Girish Mahajan (Editor)

Larix lyallii

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Kingdom
  
Class
  
Pinopsida

Family
  
Scientific name
  
Larix lyallii

Division
  
Pinophyta

Order
  
Genus
  
Larix

Rank
  
Species

Larix lyallii Larix lyallii alpine larch description The Gymnosperm Database

Similar
  
Larix occidentalis, Pinus albicaulis, Abies lasiocarpa, Larix griffithii, Tamarack

Larix lyallii, the subalpine larch, or simply alpine larch, is a deciduous, coniferous tree native to northwestern North America. It lives at very high altitudes—1,800 to 2,400 m (5,900 to 7,900 ft)—in the Rocky Mountains of Idaho, Montana, British Columbia, and Alberta. There is a disjunct population in the Cascade Range of Washington.

Contents

Larix lyallii Larix lyallii Alpine larch subalpine larch

Subalpine larch is hardy and can survive very low temperatures in thin rocky soils, which is why the tree is often found near treeline. However, it can grow in a variety of soils and with or without shade, as long as the soil is moist but well-drained.

Larix lyallii httpsuploadwikimediaorgwikipediacommonsthu

Description

Larix lyallii The Wild Garden Hansen39s Northwest Native Plant Database

Larix lyallii is a small tree, growing from 10 to 25 m (33 to 82 ft) tall and shorter at higher elevations. It has a straight trunk with a sparse and somewhat conical crown. The branches are horizontal to the trunk, irregularly spaced and twisted. The twigs are finely hairy. The needles are four-angled, 20 to 35 mm (0.79 to 1.38 in) long and crowded in groups of 30 to 40 on short spurs. They are pale blue-green and deciduous, turning golden yellow in autumn.

Larix lyallii Larix lyallii Fact Sheet

The seed cones, 2.5 to 4 cm (0.98 to 1.57 in) long, are red-purple when young but become dark brown with age. They have thin scales and narrow bracts that extend over the scales. The bark is thin and turns from yellow-gray to dark red-brown with age. It also becomes deeply furrowed into small, scaly plates.

Larix lyallii FileLarix lyallii MountFrosty1jpg Wikimedia Commons

The tree is also one of the longest lived tree species. There is record of a specimen in Kananaskis, Alberta which is 1943 years old, the oldest tree in Canada.

Uses

The bark contains tannin and the wood is strong, heavy, and durable.

Larix lyallii WTU Herbarium Image Collection Burke Museum

References

Larix lyallii Wikipedia


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