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Immature male or pollen cones of Rocky Mountain ponderosa pine. (Pinus ponderosa var. scopulorum) A conifer cone or pinecone (strobilus, pl.: strobili in formal botanical usage) is a seed-bearing organ on gymnosperm plants. It is usually woody, ovoid to globular, including scales and bracts arranged around a central axis, especially in conifers ...
Conifers at the Tree of Life Web Project; 300 million-year-old conifer in Illinois – 4/2007; World list of conifer species from Conifer Database by A. Farjon in the Catalogue of Life (Archived 2017-06-19 at the Wayback Machine) Tree browser for conifer families and genera via the Catalogue of Life (Archived 2019-12-20 at the Wayback Machine)
The outstanding characteristic of this tree is the large, spiny cones which are 20–40 cm (7.9–15.7 in) long (occasionally as much as twenty inches (51 centimeters) length has been observed), [3] 23 centimeters (nine inches) in width, [4] and weigh 2–5 kg (4.4–11.0 lb) when fresh. Each segment, or "scale", of the cone is tipped with a ...
List of forest-inventory conifers in the United States. Giant sequoia. Silvics of North America (1991), [1] a forest inventory compiled and published by the United States Forest Service, includes many conifers. [a] It superseded Silvics of Forest Trees of the United States (1965), which was the first extensive American tree inventory.
Abies grandis is a large evergreen conifer growing to 40–70 metres (130–230 feet) tall, exceptionally 100 m (330 ft), with a trunk diameter of up to 2 m (6 + 1 ⁄ 2 ft). The dead tree tops sometimes fork into new growth. [4] The bark is 5 centimetres (2 inches) thick, reddish to gray (but purple within), furrowed, and divided into slender ...
Australes. Engelm. Pinus elliottii, commonly known as slash pine, [2][3] is a conifer tree native to the Southeastern United States. Slash pine is named after the "slashes" – swampy ground overgrown with trees and bushes – that constitute its habitat. Other common names include swamp pine, yellow slash pine, and southern Florida pine. [3]
Pinus lambertiana (commonly known as the sugar pine or sugar cone pine) is the tallest and most massive pine tree, and has the longest cones of any conifer. The species name lambertiana was given by the Scottish botanist David Douglas , who named the tree in honour of the English botanist, Aylmer Bourke Lambert .
The leaves are needle-like, mostly 2.5–5 centimetres (1–2 inches) long, occasionally up to 7 cm (3 in) long, slender (1 millimetre or in thick), borne singly on long shoots, and in dense clusters of 20–30 on short shoots; they vary from bright green to glaucous blue-green in colour. The female cones are barrel-shaped, 7–13 cm (–5 in ...