LANDSCAPE PLANTS I

Fall

Sample Exam #2

Please use a soft-leaded pencil on the score sheet.

Match the Genus with the Appropriate Family:

1.          Hedera                                                                   A.         Anacardiaceae

2.          Cercis                                                                    B.         Araliaceae

3.          Rhus

4.          Ampelopsis                                                           C.         Betulaceae

5.          Callicarpa                                                              D.         Celastraceae

6.          Wisteria

7.          Paxistima                                                              E.         Juglandaceae

8.          Maclura                                                                 F.         Lauraceae

9.          Lindera

10.        Laburnum                                                             G.         Leguminosae or Fabaceae

11.        Gymnocladus                                                        H.         Moraceae

12.        Euonymus

13.        Carya                                                                     I.          Verbenaceae

14.        Carpinus                                                                J.          Vitaceae

15.        Alnus

Use A or 1 for True; B or 2 for False

16.        Anthracnose is a disease problem on Celtis occidentalis that causes a witches broom type of growth.

17.        Linnaeus was the Swedish botanist who first used the binomial system of nomenclature.

18.        Nyssa and Platanus grow well in wet sites and can be used as parking lot trees.

19.        Parthenocissus , Nyssa, Rhus aromatica, and Acer ginnala have showy red fall color.

20.        Elaeagnus angustifolia is salt tolerant but often has dieback of branches caused by a canker disease.

21.        Clethra alnifolia is in the Staphyleaceae and has very fragrant flowers in late summer.

22.        Scale insects are a common problem on Celastrus, Callicarpa, and Euonymus.

23.        Asimina triloba, Gleditsia triacanthos, Cercis canadensis, Lindera benzoin , and Cladrastis lutea have good

 yellow fall color.

24.        Acer tataricum subspecies ginnala in in The New Royal Horticultural Society Dictionary of Gardening is listed

 as Acer ginnala in this class and in Hortus Third.

25.        Toxicodendron radicans, often listed as Rhus radicans, has brown pubescent buds and grows as a vine, shrub, or

 small tree.

26.        Acanthopanax, Robinia, Gleditsia triacanthos, and Campsis radicans have spines on their branches.

27.        Both Sophora japonica, and Sassafras albidum have green stems on the last few years growth. Leaves are simple

 or lobed.

28.        Laburnum anagyroides, Diospyros virginiana, and Wisteria have poisonous fruit.

29.        Acer griseum, Betula papyrifera, ,and Ulmus parvifolia have decorative bark.

30.        Acer campestre is a natural hedge tree with good yellow color and leaves that are smaller than Acer saccharum.

31.        Acer rubrum, Celtis occidentalis ,and Acer saccharinum are good plants for wet sites.

32.        Juglans has chambered pith in the stems, edible fruit, and pinnately compound leaves.

33.        Acer saccharum, leaves change color in the fall before those of Acer platanoides, and have much more vivid

 colors.

 34.        Cercis canadensis has flowers on older stems and trunks, which is known as cauliflory. This is a common

 characteristic in tropical regions (like on the Chocolate tree), but rare in tropical regions.

35.        Gleditsia triacanthos var. inermis can have pinnately compound leaves and bipinnately compound leaves.

36.        Carpinus and Cladrastis, and Ostrya have smooth trunks and stems.

37.        Plants native to Europe usually have more cultivars available than native North American plants.

38.        An aril is a showy fleshy covering around the seeds of plants in the Celastraceae.

39.        Acer saccharum, and Acer ginnala are monoecious, with male and female flowers on same plant.

40.        Phellodendron has corky bark, pinnately compound leaves, yellow fall color, subpetiolar buds, and black fruit.

41.        The name inermis is used for plants without spines or thorns.

42.        Family names usually end in -aceae, according to the International Code of Nomenclature for Cultivated Plants.

43.        We are in Zone 5 according to the U.S.D.A. hardiness zone map, while plants farther north are in Zone 4 or

 lower. The lowest winter temperature in Zone 5 is usually -10 to -20 Degrees Fahrenheit.

44.        Scientific names are in Botanical Latin, which are printed like you see them on this exam, even when the text and

 descriptions are in another language.

45.        Callicarpa dichotoma is a shrub that produces showy purple fruit on new growth. The stems often die back to the

 ground in the winter.

46.        Greenish bark with white stripes is characteristic of Acer pensylvanicum, along with samaras hanging in a string-

like cluster, and leaves with a yellow fall color. This is an understory tree.

47.        The plant family descriptions and family order used in this class follow those of Cronquist.

48.        A monoecious plant like Alnus or Betula has separate male and female flowers on the same plant.

49.        Ulmus species always have yellow fall color, leaves with an oblique leaf base, and fruit in the Spring or Fall.

50.        Acer saccharum is usually faster growing than Acer rubrum or Acer saccharinum.

51.        Acanthopanax sieboldianus in Hortus Third is known as Eleutherococcus sieboldianus in The New Royal

 Horticultural Society Dictionary of Gardening.

52.        Rhus typhina usually has red fall color, red colored fruit, and smooth stems on the newer growth.