''Pinus henryi'', or Henry's pine, is a species of

conifer Conifers () are a group of conifer cone, cone-bearing Spermatophyte, seed plants, a subset of gymnosperms. Scientifically, they make up the phylum, division Pinophyta (), also known as Coniferophyta () or Coniferae. The division contains a sin ...

in the family

Pinaceae The Pinaceae (), or pine family, are conifer trees or shrubs, including many of the well-known conifers of commercial importance such as Cedrus, cedars, firs, Tsuga, hemlocks, Pinyon_pine, piñons, larches, pines and spruces. The family is incl ...

Description

''Pinus henryi'' is a

monoecious Monoecy (; adj. monoecious ) is a sexual system in seed plants where separate male and female cones or flowers are present on the same plant. It is a monomorphic sexual system comparable with gynomonoecy, andromonoecy and trimonoecy, and contras ...

evergreen In botany, an evergreen is a plant which has Leaf, foliage that remains green and functional throughout the year. This contrasts with deciduous plants, which lose their foliage completely during the winter or dry season. Consisting of many diffe ...

tree, reaching up to tall and

diameter at breast height Diameter at breast height, or DBH, is a standard method of expressing the diameter of the trunk or bole of a standing tree. DBH is one of the most common dendrometric measurements. Tree trunks are measured at the height of an adult's breast, ...

, typically with a single straight trunk. The bark on mature ''P. henryi'' is scaly, fissured, and broken into large irregular plates, which are gray-brown in color and flaky. The twigs are thick, with new shoots appearing reddish-brown in color. The needles are long and in fascicles of 2, persisting for 2–3 years before falling off.

Pollen cone A conifer cone, or in formal botanical usage a strobilus, : strobili, is a seed-bearing organ on gymnosperm plants, especially in conifers and cycads. They are usually woody and variously conic, cylindrical, ovoid, to globular, and have scales ...

s appear in clusters at the base of new shoots, and are only 2 cm long. Seed cones are thin and woody, and bear a short stout spine.

Distribution

''Pinus henryi'' is typically considered to be

endemic Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...

China China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...

, found in the

Chongqing ChongqingPostal Romanization, Previously romanized as Chungking ();. is a direct-administered municipality in Southwestern China. Chongqing is one of the four direct-administered municipalities under the State Council of the People's Republi ...

Hubei Hubei is a province of China, province in Central China. It has the List of Chinese provincial-level divisions by GDP, seventh-largest economy among Chinese provinces, the second-largest within Central China, and the third-largest among inland ...

Hunan Hunan is an inland Provinces of China, province in Central China. Located in the middle reaches of the Yangtze watershed, it borders the Administrative divisions of China, province-level divisions of Hubei to the north, Jiangxi to the east, Gu ...

Shaanxi Shaanxi is a Provinces of China, province in north Northwestern China. It borders the province-level divisions of Inner Mongolia to the north; Shanxi and Henan to the east; Hubei, Chongqing, and Sichuan to the south; and Gansu and Ningxia to t ...

, and

Sichuan Sichuan is a province in Southwestern China, occupying the Sichuan Basin and Tibetan Plateau—between the Jinsha River to the west, the Daba Mountains to the north, and the Yunnan–Guizhou Plateau to the south. Its capital city is Cheng ...

provinces. Some sources also place it in the Vietnamese provinces of

Ha Giang Ha may refer to: Agencies and organizations * Health authority, a former type of administrative organisation of the NHS in England and Wales * Hells Angels Motorcycle Club * Highways Agency (renamed ''Highways England'', now ''National Highways'' ...

and

Bac Kan BAC or Bac may refer to: Arts and entertainment Arts centres and arts councils * Balochistan Arts Council, in Quetta, Pakistan * Baryshnikov Arts Center, in Manhattan, New York City * Battersea Arts Centre, London, England * Beirut Art Cente ...

. ''P. henryi'' occurs in subtropical mountains, typically at elevations of , primarily on dry, sunny slopes.

References

External links

* * henryi Endemic flora of China Trees of China Near threatened flora of Asia Taxonomy articles created by Polbot {{conifer-stub