Scientific name - Pinus Coulter D. Don
With pine cone largest in the world, weighing 2-3 kg.
Popular names - Coulter pine, bigcone, pitch pine, pino real.
Distribution and Habitat - originating in California and Mexico, 800-2100 m altitude, grows on rock slopes. Grow spontaneously on Mount Diablo.
Description - monoecious tree, 15-25 m high, trunk 40-120 cm diameter, wide crown, pyramid, iregulata. Bark gray-brown, streaked andanc with solxi long iregulati. Branches ascending, stalk yearly thin, brown-purple, glauca, rugosa, become black after several years. Ovoizi buds, dark red-brown, 1.5-3 cm, resinous, scales with fringed edges, white, top cuspidata. Leaves many in a 3 beam, twisted, gray-green, pale line of stoma,subulat steep peak. Male cones are ovoid-cylindrical, 25 mm, purple-brown, orange-brown in old age. Female cones are matureaza in two years, based on symmetric, ovoid before opening, ovoid-cylindrical when it opened, 20-40 x 15 cm, yellow-brown, resin, peduncle up to 3 cm, apophyses rhombic, strong and harsh , elongated, curved. Green cones weigh 2.5-3.6 kg. Seeds ovoid, 15-22 mm, dark brown, wings up to 2.5 cm. 2n = 24
Growth rate - fast.
Tolerances - drought, fire, minimum temperatures (-5 ˚ C) - (-10 ˚ C) and maximum of 39 ˚ C.
Requirements - pH 5.0-8.0; soil moist, sandy or clay. Annual rainfall 250-450 mm.
Propagation - by seed under cold greenhouse, immediately after maturation. It stratify for 6 weeks to encourage germination. The final place when they transplanteaza to 30-90 cm.
Diseases and pests - Elytroderma deformans, Sirococcus strobilinus.
Natural partners and Garden - Abies concolor, Abies bracts, Aquilegia exim, Arctostaphylos glauca, Calocedrus decurrens, Pinus Attenuat, Jeffrey Pinus, Quercus chrysolepis,anicatalog.com/en/taxon175145/Quercus_durata "target =" _blank "> length Quercus, Rhamnus tomentella.
Properties and Uses - Leaf secretions inhibit the growth of plants in this species. Regenerate quickly after fires.
Combat soil erosion.
Earl B. Alexander, Robert G. Coleman, Todd Keeler Wolf - Serpentine Geoecology of Western North America: Geology, Soils and Vegetation - Oxford University Press, 2006
Forestry Compendium - Pines of Forestry Importance - CABI, 2002
LeRoy Abrams - Illustrated Flora of the Pacific States - Stanford University Press, 1923
Michael G. Barbour, William Dwight Billings - North American Terrestrial Vegetation - Cambridge University Press, 1999
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