Woody Plants Group 2a

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  • Woody Plants Group 2a

    1. 1. Group 2a <ul><li>Rhus glabra </li></ul><ul><li>Rhus typhina </li></ul><ul><li>Eleagnus angustifolia </li></ul><ul><li>Aesculus glabra </li></ul><ul><li>Aesculus hippocastanum </li></ul><ul><li>Ailanthus altissima </li></ul><ul><li>Smooth Sumac </li></ul><ul><li>Staghorn Sumac </li></ul><ul><li>Russian Olive </li></ul><ul><li>Ohio Buckeye </li></ul><ul><li>Horsechestnut </li></ul><ul><li>Tree of Heaven </li></ul>
    2. 2. Rhus glabra Smooth Sumac <ul><li>.A shrub or small tree with a short or multi-stemmed trunk and spreading branches </li></ul><ul><li>10 to 15' high with a comparable spread. It usually grows in colonies, as it suckers and develops in all directions from the mother plant, and prefers full sun but will tolerate partial shade. Smooth sumac tolerates drought and its low water needs make it a good xeriscape plant </li></ul>
    3. 3. Rhus glabra Grown as a tree in Illinois
    4. 4. <ul><li>Leaf: Alternate, pinnately compound, 11 to 31 leaflets per leaf, leaves are 12 to 18 inches long. Leaflets are lanceolate, serrate and are 2 to 4 inches long. Leaflets are finely hairy below. </li></ul>
    5. 5. Flower <ul><li>Flower: </li></ul><ul><li>Dioecious; </li></ul><ul><li>with white petals, borne on upright panicles up to 8 inches long. Flowering June to August. </li></ul>
    6. 6. Fruit <ul><li>A drupe borne in panicles. Fruits are dark red, round and hairy , 1/8 inch long. The panicles droop when mature. Maturing September to October but persisting through winter. </li></ul>
    7. 7. Twig <ul><li>Stout, lacking hairs and often with a glaucous bloom. Buds are small, rounded and covered with light brown hairs, nearly encircled by leafscar. </li></ul>
    8. 8. Bark <ul><li>Bark: Brown-gray and smooth, developing scaly ridges with age </li></ul>
    9. 9. Fall Color
    10. 10. Rhus glabra ID <ul><li>no pubescence on stems </li></ul><ul><li>leaf scar encircles buds </li></ul><ul><li>greenish yellow flowers </li></ul><ul><li>red fruit spikes </li></ul><ul><li>alternate pinnately compound leaves </li></ul><ul><li>stout stems </li></ul>
    11. 11. Rhus glabra liabilities <ul><li>Verticillium Wilt </li></ul><ul><li>aphids, scales, rusts and mites </li></ul><ul><li>suckers </li></ul>
    12. 12. Rhus glabra <ul><li>var. cismontana - Listed as a western variety of the species, this variant is supposedly more drought tolerant than the species. It is also smaller in all its features, reaching only 6' tall with smaller fruit and flower clusters. </li></ul>
    13. 13. Rhus typhina Staghorn Sumac <ul><li>large open shrub or weedy tree </li></ul><ul><li>flat-topped crown </li></ul><ul><li>colonizes and suckers </li></ul><ul><li>15' to 25' tall </li></ul><ul><li>coarse texture </li></ul><ul><li>fast growth rate </li></ul>
    14. 20. ID Rhus typhina <ul><li>greenish yellow flowers </li></ul><ul><li>red fruit spikes </li></ul><ul><li>alternate pinnately compound leaves </li></ul><ul><li>c-shaped leaf scars </li></ul><ul><li>extreme pubescence on leaves and branches </li></ul><ul><li>stout stems </li></ul><ul><li>concealed lenticels </li></ul>
    15. 21. Rhus typhina liabilities <ul><li>Verticillium Wilt </li></ul><ul><li>aphids, scales, rusts and mites </li></ul><ul><li>suckers </li></ul>
    16. 22. Comparison of Rhus
    17. 24. Eleagnus angustifolia Russian Olive <ul><li>Height 20’ Width 20’ </li></ul><ul><li>Low water needs </li></ul><ul><li>Rounded, irregular outline </li></ul><ul><li>Silver green to gray green foliage </li></ul><ul><li>Yellow fall color </li></ul><ul><li>Fragrant greenish yellow flowers </li></ul><ul><li>NOXIOUS WEED in Colorado </li></ul>
    18. 30. Eleagnus angustifolia ID <ul><li>small, sessile, solitary, conical buds </li></ul><ul><li>suckers / invasive </li></ul><ul><li>alternate leaf arrangement </li></ul><ul><li>brown lenticels cover every part of plant </li></ul><ul><li>silvery look to foliage, fruit and flowers </li></ul><ul><li>yellow fruit </li></ul>
