Category: Nature/Gardening/Animals

Michigan Trees: A Handbook of the Native and Most Important Introduced Species

ee. Twigs essentially terete; leaves of two kinds, either scale-like, or else awl-shaped, often both kinds on the same branch, not decurrent on the stem; fruit berry-like, bluish. JUNIPERUS, p. 33.

Chapters

50. cc. Buds pale-pubescent above the middle, but usually glabrous

HABIT.--A large tree 60-80 feet high, with a trunk diameter of 2-4 feet; forming a short, thick trunk with stout, horizontal, far-reaching limbs, more or less gnarled and twiste...

66. dd. Upper margin of leaf-scars not concave, but straight

HABIT.--A large tree 50-75 feet high, with a trunk diameter of 2-3 feet; forming an open, pyramidal crown of long, slender, lateral branches and a stout, rather sparse spray.

27. cc. Bark of trunk gray to nearly black; cones maturing in

HABIT.--A large tree 60-80 feet high, with a trunk diameter of 2-4 feet; forming a wide, pyramidal crown. Formerly trees 100-150 feet in height and 5-7 feet in trunk diameter we...

62. cc. Buds not conspicuously stalked; bud-scales visible, 2-3

HABIT.--A small tree at best, more often a large shrub, seldom attaining a height of more than 30 feet, with a short trunk 5-8 inches through. The striped, upright branches form...

34. cc. Buds about 1 inch long, merely puberulous; outer

LEAVES.--Alternate, compound, 8-14 inches long. Leaflets usually 5, the upper 5-7 inches long and 2-3 inches broad; sessile, except the terminal; obovate to oblong-lanceolate; f...

32. cc. Terminal buds nearly 1 inch long; buds fragrant; twigs

HABIT.--A large tree 60-80 feet high, with a trunk diameter of 2-4 feet, forming a large, spreading, rounded or irregular crown of large, crooked branches and sparse, stout bran...

17. dd. Thorns unbranched on twigs, situated at the nodes; lateral

jj. First scale of lateral bud not directly in front, i. e., to one side of the center of the leaf-scar; twigs not brittle; pith circular in cross-section. PRUNUS, p. 153.

21. ii. Bud at end of twig symmetrical, not mucilaginous when

HABIT.--A slender tree in youth, with slender, upright branches, becoming broader with age and forming a symmetrical, pyramidal crown; probably 60-80 feet high, with a trunk dia...

20. ll. Bundle-scars not depressed, inconspicuous; bark thin,

1. dd. Leaves in fascicles of 8-many, on short, lateral

ee. Twigs essentially terete; leaves of two kinds, either scale-like, or else awl-shaped, often both kinds on the same branch, not decurrent on the stem; fruit berry-like, bluis...

11. ii. Leaf-petioles about 1 inch long; leaves dull above; twigs

5. ii. Leaves pubescent or white-tomentose, at least beneath;

14. dd. Twigs essentially terete; leaves of two kinds, either

42. cc. Margin of leaf sinuate-crenate, rarely lobed; acorns on

12. d. Trunk and large branches armed with stout spines; leaflets

45. dd. Bark of trunk light to dark brown, smoothish or only

58. dd. Leaves finely and abundantly toothed; bark longitudinally

4. i. Leaves thin, coarsely but singly serrate; fruit a globular

53. d. Leaves 2-4 inches broad, thin, not pentagonally 5-lobed;

e. Leaves distinctly white-downy beneath; twigs appressed-hairy, at least near the tip; fruit hanging in pendulous racemes, persistent on the tree until autumn; seed portion wit...

3. ii. Leaves thin, long-pointed, not lustrous above, clustered

31. cc. Buds and twigs not conspicuously white-downy; twigs

38. dd. Cup of acorn saucer-shaped, inclosing only the base of the

e. Upper surface of leaves usually lustrous, especially on the lower branches; lowermost branches of trees growing in the open drooping nearly to the ground; nut about 1/2 inch...

