Search results
Results from the WOW.Com Content Network
A mature female big-cone pine (Pinus coulteri) cone, the heaviest pine cone A young female or seed cone on a Norway spruce (Picea abies) Immature male or pollen 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 cones take from four months to three years to reach maturity, and vary in size from 2 to 600 millimetres (1 ⁄ 8 to 23 + 5 ⁄ 8 in) long. In Pinaceae, Araucariaceae, Sciadopityaceae and most Cupressaceae, the cones are woody, and when mature the scales usually spread open allowing the seeds to fall out and be dispersed by the wind.
The name Pinus coulteri comes from Latin for pine, and coulteri comes from its discoverer Thomas Coulter (1793–1843), an Irish botanist and physician. [9] Pinus coulteri was discovered by Dr. Coulter on the mountains of Santa Lucia, near the Mission of San Antonio, in latitude 36°, within sight of the sea and at an elevation of from 3000 to 4000 feet above its level.
A pine is any conifer tree or shrub in the genus Pinus (/ ˈ p aɪ n ə s /) [1] of the family Pinaceae. Pinus is the sole genus in the subfamily Pinoideae.. World Flora Online accepts 187 species names of pines as current, with additional synonyms, making it the largest family among the conifers. [2]
Subfamily Piceoideae : cones are annual, without a distinct umbo, the cone scale base is broad, concealing the seeds fully from abaxial view, seed is without resin vesicles, blackish, the seed wing holds the seed loosely in a cup, leaves have primary stomatal bands adaxial (above the xylem) or equally on both surfaces.
The distinguishing characteristic is the reproductive structure known as a cone produced by all Pinales. All of the extant conifers, such as Araucaria, cedar, celery-pine, cypress, fir, juniper, kauri, larch, pine, redwood, spruce, and yew, are included here.
Needles and cones. The green pine needles give the twisted branches a bottle-brush appearance. The needles of the tree surround the branch to an extent of about one foot near the tip of the limb. [13] The name bristlecone pine refers to the dark purple female cones that bear incurved prickles on their surface.
Sugar pine is notable for having the longest cones of any conifer, mostly 10–50 cm (4– 19 + 3 ⁄ 4 in) long, [2] [5] exceptionally to 60 cm (23 + 1 ⁄ 2 in) long [citation needed] (although the cones of the Coulter pine are more massive); their unripe weight of 1–2 kilograms (2.2–4.4 lb) makes them perilous projectiles when chewed off ...