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The arboretum contains what is claimed to be the best-documented collection of native and exotic pines in the world, in addition to many other native and exotic conifers.. 78 pine species, 24 fir species, and many other conifer species are growing on the arboretum's grounds.
Pollination occurs early the following spring, with the male cones 3–8 cm (1 + 1 ⁄ 4 – 3 + 1 ⁄ 4 in) long. The female (seed) cones mature in about 20 months from pollination; when mature, they are yellow-brown in color, 15–25 cm (6– 9 + 3 ⁄ 4 in) long, and 5–7 cm (2– 2 + 3 ⁄ 4 in) broad, opening to 12 cm ( 4 + 3 ⁄ 4 in ...
The breeding station was established in 1925 by James Eddy in response to the dwindling lumber supply in the county and across the country. At that time, approximately 80,000,000 acers of land had in the United States had been deforested from logging or from fire. Eddy aimed to selectively breed trees in order to produce better quality lumber ...
Pine Hill Ecological Reserve is a nature reserve of 403 acres (1.63 km 2) located due east of Folsom Lake in the Sierra Nevada foothills, in El Dorado County, California.The reserve was established in 1979, and is managed by the Bureau of Land Management.
P. e. var. densa (South Florida slash pine, Dade County pine) is found in the pine rocklands of southern Florida and the Florida Keys, including the Everglades. [10] [11] Leaves are nearly all in bundles of two, with longer needles. The cones are smaller, 5–12 cm (2.0–4.7 in), the wood is denser, and the tree has a thicker taproot. [9]
Coulter pine (Pinus coulteri), or big-cone pine, is a conifer in the genus Pinus of the family Pinaceae.Coulter pine is an evergreen conifer that lives up to 100 years. [2] It is a native of the coastal mountains of Southern California in the United States and northern Baja California in Mexico, occurring in mediterranean climates, where winter rains are infrequent and summers are dry with ...
The female cones are large and usually woody, 2–60 centimetres (1–24 inches) long, with numerous spirally arranged scales, and two winged seeds on each scale. The male cones are small, 0.5–6 cm (1 ⁄ 4 – 2 + 1 ⁄ 4 in) long, and fall soon after pollination; pollen dispersal is by wind. Seed dispersal is mostly by wind, but some ...
Pinus albicaulis leaves are in fascicles (bundles) of five, and the cone is dark purple when immature (Mount Rainier National Park). Whitebark pine is a member of the white pine group, the Pinus subgenus Strobus, and the section Strobus; like all members of this group, the leaves (needles) are in fascicles (bundles) of five [5] with a deciduous sheath.