학명: Quercus phellos L.
분류: 참나무과(Fagaceae)
학명 풀이:
Quercus: Oak genus
phellos: Cork; the ancient Greek name for European Oak
영명: Willow oak
사진: 2016.10.20 물향기수목원
아래: 2018.01.30 물향기수목원
아래 : 2022.10.18 물향기수목원
열매 퍼온 사진
사진 출처:
https://treekey.phillytreemap.org/media/Species/Quercus_phellos_fruit.jpg
설명 1
Quercus phellos L.
Quercus phellos (willow oak) is a North American species of a deciduous tree in the red oak group of oaks. It is native to the eastern and central United States from Long Island south to northern Florida, and west to southernmost Illinois, Missouri, Oklahoma, and eastern Texas. It is most commonly found growing on lowland floodplains, often along streams, but rarely also in uplands with poor drainage, up to 400 meters (1,300 ft) altitude.
Description
It is a medium-sized tree growing to 20-30 metres (65-100 ft) tall (exceptionally to 39 m, 128 ft), with a trunk up to 1-1.5 m (40-60 in) diameter (exceptionally 2 metres, 6.6 ft). It is distinguished from most other oaks by its leaves, which are shaped like willow leaves, 5-12 cm (2-4 3/4 in) long and 1?2.5 cm (3/8-1 in) broad with an entire (untoothed and unlobed) margin; they are bright green above, paler beneath, usually hairless but sometimes downy beneath. The fruit is an acorn, 8?12 mm (5/16-15/32 in) long, and almost as wide as long, with a shallow cup; it is one of the most prolific producers of acorns, an important food tree for squirrels, birds, and other animals in the forest. The tree starts acorn production around 15 years of age, earlier than many oak species.
Willow oaks can grow moderately fast (height growth up to 60 cm, 2 ft a year), and tend to be conic to oblong when young, rounding out and gaining girth at maturity (i.e. more than 50 years).
설명 출처: https://en.wikipedia.org/wiki/Quercus_phellos
설명 2
Leaf: Alternate, simple, 2 to 5 inches long, linear or lanceolate in shape (willow-like) with an entire margin and a bristle tip.
Flower: Species is monoecious; males borne on slender yellow-green catkins; females borne on very short axilliary spikes, both appear very early with the leaves.
Fruit: Acorns are very small, 1/4 to 1/2 inch across, nearly round and yellow-green, turning tan when older, caps are thin, saucer-like and cover only 1/4 of acorn with thin, tomentose, appressed scales.
Twig: Slender, hairless, olive-brown in color when young; multiple terminal buds are very small, reddish brown and sharp-pointed.
Bark: On young stems, smooth, gray and tight; later becoming darker and forming irregular rough ridges and furrows.
Form: A medium sized tree up to 80 feet tall that forms a dense oblong crown when open grown; lower branches do not readily self-prune.
설명 출처:
http://dendro.cnre.vt.edu/dendrology/syllabus/factsheet.cfm?ID=75