Juniperus squamata

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Juniperus squamata
Foliage of cultivar 'Meyeri'

Least Concern  (IUCN 3.1)[1]
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Gymnospermae
Division: Pinophyta
Class: Pinopsida
Order:
Cupressales
Family: Cupressaceae
Genus: Juniperus
Section:
Juniperus sect. Sabina
Species:
J. squamata
Binomial name
Juniperus squamata
'Blue Star'
Blue Star juniper shrub in Pennsylvania.

Juniperus squamata, the flaky juniper, or Himalayan juniper is a

family Cupressaceae, native to the Himalayas and China
.

It represents the provincial tree of Khyber Pakhtunkhwa (unofficial).

Description

It is an

monoecious.[2][3][4]

Taxonomy

Three to five varieties are accepted, with treatment differing between different authors:[2][3][4]

  • Juniperus squamata var. squamata – leaves mostly 5–9 mm. Throughout the standard range.
  • Juniperus squamata var. fargesii Rehder & E.H.Wilson – leaves mostly 3–5 mm. Confined to the eastern half of the range in China.
  • Juniperus squamata var. hongxiensis Y.F.Yu & L.K.Fu; often included in var. squamata.[2]
  • Juniperus squamata var. parviflora Y.F.Yu & L.K.Fu; often included in var. squamata.[2]

Juniperus morrisonicola Hayata from Taiwan is often treated as a synonym,[3] or a variety Juniperus squamata var. morrisonicola (Hayata) H.L.Li & H.Keng,[5] but is better treated as a distinct species as it has a distinct DNA profile.[2]

Etymology

The Latin specific epithet squamata means small, scale-like leaves.[6]

Distribution and habitat

It is found in (and native to) northeastern Afghanistan east to western Yunnan in southwestern China, with disjunct populations north to western Gansu, east to Fujian, and Taiwan. Recently, however, it was introduced to the United States in 1964 after being exported from the Netherlands.[7][8] It grows at altitudes from 1,600 to 4,900 m (5,200 to 16,100 ft).[2][3][4][1]

Cultivation

Juniperus squamata is widely grown as an ornamental plant in Europe and North America, valued for its bluish foliage and compact habit. The following cultivars have gained the Royal Horticultural Society's Award of Garden Merit:[9]

References

  1. ^
    doi:10.2305/IUCN.UK.2013-1.RLTS.T42254A2967233.en
    . Retrieved 12 November 2021.
  2. ^
    ISBN 1-4120-4250-X
  3. ^
    ISBN 1-84246-068-4
  4. ^ a b c Flora of China: Juniperus squamata
  5. ^ Gymnosperm Database: Juniperus squamata
  6. ISBN 9781845337315
    .
  7. ^ "Blue Star juniper - Juniperus squamata 'Blue Star' - PNW Plants". www.pnwplants.wsu.edu. Retrieved 2022-05-29.
  8. ^ "flaky juniper - Encyclopedia of Life". eol.org. Retrieved 2022-05-29.
  9. ^ "AGM Plants - Ornamental" (PDF). Royal Horticultural Society. July 2017. p. 56. Retrieved 14 March 2018.
  10. ^ "RHS Plant Selector - Juniperus squamata 'Blue Carpet'". Royal Horticultural Society. Retrieved 26 September 2020.
  11. ^ "RHS Plant Selector - Juniperus squamata 'Blue Star'". Royal Horticultural Society. Retrieved 26 September 2020.
  12. ^ "RHS Plant Selector - Juniperus squamata 'Holger'". Royal Horticultural Society. Retrieved 26 September 2020.
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