Picea smithiana

Morinda spruce
Morinda Spruce at Royal Botanic Garden Edinburgh
Scientific classification
Kingdom:Plantae
Division:Pinophyta
Class:Pinopsida
Order:Pinales
Family:Pinaceae
Genus:Picea
Species: P. smithiana
Binomial name
Picea smithiana

Picea smithiana, the morinda spruce[2][3][4] or West Himalayan spruce, is a spruce native to the western Himalaya and adjacent mountains, from northeast Afghanistan, northern Pakistan, India to central Nepal. It grows at altitudes of 2,400-3,600 m in forests together with deodar cedar, blue pine and pindrow fir.

Description

New growth, showing the exceptionally long needles of this species

Picea smithiana is a large evergreen tree growing to 40–55 m tall (exceptionally to 60 m), and with a trunk diameter of up to 1–2 m. It has a conical crown with level branches and usually pendulous branchlets.

The shoots are pale buff-brown, and glabrous (hairless). The leaves are needle-like, the longest of any spruce, 3–5 cm long, rhombic in cross-section, mid-green with inconspicuous stomatal lines. The cones are broad cylindric-conic, 9–16 cm long and 3 cm broad, green when young, maturing buff-brown and opening to 5–6 cm broad 5–7 months after pollination; the scales are stiff and smoothly rounded.

Morinda spruce is a popular ornamental tree in large gardens in western Europe for its attractive pendulous branchlets. It is also grown to a small extent in forestry for timber and paper production, though its slower growth compared to Norway spruce reduces its importance outside of its native range. The name morinda derives from the tree's name in Nepali.

References

  1. ↑ Farjon, A. & Rushforth, K. (2013). "Picea smithiana". The IUCN Red List of Threatened Species. IUCN. 2013: e.T42338A2973761. doi:10.2305/IUCN.UK.2013-1.RLTS.T42338A2973761.en. Retrieved 12 December 2017.
  2. ↑ "BSBI List 2007". Botanical Society of Britain and Ireland. Archived from the original (xls) on 25 January 2015. Retrieved 17 October 2014.
  3. ↑ "Picea smithiana". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 2018-08-09.
  4. ↑ Huxley, A., ed. (1992). The new Royal Horticultural Society dictionary of gardening.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.