59. d. Twigs strictly glabrous; buds glabrous; spherical flower

10. ll. Lower side of leaves glabrous; sap not milky; leaves

37. d. Cup of acorn top-shaped or cup-shaped, inclosing one-third

ee. Kernel of nut whitish; buds pubescent above the middle, not angular; inner bark of trunk red; trunk not provided with pins or stubs of branches near the ground. _Q. coccinea...

57. d. Leaves coarsely and sparsely toothed or notched; bark not

ee. Twigs slender; petioles not exuding a milky juice when cut; wings of fruit diverging only slightly; bark of the trunk deeply furrowed, often cleaving in long, thick plates....

63. dd. Lower sides of leaves paler than the upper;

8. mm. Trunk not fluted; fruit not inclosed within a

24. cc. Bark of trunk gray to nearly black; cones maturing in

33. cc. Buds red-brown; twigs long-hairy; fruit less than 1 inch

22. c. Leaves about 1 inch long, divergent; cones sessile,

25. c. Leaves about 1 inch long, divergent; cones sessile,

44. d. Bark of trunk ash-gray or nearly white, flaky; acorns

30. dd. Margin of leaves finely serrate; leaves less than 3 inches

40. cc. Leaves not cut by a pair of deep sinuses; branches not

48. d. Buds obtuse at the apex; trunk provided with pins or stubs

of dead branches near the ground; inner bark of trunk yellow; nut 1/2-3/4 inch long, inclosed for one-third to one-half of its length in a top-shaped cup; kernel of nut yellow....

36. dd. Leaf-lobes usually 3 (at apex of the leaf only); buds

49. dd. Buds acute at the apex; trunk not provided with pins or

stubs of branches near the ground; inner bark of trunk whitish; nut about 1 inch long, inclosed only at the base by a shallow, saucer-shaped cup; kernel of nut white. [2] _Q. ru...

65. cc. Terminal bud brownish, showing 4 pairs of scales in

28. d. Leaves broader than they are long, abruptly acuminate at

29. dd. Leaves longer than they are broad, more or less

39. c. Leaves cut nearly to the midrib by a pair of deep sinuses

47. cc. Buds hoary-tomentose, obtuse at the apex; cup-scales of

64. c. Terminal bud black or nearly so, showing 3 pairs of scales

41. c. Margin of leaf entire, or only slightly undulate; acorns on

19. mm. Trunk not fluted; catkins usually present in winter;

35. d. Leaf-lobes usually 7; buds hoary-tomentose; bark of trunk

60. dd. Twigs appressed-hairy, at least near the tip; buds somewhat

61. dd. Buds hoary-pubescent; bark sometimes almost black on the

15. dd. Spines one at each node; buds glabrous, not superposed;

7. mm. Lenticels inconspicuous; pith greenish; bark not separable

43. c. Bark on branches breaking into large, papery scales which

46. c. Buds rusty-hairy, acute at the apex; cup-scales of acorn

54. dd. Leaves 4-7 inches broad, thick, pentagonally 5-lobed; wings

16. d. Thorns usually branched, situated above the nodes; lateral

55. c. Lower sides of leaves and petioles distinctly downy, the

13. d. Twigs flattened; leaves all of one kind, scale-like,

23. c. Bark of trunk red-brown; cones maturing in second season,

26. c. Bark of trunk red-brown; cones maturing in second season,

9. l. Lower side of leaves more or less downy; sap milky; leaves

6. m. Lenticels conspicuous; pith whitish or brownish; bark

51. c. Leaf-lobes long and narrow, the sides of the terminal lobe

52. cc. Leaf-lobes short and broad, the sides of the terminal lobe

56. cc. Lower sides of leaves and petioles essentially glabrous,

2. i. Leaves thick, abruptly pointed, very lustrous above, not

18. m. Trunk fluted; catkins not present in winter; lenticels not