Pinus ponderosa

Pinus ponderosa, commonly known as the ponderosa pine, bull pine, blackjack pine, western yellow-pine, or filipinus pine is a very large pine tree species of variable habitat native to mountainous regions of western North America. It is the most widely distributed pine species in North America. Pinus ponderosa grows in various erect forms from British Columbia southward and eastward through 16 western U.S. states and has been introduced in temperate regions of Europe, and in New Zealand. It was first documented in modern science in 1826 in eastern Washington near present-day Spokane (of which it is the official city tree). On that occasion, David Douglas misidentified it as Pinus resinosa (red pine). In 1829, Douglas concluded that he had a new pine among his specimens and coined the name Pinus ponderosa for its heavy wood. In 1836, it was formally named and described by Charles Lawson, a Scottish nurseryman. It was adopted as the official state tree of Montana in 1949. Pinus ponderosa is a large coniferous pine (evergreen) tree. The bark helps to distinguish it from other species. Mature to over-mature individuals have yellow to orange-red bark in broad to very broad plates with black crevices. Younger trees have blackish-brown bark, referred to as "blackjacks" by early loggers. Ponderosa pine's five subspecies, as classified by some botanists, can be identified by their characteristically bright-green needles (contrasting with blue-green needles that distinguish Jeffrey pine). The Pacific subspecies has the longest——and most flexible needles in plume-like fascicles of three. The Columbia ponderosa pine has long——and relatively flexible needles in fascicles of three. The Rocky Mountains subspecies has shorter——and stout needles growing in scopulate (bushy, tuft-like) fascicles of two or three. The southwestern subspecies has , stout needles in fascicles of three (averaging ). The central High Plains subspecies is characterized by the fewest needles (1.

About this result

This page is automatically generated and may contain information that is not correct, complete, up-to-date, or relevant to your search query. The same applies to every other page on this website. Please make sure to verify the information with EPFL's official sources.

Related concepts (22)

Related lectures (4)

Scots Pine: Botanical Features and Utilisations

Explores the botanical features, distribution, wood properties, and utilizations of Scots Pine, along with innovative self-shaping wood concepts.

Quantum Measurement: General Description

Explores the general description of quantum measurements, including post-measurement states and Kraus operators.

Insights in Biomass Burning Atmospheric Pollution

Explores the impact of Biomass Burning emissions on atmospheric pollution, focusing on the challenges in assessing and quantifying Particulate Matter and Volatile Organic Compounds.

Washington (ˈwɑːʃɪŋtən), officially the State of Washington, is a state in the Pacific Northwest region of the Western United States. Named for George Washington—the first U.S. president—the state was formed from the western part of the Washington Territory, which was ceded by the British Empire in 1846, by the Oregon Treaty in the settlement of the Oregon boundary dispute. The state is bordered on the west by the Pacific Ocean, Oregon to the south, Idaho to the east, and the Canadian province of British Columbia to the north.

Oregon (ˈɒrɪɡən) is a state in the Pacific Northwest region of the United States. Oregon is a part of the Western United States, with the Columbia River delineating much of Oregon's northern boundary with Washington, while the Snake River delineates much of its eastern boundary with Idaho. The 42° north parallel delineates the southern boundary with California and Nevada. The western boundary is formed by the Pacific Ocean. Oregon has been home to many indigenous nations for thousands of years.