Comments
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fornecido por eFloras
The timber is used for construction, pit props, railway sleepers, and making furniture, and the bark yields tannins. The tree is also used for afforestation.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Description
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fornecido por eFloras
Trees to over 20 m tall; trunk to 80 cm d.b.h.; bark gray-brown or dark brown, deeply fissured longitudinally; long branchlets initially reddish brown, light brown, or yellowish brown; short branchlets 6-8 mm in diam., nearly smooth, with remnants of bud scales and rings of revolute scales bases; winter buds ovoid-globose or globose, not resinous. Leaves 2.5-5.5 cm × 1-1.8 mm, keeled abaxially and toward base adaxially. Seed cones maturing brown or light brown, cylindric or cylindric-ellipsoid, 5-11 × 2.2-3 cm. Seed scales obovate-square, ± flat, 1.1-1.4 × 1.1-1.4 cm at middle of cones, pubescent toward base abaxially, margin denticulate toward apex, apex truncate or slightly emarginate. Bracts ovate- or obovate-lanceolate, longer than seed scales, 5-7 mm at widest part, obviously reflexed. Seeds grayish white, with irregular purplish spots, obliquely obovoid, ca. 10 mm including wing. Pollination Apr-May, seed maturity Oct.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Distribution
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fornecido por eFloras
S and E Xizang [Bhutan, Nepal, Sikkim]
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Habitat
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Mountains; 3000-4100 m.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Synonym
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Larix griffithiana Carriere; Pinus griffithiana (Carriere) Voss; P. griffithii (J. D. Hooker) Parlatore (1868), not M’Clelland (1854).
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Cyclicity
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fornecido por Plants of Tibet
Pollination from April to May; seed maturity in October.
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- Wen, Jun
Diagnostic Description
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fornecido por Plants of Tibet
Larix griffithii is close relative of Larix speciosa, but differs from the latter in its bracts obviously reflexed (vs. spreading and recurved), obovate- or ovate-lanceolate (vs. lanceolate), 5-7 mm (vs. 3.5-5.5 mm) at widest part, short branchlets slender (vs. stout), only bases of scales persistent (vs. scales persistent, revolute).
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- Wen, Jun
Distribution
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Inglês
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fornecido por Plants of Tibet
Larix griffithii is occurring in S and E Xizang of China, Bhutan, Nepal, Sikkim.
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- Wen, Jun
Evolution
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fornecido por Plants of Tibet
Phylogeny of Larix was constructed from the sequence analysis of the paternally inherited cpDNA trnT- trnF (Wei and Wang, 2003). The most parsimonious tree split Larix into three sister clades: one clade was composed of two North American species, the other two were short-bracted and long-bracted (Larix griffithii in this clade) species of Eurasia respectively except that L. sibirica was clustered in the long-bracted clade.
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- Wen, Jun
General Description
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Inglês
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fornecido por Plants of Tibet
Trees to over 20 m tall; trunk to 80 cm d.b.h.; bark gray-brown or dark brown, deeply fissured longitudinally; long branchlets initially reddish brown, light brown, or yellowish brown; short branchlets 6-8 mm in diameter, nearly smooth, with remnants of bud scales and rings of revolute scales bases; winter buds ovoid-globose or globose, not resinous. Leaves 2.5-5.5 cm long, 1-1.8 mm wide, keeled abaxially and toward base adaxially. Seed cones maturing brown or light brown, cylindric or cylindric-ellipsoid, 5-11 cm long, 2.2-3 cm wide. Seed scales obovate-square, ± flat, 1.1-1.4 cm long, 1.1-1.4 cm wide at middle of cones, pubescent toward base abaxially, margin denticulate toward apex, apex truncate or slightly emarginate. Bracts ovate- or obovate-lanceolate, longer than seed scales, 5-7 mm at widest part, obviously reflexed. Seeds grayish white, with irregular purplish spots, obliquely obovoid, ca. 10 mm including wing.
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- Wen, Jun
Genetics
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fornecido por Plants of Tibet
The chromosomal number of Larix griffithii is 2n = 24 (Mehra, 1988).
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- Wen, Jun
Habitat
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fornecido por Plants of Tibet
Growing in mountains; 3000-4100 m.
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- Wen, Jun
Threats
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fornecido por Plants of Tibet
Larix griffithii is reported be lower risk/least concern (Conifer Specialist Group, 1998).
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- Wen, Jun
Uses
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Inglês
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fornecido por Plants of Tibet
The timber is used for construction, pit props, railway sleepers, and making furniture, and the bark yields tannins. The tree is also used for afforestation.
- licença
- cc-by-nc
- direitos autorais
- Wen, Jun
Larix griffithii
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Inglês
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fornecido por wikipedia EN
Larix griffithii, the Sikkim larch, is a species of larch, native to the eastern Himalaya in eastern Nepal, Sikkim, western Bhutan and southwestern China (Xizang, Yunnan), growing at 1,800–4,100 metres (5,900–13,500 ft) in altitude.[1]
It is sometimes called the Himalayan larch, not to be confused with Larix potaninii var. himalaica, which is generally known as the 'Langtang larch'.
Description
It is a medium-sized deciduous coniferous tree reaching 20–25 m (66–82 ft) tall, with a trunk up to 0.8 m (2 ft 7 in) in diameter. The crown is slender conic; the main branches are level to upswept, the side branchlets pendulous from them. The shoots are dimorphic, with growth divided into long shoots (typically 10–50 cm (4–20 in) long) and bearing several buds, and short shoots only 1–2 mm (0.039–0.079 in) long with only a single bud. The leaves are needle-like, light glaucous green, 2–4 cm (1–2 in) long; they turn bright yellow to orange before they fall in the autumn, leaving the pale yellow-brown shoots bare until the next spring.
The cones are erect, ovoid-conic, 4–7.5 cm (2–3 in) long, with 50-100 seed scales, each seed scale with a long exserted and reflexed basal bract; they are dark purple when immature, turning dark brown and opening to release the seeds when mature, 5–7 months after pollination. The old cones commonly remain on the tree for many years, turning dull grey-black.[2]
Larix griffithii female cone
Taxonomy
It has 2 accepted variants;[3]
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Larix griffithii var. griffithii
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Larix griffithii var. speciosa (W.C.Cheng & Y.W.Law) Farjon
Synonyms of the variants; include Abies griffithiana J. D. Hooker ex Lindley & Gordon and Larix griffithiana hort. ex Carrière.
Trees to the northeast of the range in eastern Bhutan and Xizang have been separated as Larix kongboensis (Mill 1999); they differ in smaller cones 3–5 cm (1–2 in) long. This taxon has been accepted by the Flora of China but not widely elsewhere.[3][4]
References and external links
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- Wikipedia authors and editors
Larix griffithii: Brief Summary
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fornecido por wikipedia EN
Tree in habitat
Larix griffithii, the Sikkim larch, is a species of larch, native to the eastern Himalaya in eastern Nepal, Sikkim, western Bhutan and southwestern China (Xizang, Yunnan), growing at 1,800–4,100 metres (5,900–13,500 ft) in altitude.
It is sometimes called the Himalayan larch, not to be confused with Larix potaninii var. himalaica, which is generally known as the 'Langtang larch'.
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- cc-by-sa-3.0
- direitos autorais
- Wikipedia authors and editors
Tree in habitat 
