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Cupressocyparis leylandii

(Leyland Cypress)

Overview

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Excellent fast-growing screening evergreen .

Common Names

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Common Names in English:

Leyland Cypress, Leyland-Cypress

Description

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Family Cupressaceae

Trees or shrubs evergreen , monoecious or dioecious. Leaves decussate or in whorls of 3, scalelike and then often dimorphic with flattened facial leaves and keeled lateral leaves, or needlelike particularly in juvenile plants , often with an abaxial resin gland . Pollen cones terminal or axillary , solitary, maturing and shed annually; microsporophylls 6-16, decussate or whorled , each bearing (2 or) 3-6(-9) pollen sacs ; pollen wingless. Seed cones usually terminal, solitary, globose , ovoid , or oblong , dehiscent or indehiscent when mature in 1st or 2nd(or 3rd) year; cone scales developing after ovules originate in bract axils; bracts almost completely enveloped by cone scales, free only at apex; ovules 1-numerous per bract axil, erect ; cone scales of mature cones 3-16, flat or peltate, woody, leathery, or succulent, 1-20-seeded. Seeds winged or not; wings derived from seed coat . Cotyledons usually 2, rarely 3-6. Germination epigeal.

Nineteen genera and ca. 125 species: worldwide; eight genera (one introduced ) and 46 species (16 endemic, 13 introduced) in China.[1]

Physical Description

Habit: Evergreen . Columnar to pyramidal form.

Foliage: Summer foliage: Fine feathery foliage . Bluish-green needles all year.

Size/Age/Growth

Growth Rate: Very fast. • Size: 30' tall, 10' wide.

Biology

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Growth

Soil: Needs good drainage .

Sunlight: Sun Exposure: Full sun to part shade.

Taxonomy

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Notes

Name Status: Accepted Name .

Parentage: Chamaecycparis nootkatensis × Cupressus macrocarpa

An accepted name in the RHS Horticultural Database.

Place of publication : Kew hand-list Conif. ed. 4:37. 1938

Name verified on 20-Mar-1996 by ARS Systematic Botanists. Last updated: 28-Jan-2005

Similar Species

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Members of the genus Cupressocyparis

ZipcodeZoo has pages for 3 species, subspecies, varieties, forms, and cultivars in this genus:

C. leylandii (Leyland Cypress) · C. leylandii 'Emerald Isle' (Emerald Isle Leyland Cypress) · C. leylandii 'Naylor's Blue' (Leyland Cypress)

More Info

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Further Reading

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Notes

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Contributors

Data Sources

Accessed through GBIF Data Portal November 18, 2007:

Identifiers

Footnotes

  1. Liguo Fu, Yong-fu Yu, Robert P. Adams & Aljos Farjon "Cupressaceae". in Flora of China Vol. 4 Page 62. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]
Last Revised: 2014-04-15