Woody Plants Group 6a
- 1. Woody Plants #6 Populus alba Populus angustifolia Populus deltoides/sargentii Populus nigra ‘Italica’ Populus tremuloides Populus x acuminata White Poplar Narrowleaf Cottonwood Plains Cottonwood Lombardy Poplar Quaking Aspen Lanceleaf Cottonwood
- 2. Populus alba White Poplar
- 3. Populus alba
- 6. ID Populus alba small, imbricate buds appressed light chestnut brown buds showy, white bark pubescent and white leaf undersides Unusual 5 lobed leaf for a populus coarsely toothed leaf margins catkins
- 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
- 10. Populus deltoides/sargentii Plains Cottonwood
- 16. Populus deltoides/sargentii 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.
- 17. Populus deltoides/sargentii Leaf: Alternate, simple, pinnately veined 3-6”, triangular. Deltoid shape Petiole flattened and glands at the top of the petiole Flower: male and female catkins Fruit: Cottony seeds ¼” long in a capsule that opens Buds, slender and very pointed
- 18. Populus deltoides/sargentii buds are resinous and pine-scented winged stems showy furrowed bark toothed margins yellow catkins
- 20. Largest Plains Cottonwood in Hygiene, CO
- 22. Male Female
- 24. Populus nigra ‘Italica’ Lombardy Poplar Leaf: Alternate, simple, broadly deltoid, 2-4 in, finely serrate-crenate, straight across the base, flattened petiole shiny dark green above, paler below Flower: only male trees, slender, reddish to yellow-green catkins 2-3 in long; in spring before leaves Fruit: no fruit in ‘Italica’
- 25. Populus nigra ‘Italica’ small, imbricate, appressed buds; reddish brown Deltoid leaf shape serrate leaf margins bright green leaf color red catkins columnar growth habit
- 30. Populus x acuminata Lanceleaf Cottonwood Cross between Populus angustifolia x P. deltoides Full sun Sharply pointed leaves up to 4 inches long Alternate, simple, dentated, narrow tip, glossy Pyramidal form Yellow fall color
- 35. Populus tremuloides Aspen 110 years old 90 ft tall
- 38. Female Male
- 40. ID Populus tremuloides terminal, imbricate, conical, sharp-pointed buds buds are resinous and reddish brown narrow, conical habit finely, serrated leaf margins slender, reddish, brown twigs No corky bark
- 42. ID Entire Tree
- 46. ID Leaves
- 53. ID Fruit
- 55. ID Flower
- 56. Male Female
- 57. ID Bark