    19. 31. Eleagnus angustifolia liabilities <ul><li>thorns sometimes present </li></ul><ul><li>leaf spot, canker, aphids </li></ul><ul><li>Verticillium wilt </li></ul><ul><li>INVASIVE WEED </li></ul>
    20. 32. Aesculus glabra Ohio Buckeye <ul><li>Height 35’ Spread 35’ </li></ul><ul><li>Medium water </li></ul><ul><li>NO salt tolerance </li></ul><ul><li>Showy yellow flowers </li></ul><ul><li>Leaves opposite , palmately compound </li></ul><ul><li>5 leaflets </li></ul><ul><li>Brown 1-2” nutlets </li></ul><ul><li>Fall color- pumpkin orange </li></ul>
    21. 33.                                      
    22. 39. Large terminal bud
    23. 40. Aesculus glabra ID <ul><li>large, palmately compound leaves typical of Aesculus </li></ul><ul><li>fruits have short prickles A. hippocastanum have long prickles) </li></ul><ul><li>large terminal bud typical of Aesculus ; non-resinous </li></ul><ul><li>Droop and swoop branches </li></ul><ul><li>Nice fall color </li></ul>
    24. 41. Liabilities <ul><li>dense shade limits grass growth underneath </li></ul><ul><li>leaf scorch and leaf drop are problems when planted in too small an area </li></ul><ul><li>leaf blotch, powdery mildew, canker; also an assortment of scales, mealybugs, caterpillars and borers </li></ul><ul><li>this species and A. hippocastanum most likely to develop troubles of this genus </li></ul><ul><li>can be messy (leaf, twig, fruit litter </li></ul>
    25. 42. Aesculus hippocastanum Horsechestnut
    26. 44. Very showy flowers blotches of red and yellow
    27. 48. <ul><li>ID Features </li></ul><ul><ul><li>large, resinous buds , reddish brown </li></ul></ul><ul><ul><li>large, 7-leaflet, palmately-compound leaves </li></ul></ul><ul><ul><li>leaves have impressed veins </li></ul></ul><ul><ul><li>fruits are the most spiny of all Aesculus </li></ul></ul><ul><ul><li>Avoid hot, dry locations </li></ul></ul>
    28. 49. Liabilities <ul><li>fruits can be messy </li></ul><ul><li>large and cannot be used at small residences </li></ul><ul><li>leaf scorch and blotch can be serious problems and occur to some degree nearly every year </li></ul><ul><li>powdery mildew </li></ul><ul><li>young leaves and fruit are considered poisonous </li></ul>
    29. 50. Ailanthus altissima Tree of Heaven <ul><li>Height 40-60’ Spread 30-40’ </li></ul><ul><li>No water needed after establishment </li></ul><ul><li>Alternate, pinnately compound, 1-3 foot leaves, 11-41 leaflets , leaflets 2-6” </li></ul><ul><li>Flowers yellow-green, bad odor </li></ul><ul><li>Fruit: twisted samara 1-1 ½” long with seed in the center </li></ul><ul><li>Twig – velvety hairs, red-brown pith </li></ul>
    30. 51. Ailanthus altissima <ul><li>Bark looks like the skin of a cantaloupe </li></ul><ul><li>Form – short to medium sized tree with heavy branches </li></ul><ul><li>Tends to droop </li></ul><ul><li>Grows in clumps </li></ul>
    31. 58. Ailanthus altissima <ul><li>ID Features </li></ul><ul><li>very large, pinnately compound leaves with many leaflets </li></ul><ul><li>general acrid odor to plant (male flowers, leaves, twigs) </li></ul><ul><li>twigs short, reddish-brown, velvety </li></ul><ul><li>large leaf scars with small, two-scaled buds </li></ul><ul><li>light brown, wide pith </li></ul>
    32. 59. Liabilities <ul><li>prolific fruiting, ready germination , adaptability to harsh sites and rapid growth rate make it a noxious weed in many places </li></ul><ul><li>short-lived, in general </li></ul><ul><li>male flowers, bruised twigs and crushed leaves have an acrid odor </li></ul><ul><li>weak, softwood breaks easily in storms </li></ul><ul><li>verticillium wilt </li></ul>
    33. 60. ID from Photographs
    34. 61. ID by Leaf
    35. 65. ID by Flower
    36. 69. ID by Fruit
    37. 75. ID by entire tree

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