All Floras      Advanced Search
FOC Vol. 4 Page 65 Login | eFloras Home | Help
FOC | Family List | FOC Vol. 4 | Cupressaceae

5. Cupressus Linnaeus, Sp. Pl. 2: 1002. 1753.

柏木属 bai mu shu

Trees (rarely shrubs) evergreen, monoecious; branchlets ascending, rarely pendulous, often decussately arranged, terete or 4-angled in cross section. Leaves decussate, 4-ranked; juvenile leaves needlelike; adult leaves scalelike, with an abaxial resin gland, usually not dimorphic along branchlets. Pollen cones ovoid or oblong; microsporophylls 6-16, each with 2-6 pollen sacs. Seed cones terminal, solitary, globose or subglobose, dehiscent when mature in 2nd year; cone scales 8-16, decussate, peltate, woody, each fertile scale bearing 3-20 seeds; free bract apex a short mucro. Seeds slightly flattened, ridged, with lateral, narrow wings. Cotyledons 2-5.

About 17 species: N Africa, Asia, S Europe, SW North America; nine species (four endemic, four introduced) in China.

Cupressus cashmeriana Royle ex Carrière (Traité Gén. Conif., ed. 2, 1: 161. 1867) known with certainly only from Bhutan, might possibly extend into China, in SE Xizang. That is if Cupressus assamica Silba (J. Intern. Conifer Preserv. Soc. 1: 19. 1994) described from SE Xizang with Kingdon Ward 12449 (BM) as the holotype, is indeed a synonym of C. casmeriana, as was given by A. Farjon (World Checkl. Bibliogr. Conif. 45. 1998).

1 Branchlets flattened; seed cones 0.8-1.5 cm in diam.; seeds 3-5(or 6) per cone scale   9 Cupressus funebris
+ Branchlets terete or 4-angled; seed cones 1-3 cm in diam.; seeds more than 8 per cone scale.   (2)
2 (1) Branchlets terete.   (3)
+ Branchlets 4-angled.   (5)
3 (2) Branchlets loosely or densely arranged, ultimate ones pendulous or irregularly spreading, slender, 1-1.4 diam.; seed cones dark grayish brown at maturity, 1-1.8 cm in diam.   6 Cupressus torulosa
+ Branchlets densely arranged, ultimate ones spreading, ascending, or drooping but not pendulous, stout, 1.2- 2 mm in diam.; seed cones brown or reddish brown at maturity, 1.2-2 cm in diam.   (4)
4 (3) Branchlets not glaucous; bracts with a small, free mucro at apex   7 Cupressus chengiana
+ Branchlets often glaucous; bracts with a prominent, large, free mucro at apex   8 Cupressus gigantea
5 (2) Leaves with a conspicuous abaxial gland   5 Cupressus arizonica
+ Leaves without a conspicuous abaxial gland.   (6)
6 (5) Leaves green, not glaucous.   (7)
+ Leaves bluish green or grayish green, glaucous.   (8)
7 (6) Leaves obtuse or subacute at apex; seed cones 2-3 cm in diam.; cone scales 8-14   3 Cupressus sempervirens
+ Leaves acute at apex; seed cones 1-1.5 cm in diam.; cone scales 6-10   4 Cupressus goveniana
8 (6) Seed cones with ca. 12 cone scales; branchlets stout, ultimate ones 1.5-2 mm in diam.   8 Cupressus gigantea
+ Seed cones with 6-10 seed scales; branchlets thin, ultimate ones 0.8-1 mm in diam.   (9)
9 (8) Branchlets spreading or drooping but not pendulous; seed cones 1.5-3.2 cm in diam., with (6-)8-10 cone scales   1 Cupressus duclouxiana
+ Branchlets pendulous; seed cones 1-1.5 cm in diam., with 6-8 cone scales   2 Cupressus lusitanica

  • List of lower taxa


    Related Objects  
  • PDF File
  • PDF

  • Flora of China @
    Browse by
    Advanced Search

    Flora of China Home




     |  eFlora Home |  People Search  |  Help  |  ActKey  |  Hu Cards  |  Glossary  |