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CUPRESSACEAE

CYPRESS FAMILY

Jim A. Bartel

Shrub, tree, evergreen, monoecious or dioecious
Leaves cauline, opposite and 4-ranked or whorled in 3's and 6-ranked, generally scale-like, decurrent, completely covering young stems
Pollen cone small, axillary or terminal
Seed cone ± fleshy to woody, generally hard at maturity; scales opposite or whorled
Seeds 1–many per scale, generally angled or winged, generally wind-dispersed
Genera in family: 17 genera, ± 120 species: worldwide; all North America genera cultivated
Reference: [Elias 1980 Complete Trees North America]
Juvenile leaves needle- or awl-like, sometimes present in ± mature plants, especially in response to grazing or infection, especially in Cupressus, Juniperus.

CUPRESSUS

CYPRESS

Large shrub, tree, often pyramidal in youth, monoecious
Stem: young shoots generally cylindric (sometimes 4-angled or flat), generally arrayed in 3-dimensional clusters
Leaves opposite, 4-ranked, scale-like, closely appressed, overlapping
Pollen cone generally yellow
Seed cone 6–50 mm, woody, ± spheric to widely cylindric, maturing 1st or 2nd year, often closed > 2 years; scales 6–12, peltate, abutting, shield- or wedge-shaped; projection often present, small, pointed, generally less visible in age
Seeds 2–many per scale, flat, winged; cotyledons 2–5
Chromosomes: 2n=22 for all reports
Species in genus: ± 22 species: w North America, Eurasia
Etymology: (Latin: cypress)
Reference: [Wolf 1948 Aliso 1:1–250]

Native

C. nootkatensis D. Don

YELLOW CYPRESS, ALASKA CEDAR

Tree 20–30 m, pyramidal in youth
Stem: trunk < 6 m diam; bark 1–2 cm thick, gray to purple-brown, fissured, scaly; young shoots ± 4-sided, arrayed in flat, pendent clusters
Leaf green, not glaucous; glands generally obscure; lateral leaf tips generally parallel to axis of attachment or diverging
Pollen cone 2–3 mm, 2–3 mm diam, spheric; scales 4–5; pollen sacs 2 per scale
Seed cone 6–12 mm, spheric, ash-gray; scales generally 4–6, projection ± 0
Seeds 2–5 per scale, 3–4 mm, brown to red-brown
Ecology: Cool, moist, forested, well-drained mtn slopes
Elevation: 650–2500 m.
Bioregional distribution: Klamath Ranges
Distribution outside California: to Alaska
Synonyms: Chamaecyparis n. (D. Don) Spach

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