Search results
Results from the WOW.Com Content Network
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 ...
A mature female big-cone pine (Pinus coulteri) cone, the heaviest pine cone A young female cone on a Norway spruce (Picea abies) Immature male cones of Swiss pine (Pinus cembra) A conifer cone, or in formal botanical usage a strobilus, pl.: strobili, is a seed-bearing organ on gymnosperm plants, especially in conifers and cycads.
The female cone then opens, releasing the seeds which grow to a young seedling. To fertilize the ovum, the male cone releases pollen that is carried in the wind to the female cone. This is pollination. (Male and female cones usually occur on the same plant.) The pollen fertilizes the female gamete (located in the female cone).
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 ...
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 ...
Cones are 5–9 cm (2– 3 + 1 ⁄ 2 in) long, with thin, fragile scales; they are dark blue-purple before maturation, turning brown when ripe about 16–18 months after pollination. The 6–7 mm ( 1 ⁄ 4 – 9 ⁄ 32 in) long seeds have a 2–2.5 cm ( 3 ⁄ 4 –1 in) wing and are wind- dispersed .
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.
Mature open cones and seeds Roots of an old pine in Ystad, Sweden. The seed cones are red at pollination, then pale brown, globose and 4–8 mm (5 ⁄ 32 – 5 ⁄ 16 in) in diameter in their first year, expanding to full size in their second year, pointed ovoid-conic, green, then gray-green to yellow-brown at maturity, 3–7.5 cm (1 + 1 ⁄ 8 –3