ul><li>Populus nigra ‘Italica’ </li></ul><ul><li>Populus tremuloides </li></ul><ul><li>Populus x acuminata </li></ul><ul><li>White Poplar </li></ul><ul><li>Narrowleaf Cottonwood </li></ul><ul><li>Plains Cottonwood </li></ul><ul><li>Lombardy Poplar </li></ul><ul><li>Quaking Aspen </li></ul><ul><li>Lanceleaf Cottonwood </li></ul>
    2. 2. Populus alba White Poplar
    3. 3. Populus alba
    4. 6. ID Populus alba <ul><li>small, imbricate buds appressed </li></ul><ul><li>light chestnut brown buds </li></ul><ul><li>showy, white bark </li></ul><ul><li>pubescent and white leaf undersides </li></ul><ul><li>Unusual 5 lobed leaf for a populus </li></ul><ul><li>coarsely toothed leaf margins </li></ul><ul><li>catkins </li></ul>
    5. 7. Populus angustifolia Narrowleaf Cottonwood Mistaken for a willow because of narrow leaves Predominant tree in the San Juans and So.west Colorado Striking Fall Color
    6. 10. Populus deltoides/sargentii Plains Cottonwood
    7. 11. Populus deltoides
    8. 16. Populus deltoides/sargentii <ul><li>Hardiness Zones: 2 to 7 Height: 80 ft Spread: 40 ft Form: rounded Type: deciduous tree Annual Growth Rate: more than 18 inches Comments: Sargent poplar is pyramidal when young but becomes rounded with age. The tree is found near rivers and may be used in wet soils. Poplars are problem-prone plants that require more care than other trees. </li></ul>
    9. 17. Populus deltoides/sargentii <ul><li>Leaf: Alternate, simple, pinnately veined 3-6”, triangular. Deltoid shape </li></ul><ul><li>Petiole flattened and glands at the top of the petiole </li></ul><ul><li>Flower: male and female catkins </li></ul><ul><li>Fruit: Cottony seeds ¼” long in a capsule that opens </li></ul><ul><li>Buds, slender and very pointed </li></ul>
    10. 18. Populus deltoides/sargentii <ul><li>buds are resinous and pine-scented </li></ul><ul><li>winged stems </li></ul><ul><li>showy furrowed bark </li></ul><ul><li>toothed margins </li></ul><ul><li>yellow catkins </li></ul>
    11. 20. Largest Plains Cottonwood in Hygiene, CO
    12. 22. Male Female
    13. 24. Populus nigra ‘Italica’ Lombardy Poplar <ul><li>Leaf: Alternate, simple, broadly deltoid, 2-4 in, finely serrate-crenate, straight across the base, </li></ul><ul><li>flattened petiole </li></ul><ul><li>shiny dark green above, paler below </li></ul><ul><li>Flower: only male trees, slender, reddish to yellow-green catkins 2-3 in long; in spring before leaves </li></ul><ul><li>Fruit: no fruit in ‘Italica’ </li></ul>
    14. 25. Populus nigra ‘Italica’ <ul><li>small, imbricate, appressed buds; reddish brown </li></ul><ul><li>Deltoid leaf shape </li></ul><ul><li>serrate leaf margins </li></ul><ul><li>bright green leaf color </li></ul><ul><li>red catkins </li></ul><ul><li>columnar growth habit </li></ul>
    15. 30. Populus x acuminata Lanceleaf Cottonwood <ul><li>Cross between Populus angustifolia x P. deltoides </li></ul><ul><li>Full sun </li></ul><ul><li>Sharply pointed leaves up to 4 inches long </li></ul><ul><li>Alternate, simple, dentated, narrow tip, glossy </li></ul><ul><li>Pyramidal form </li></ul><ul><li>Yellow fall color </li></ul>
    16. 32. Populus x acuminata
    17. 35. Populus tremuloides Aspen 110 years old 90 ft tall
    18. 38. Female Male
    19. 40. ID Populus tremuloides <ul><li>terminal, imbricate, conical, sharp-pointed buds </li></ul><ul><li>buds are resinous and reddish brown </li></ul><ul><li>narrow, conical habit </li></ul><ul><li>finely, serrated leaf margins </li></ul><ul><li>slender, reddish, brown twigs </li></ul><ul><li>No corky bark </li></ul>
    20. 41. ID from Photographs
    21. 42. ID Entire Tree
    22. 46. ID Leaves
    23. 53. ID Fruit
    24. 55. ID Flower
    25. 56. Male Female
    26. 57. ID Bark

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