Quercus douglasii - Wikipedia
网页Quercus douglasii, known as blue oak, is a species of oak endemic to California, common in the Coast Ranges and the foothills of the Sierra Nevada. [4] It is California's most drought-tolerant deciduous oak, [5] and is a dominant species in the blue oak woodland ecosystem. It is occasionally known as mountain oak and iron oak. [6] [7]
Blue Oak - US Forest Service
网页Blue Oak (Quercus douglasii Hook. & Arn.) By Forest Gauna. Blue oak is named for the bluish cast of the leaves; a stand of blue oak trees from a distance has a “cool,” relaxing blue-grey tinge, which is a welcome sight in the hot summer sun of the California foothills. Blue oak is endemic to California.
Quercus douglasii Hook - US Forest Service Research and …
网页Blue oak (Quercus douglasii), named for its blue-green foliage, is also known as iron oak, mountain white oak, or mountain oak. This species is currently underutilized and unmanaged. Silvicultural systems for it are unknown.
Quercus douglasii (Blue Oak) - Gardenia
网页Quercus douglasii (Blue Oak) is a medium-sized deciduous tree with a short trunk and a broad, rounded crown. The stout crooked branches are clothed with oval, shallowly lobed, bluish-green leaves, up to 4 in. long (10 cm). The foliage turns attractive pastel shades of pink, orange and yellow in the fall.
Quercus douglasii - US Forest Service
网页GENERAL DISTRIBUTION: Blue oak is native and endemic to California [98, 114, 116, 188, 196]. It is very common within its narrow range, dominating almost half of California's oak woodlands [196]. It occurs in valleys and on low slopes of the Coast Ranges and on low foothills of the Sierra Nevada.
藍橡樹 - 维基百科，自由的百科全书
网页藍橡樹（學名：Quercus douglasii，英語： Blue Oak ，又稱藍櫟、道格拉斯櫟）是櫟屬的一種植物，原産於加利福尼亞州， [2] 發現於加利福尼亞海岸山脈的中央山谷中。
Species Spotlight: Quercus douglasii Hook. & Arn.
网页2019年2月8日 · Quercus douglasii is an endemic California oak tree, affectionately called “the blue oak” due to its distinctive blueish-green leaf color. It is common throughout California and known for growing in locations that create a bathtub ring around California’s great Central Valley.
Quercus douglasii Hook. & Arn. - Calflora
网页Quercus douglasii is a tree that is native to California, and endemic (limited) to California. Toxicity: Do not eat the fruit or leaf of this plant. This plant is available commercially. Jepson eFlora.
Nature's Notebook: Blue Oak
网页Quercus douglasii is adapted to drought and dry climates, and has an extensive root system to access water. This oak species exhibits masting behavior; all the individuals in a population will have synchronized episodic productions of acorns.
Quercus douglasii, blue oak | Trees of Stanford & Environs
网页2020年3月20日 · Native in the immediate vicinity of campus, the deciduous blue oak grows along with coast live oak and valley oak. The leaves are noticeably bluegreen and are lobed shallowly, if at all. Off Santa Teresa Street, there is a parking lot in front of Roble Hall carved out of an original grove of blue oak.