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Like most members of the white pine group, Pinus subgenus Strobus, the leaves ("needles") are coniferous, occurring in fascicles (bundles) of five, or rarely three or four, with a deciduous sheath. The leaves are flexible, bluish-green, finely serrated , and 5–13 cm (2–5 in) long.
Western white pine is a large tree, regularly growing to 30–50 metres (98–164 ft) tall. It is a member of the white pine group, Pinus subgenus Strobus, and like all members of that group, the leaves ('needles') are in fascicles (bundles) of five, [5] with a deciduous sheath.
In its natural range, the larvae feed on several species of pine including Pinus sylvestris, Pinus mugo, Pinus cembra and Pinus sibirica as well as such introduced species as Pinus strobus and Pinus contorta. In North America, as well as Pinus strobus, it feeds on Pinus resinosa, Pinus banksiana and P. sylvestris.
Pinus, the pines, is a genus of approximately 111 extant tree and shrub species. The genus is currently split into two subgenera: subgenus Pinus (hard pines), and subgenus Strobus (soft pines). Each of the subgenera have been further divided into sections based on chloroplast DNA sequencing [1] and whole plastid genomic analysis. [2]
Pinus monticola × P. peuce – Western white pine × Balkan pine; Pinus peuce × P. strobus – Balkan pine × eastern white pine; Pinus peuce × P. parviflora – Balkan pine × Japanese white pine; Pinus flexilis × P. wallichiana – Limber pine × Himalayan pine; Pinus flexilis × P. strobus [11] – Limber pine × eastern white pine
Pinus maximartinezii, called Martinez pinyon, big-cone pinyon [1] or maxipiñon, [2] is a pine in the pinyon pine group, native to west-central Mexico. Description [ edit ]
Limber pine (Pinus flexilis), another of these species from western North America, was also sometimes known as White Pine; Chinese white pine (Pinus armandii), a species native to China; Japanese white pine (Pinus parviflora), a species native to Japan; Vietnamese white pine (Pinus dalatensis), a species native to Vietnam and Laos
The main host for the larvae of this species is the white pine (Pinus strobus), but it also occurs on the pitch pine (Pinus rigida), short-leaf pine (Pinus echinata), the red pine (Pinus resinosa) and the Swiss mountain pine (Pinus mugo). [4]