The Pacific dogwood tree ( Cornus nuttallii ) , also called California dogwood tree , Western cornel and heap dogwood is a metal money of cornel tree aboriginal to westerly North America often farm as an ornamental tree in coastal regions west of the Cascades .
This tree diagram was first account by Scots phytologist David Douglas during his expedition to the Pacific Northwest in the 1820s , where he mistook it for C. florida and did not send seeds back to England . However , it was English botanist Thomas Nuttall who was the first to trace the specie for scientific discipline while stay on at Fort Vancouver in the autumn of 1834 . The tree diagram ’s name used by Hul’q’umi’num’-speaking nations is Kwi’txulhp .
The Pacific Dogwood was dramatize as the official flowered emblem of British Columbia in 1956 , and a law was passed that prohibited any part of the Sir Herbert Beerbohm Tree from being dig out up or cut down . However , this law was repeal in 2002 . The mintage name nuttallii was given in laurels of Thomas Nuttall ( 1798 - 1859 ) , a British - put up phytologist and ornithologist .
This tree grows to a meridian of 20 - 30 feet , but can pass on up to 90 foundation under optimal conditions . It has a moderate maturation rate , adding about 1 foundation per yr until it extend to adulthood . The tree can be to be 150 years old , but its lifetime is usually little due to susceptibleness to dogwood anthracnose , a disease because of the fungus Discula destructiva .
The leave of absence of the Pacific Dogwood are opposite , clustered at the end of branches and simpleton . The leaf are elliptic - ovate to obovate . They are sub - form at the base and unremarkably have a brusk point at the apex . Each leaf has pair of vein , and the petiole is relatively retentive . In the twilight , the leaves of the Pacific Dogwood take on shades of purple and red . The young barque is tenuous and smooth , but as the tree long time , it develop ridges that give the luggage compartment a “ scale - like ” coming into court . This barque is a rich brown color .
The tree diagram has livid bract that besiege the small , invisible peak , create the appearance of larger bloom . The heyday themselves are one by one small and inconspicuous , produced in a dense , rounded , green - bloodless prime head . The large blanched ‘ petals ’ are actually , make the show of a larger prime head . It efflorescence in April or May , before its leaves are out .
The fruit of the Pacific Dogwood is a modest , bright red drupe that contain several seeds . The fruit is not eat by humans , only razz and wildlife feed on the yield . The fruit is similar to that of the Eastern Flowering Dogwood ( Cornus florida ) , but it is more closely packed and produces more fruits per cluster . The fruit is describe as a drupe , which is a fleshy fruit with one hard - shelled seed , with the fruit not dissever open when ripe . However , sometimes a fruit may bear two seeds , making it a berry .
The Pacific Dogwood opt moist , well - enfeeble land that are high in organic thing . It can mature in a variety of grime type , from clay to sandy loam , and prefers acidic soils with a pH between 5.5 and 6 . It is present in all stages of both main and secondary ecological succession , from new colonisation to culminate communities . The tree diagram ’s use varies depending on sunlight photo . In full sun , it has a unretentive trunk with a crownwork as wide as it is marvellous . Under a canopy , it develops a tapered trunk with a myopic , slim crown .
culture of Pacific Dogwood
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