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''Calocedrus macrolepis'' (Chinese incense-cedar; ) is a conifer native to southwest China (
It is closely related to '' Calocedrus formosana'', with the latter often treated as a
Guangdong
Guangdong (, ), alternatively romanized as Canton or Kwangtung, is a coastal province in South China on the north shore of the South China Sea. The capital of the province is Guangzhou. With a population of 126.01 million (as of 2020) ...
west to Yunnan
Yunnan , () is a landlocked province in the southwest of the People's Republic of China. The province spans approximately and has a population of 48.3 million (as of 2018). The capital of the province is Kunming. The province borders the C ...
), northern Vietnam
Vietnam or Viet Nam ( vi, Việt Nam, ), officially the Socialist Republic of Vietnam,., group="n" is a country in Southeast Asia, at the eastern edge of mainland Southeast Asia, with an area of and population of 96 million, making i ...
, northern Laos, extreme northern Thailand
Thailand ( ), historically known as Siam () and officially the Kingdom of Thailand, is a country in Southeast Asia, located at the centre of the Indochinese Peninsula, spanning , with a population of almost 70 million. The country is b ...
and northeastern Myanmar
Myanmar, ; UK pronunciations: US pronunciations incl. . Note: Wikipedia's IPA conventions require indicating /r/ even in British English although only some British English speakers pronounce r at the end of syllables. As John Wells explai ...
.Farjon, A. (2005). ''Monograph of Cupressaceae and Sciadopitys''. Royal Botanic Gardens, Kew.
It is a medium-size tree to 25–35 m tall, with a trunk up to 2 m diameter. The bark is orange-brown weathering greyish, smooth at first, becoming fissured and exfoliating in long strips on the lower trunk on old trees. The foliage is produced in flattened sprays with scale-like leaves 1.5–8 mm long; they are arranged in opposite decussate pairs, with the successive pairs closely then distantly spaced, so forming apparent whorls of four; the facial pairs are flat, with the lateral pairs folded over their bases. The upper side of the foliage sprays is glossy green without stomata, the underside is white with dense stomata.
The seed cones
A conifer cone (in formal botanical usage: strobilus, plural strobili) is a seed-bearing organ on gymnosperm plants. It is usually woody, ovoid to globular, including scales and bracts arranged around a central axis, especially in conifers an ...
are 10–20 mm long, pale purple with a whitish wax coating, with four (rarely six) scales arranged in opposite decussate pairs; the outer pair of scales each bears two winged seed
A seed is an embryonic plant enclosed in a protective outer covering, along with a food reserve. The formation of the seed is a part of the process of reproduction in seed plants, the spermatophytes, including the gymnosperm and angiospe ...
s, the inner pair(s) usually being sterile; the cones are borne on a 1–2 cm long peduncle covered in very small (1 mm) scale leaves. The cones turn brown when mature about 8 months after pollination. The pollen cones are 4–8 mm long.
It is closely related to '' Calocedrus formosana'', with the latter often treated as a variety
Variety may refer to:
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* ''Variety'' (1935 film), ...
of ''C. macrolepis''. They differ most obviously in the shorter cone stem, only 5 mm long, of ''C. formosana''.
The species is still fairly widespread and frequent in the wild, though threatened by over-harvesting
Overexploitation, also called overharvesting, refers to harvesting a renewable resource to the point of diminishing returns. Continued overexploitation can lead to the destruction of the resource, as it will be unable to replenish. The term ap ...
for its valuable wood; it is also extensively planted within its native range for wood production. It is categorised by the IUCN as Vulnerable.
See also
*Cedar wood
Cedar is part of the English common name of many trees and other plants, particularly those of the genus ''Cedrus''.
Some botanical authorities consider the Old-World ''Cedrus'' the only "true cedars". Many other species worldwide with similarl ...
References
{{Taxonbar, from=Q141100 macrolepis Trees of China Trees of Indo-China Vulnerable plants