Cupressaceae

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cupressaceae

Transcript of Cupressaceae

  • 1. Cupressaceae (Cypress family)

2. 3. http:// dendro.cnre.vt.edu/dendrology/syllabus/factsheet.cfm?ID =204

  • Port-Orford-cedar (Oregon Cedar)Cupressaceae Chamaecyparis lawsoniana
  • Leaf: Persistent, scale-like, and arranged in decussate pairs, blue-green with obvious white "X's" on the underside. Individuals leaves are typically 1/16 to 1/8 inch long and sets of four are about as long as they are wide; arranged in flattened, well organized sprays; dead leaves fall in sprays. Flower: Monoecious; male cones small and yellow to red, borne terminally; female cones small, round and bluish-green. Fruit: Cones are small (about 1/4 inch diameter) and round with deeply wrinkled peltate scales; blue-green when young and brown when mature. Twig: Distinctly flattened when young, but eventually round, reddish brown bark. Bark: Brown, weathers to a gray-brown; mature bark is fibrous, ridged, and deeply furrowed; may reach 4 to 8 inches thick near the base. Form: Large, uniform, evergreen trees that commonly reach 125 to 200 feet tall and 3 to 6 feet in diameter; beautiful pyramidal form with frond-like branches.
  • 303W
  • Gymnosperm

4. 5. http://dendro.cnre.vt.edu/dendrology/syllabus2/factsheet.cfm?ID=783

  • Monterey cypress Cupressaceae Cupressus macrocarpa
  • Leaf: Evergreen, scale-like, blunt tipped, tight and crowded on the twig in opposite pairs resulting in a square twig, mostly lacking gland; bright green. Flower: Monoecious; males are small, pale yellow-green at ends of branch tips, often in abundance; females small light green near branch tips. Fruit: Dry, nearly round, woody, serotinous (open with fire) cones, 1 to 1 1/2 inches in diameter, 8 to 12 scales usually with a small, raised point in center, initially glaucous and green but turning dull brown when mature; mature in two growing seasons and remain on branches for several years. Twig: Stout (for cypress), square, covered in scale-like leaves, overall a thick, coarse texture. Bark: Fibrous with shallow, irregular furrows, gray. Form: A medium sized tree reaching up to 80 feet tall, with a straight, narrow crown when young but spreading dramatically with age. When found along the coast, the tree and crown are typically wind swept and very picturesque; however, when planted in protected areas the tree will grow straight with a much narrower crown.
  • 310W
  • Gymnosperm

6. 7. http://dendro.cnre.vt.edu/dendrology/syllabus2/factsheet.cfm?ID=660

  • Utah juniper Cupressaceae Juniperus osteosperma
  • Leaf: Evergreen, scale-like, most are tight to the twig in opposite pairs resulting in a slightly square twig, on vigorous shoots a few are awl-like and point away from the twig, no gland so leaves typically lack any resin; yellow-green. Flower: Usually monecious; males are small pale yellow in large clusters at ends of twigs; females are small, round pale green. Fruit: Berry-like cones, round, 1/4 to 1/2 inch in diameter, bluish glaucous when young but turning reddish brown and dry when mature, usually 2 seeds per cone (may have 1), mature in two growing seasons. Twig: Slender, initially covered with tight, yellow-green, scale-like leaves and somewhat angular, later turning reddish brown. Bark: Gray with very irregular furrows and scaly ridges; stays rather thin. Form: Small, shrubby tree or large bush up to 25 feet tall; typically branches low and develops a rounded crown.
  • 316W
  • Gymnosperm

8. 9. http:// dendro.cnre.vt.edu/dendrology/syllabus/factsheet.cfm?ID =165

  • Rocky Mountain juniper Cupressaceae Juniperus scopulorum
  • Leaf: Small (1/8 inch), scale-like and tight against the branches; green to gray-green. Back sides of needles bear inconspicuous glands. Flower: Dioecious; both male and female flowers are small (1/8 inch) and occur at branch tips; males oblong and females nearly round. Males are nearly yellow, females greener. Fruit: Round, bluish berry-like cones (1/3 inch in diameter), covered in glaucous bloom, mature in two seasons. Twig: Covered in green scale-like needles, later turning light brown. Bark: Thin and quite scaly with long narrow ridges, reddish brown but turns gray when aged and weathered. Form: Small tree or large shrub; shape is variable but often short with a round crown.
  • 318W
  • Gymnosperm

10. 11. http:// dendro.cnre.vt.edu/dendrology/syllabus/factsheet.cfm?ID =97

  • eastern redcedar Cupressaceae Juniperus virginiana
  • Leaf: Evergreen, very small, with two types of leaves (often on the same tree), scale-like leaves 1/16 inch long, dark green, with 4 sides held tightly to twig and longer (1/4 inch), dark blue-green needle-like leaves that are more common on young trees and fast growing shoots. Flower: Dioecious; but occasionally monoecious; males are small, yellow-brown, occurring in large groups; females are light blue-green. Fruit: Berry-like cones, light green in spring, turning dark blue and glaucous at maturity, about 1/4 inch in diameter, appearing in spring and maturing in the fall. Twig: Green for several years, covered in scales, later turning brown. Bark: Red-brown in color, exfoliating in long, fibrous strips, often ashy gray where exposed. Form: A small tree with a dense ovoid or columnar crown reaching up to 60 feet tall.
  • 310E
  • Gymnosperm

12. 13. http:// dendro.cnre.vt.edu/dendrology/syllabus/factsheet.cfm?ID =118

  • northern white-cedar Cupressaceae Thuja occidentalis
  • Leaf: Evergreen, scale-like, on main shoots, 1/4 inch long with long points. Lateral shoots are flattened, 1/8 inch long with short points. Flower: Monoecious; solitary, females green with 4 to 6 scales; males are green tipped with brown and globose. Fruit: A cone, 1/2 inch long, oblong, borne upright on the branches, scales are leathery, red-brown and rounded, with a small spine on the tip. Twig: New growth is green and scale-like, turning brown, occurring in very flattened foliar sprays. Bark: Fibrous, red-brown, weathering to gray; diamond-shaped patterns are usually apparent. Form: A small to medium sized tree shaped like an arrowhead - a pyramid with a broad base and a small, round top, often with several main trunks.
  • 312E
  • Gymnosperm

14. 15. http:// dendro.cnre.vt.edu/dendrology/syllabus/factsheet.cfm?ID =260

  • western redcedar Cupressaceae Thuja plicata
  • Leaf: Persistent, scale-like, and arranged in decussate pairs; yellow-green on top with a distinctive butterfly shaped bloom pattern on the underside. Individual leaves are typically 1/16 to 1/8 inch long and sets of four are roughly square. Foliage arranged in flattened sprays, dead leaves fall in sprays. Flower: Monoecious; male cones are small and inconspicuous; female cones are small, reddish purple, and borne near the tips of branches. Fruit: Small woody cones (1/2 inch long) with thin, valvate scales arranged in 5 to 6 decussate pairs; typically upturned on the branches. Twig: Younger twigs are flattened while older twigs are round, slender, flexible, and slightly zigzag; reddish brown. Bark: Thin (1/2 to 3/4 inch thick), fibrous, stringy, and reddish brown; finely ridged and furrowed; intertwined; comes off in long strips. Form: A large evergreen conifer that grows to 200 feet tall and 10 feet in diameter (sometimes more). Has an open, pyramidal crown with pendulous, frond-like branches. Base of trunk is often swollen and fluted.
  • 321W
  • Gymnosperm