L., Pinaceae |
|
Present on Pacific Islands? yes
Primarily a threat at high elevations? yes
Risk assessment results: High risk, score: 9 (Go to the risk assessment).
Common name(s): [more details]
Chinese: bei mei qiao song |
English: Weymouth pine, eastern white pine, northern white pine, soft pine, strobus pine, white pine |
French: pin à aiguilles fines, pin Weymouth, pin blanc, pin blanc d'Amérique, pin blanc de l'Est, pin de Lord Weymouth |
Japanese: sutoroobu matsu, sutoroobusu matsu |
Spanish: pimobete blanco, pino blanco Americano, pino de Quebec, pino de Weymouth |
Habit: tree
Description: "Trees to 67 m; trunk to 1.8m in diameter, straight; crown conic, becoming rounded to flattened. Bark gray-brown, deeply furrowed, with long, irregularly rectangular, scaly plates. Branches whorled, spreading-upswept; twigs slender, pale red-brown, glabrous or pale puberulent, aging gray, ± smooth. Buds ovoid-cylindric, light red-brown, 0.4-0.5 cm, slightly resinous. Leaves 5 per fascicle, spreading to ascending, persisting 2-3 years, 6-10 cm x 0.7-1 mm, straight, slightly twisted, pliant, deep green to blue-green, pale stomatal lines evident only on adaxial surfaces, margins finely serrulate, apex abruptly acute to short-acuminate; sheath 1-1.5 cm, shed early. Pollen cones ellipsoid, 10-15 mm, yellow. Seed cones maturing in 2 years, shedding seeds and falling soon thereafter, clustered, pendent, symmetric, cylindric to lance-cylindric or ellipsoid-cylindric before opening, ellipsoid-cylindric to cylindric or lance-cylindric when open, (7-) 8-20 cm, gray-brown to pale brown, with purple or gray tints, stalks 2-3 cm; apophyses slightly raised, resinous at tip; umbo terminal, low. Seeds compressed, broadly obliquely obovoid; body 5-6 mm, red-brown mottled with black; wing 1.8-2.5 cm, pale brown" (Flora of North America online).
Habitat/ecology: In North America (native), "mesic to dry sites; 0-1500 m" (Flora of North America online). In New Zealand, "naturalised in scrub and modified forest, an occasional escape from cultivation. Strobus pine is mostly cultivated in state forests, especially in the Rotorua area" (Webb et al., 1988; p. 58).
Propagation: Seed
Native range: Central and eastern United States and Canada; cultivated elsewhere (GRIN).
Presence:
Pacific | |||
Country/Terr./St. & Island group |
Location |
Cited status &
Cited as invasive & Cited as cultivated & Cited as aboriginal introduction? |
Reference &
Comments |
Papua New Guinea
Papua New Guinea (eastern New Guinea Island) |
Papua New Guinea (eastern New Guinea Island) |
introduced
cultivated |
Conn, Barry J./Damas, Kipiro Q. (2013)
Planted in Morobe Province but not successful as a Plantation species. |
Pacific Rim | |||
Country/Terr./St. & Island group |
Location |
Cited status &
Cited as invasive & Cited as cultivated & Cited as aboriginal introduction? |
Reference &
Comments |
China
China |
China (People's Republic of) |
introduced
cultivated |
Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013)
Beijing Shi, Jiangsu (Nanjing Shi), Jiangxi (Lu Shan), Liaoning |
New Zealand
New Zealand |
New Zealand (country) |
introduced
invasive cultivated |
Webb, C. J./Sykes, W. R./Garnock-Jones, P. J. (1988) (p. 58) |
Also reported from | |||
Country/Terr./St. & Island group |
Location |
Cited status &
Cited as invasive & Cited as cultivated & Cited as aboriginal introduction? |
Reference &
Comments |
Canada
Canada |
Canada |
native
|
U.S. Dept. Agr., Agr. Res. Serv. (2013) |
United States (continental except west coast)
United States (other states) |
United States (other states) |
native
|
U.S. Dept. Agr., Agr. Res. Serv. (2013) |
Control: If you know of control methods for Pinus strobus, please let us know.