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It is commonly known as the pyramid tree, Norfolk Island hibiscus, Queensland white oak, sally wood, [2] or simply as white oak on Norfolk Island. [3] Its seed capsules are filled with irritating hairs giving rise to common names, itchy bomb tree , [ 4 ] and cow itch tree .
The leaves are obovate to oblong, glabrous above, glabrous to densely grey-white hairy below, mostly 10–20 centimetres (4–8 inches) long and 5–14 cm (2– 5 + 1 ⁄ 2 in) wide (rarely up to 30 cm (12 in) long and 16 cm (6 in) wide), with 9 to 15 lobes on each side, and a 10–13 mm (3 ⁄ 8 – 1 ⁄ 2 in) petiole. The flowers monecious ...
It is commonly known as the Garry oak, Oregon white oak or Oregon oak. It grows from sea level to an altitude of 690 feet (210 metres) in the northern part of its range, and from 980 to 5,900 ft (300 to 1,800 m) in the south of the range in California. [4] The eponymous Nicholas Garry was deputy governor of the Hudson's Bay Company.
Quercus alba, the white oak, is one of the preeminent hardwoods of eastern and central North America. It is a long-lived oak, native to eastern and central North America and found from Minnesota, Ontario, Quebec, and southern Maine south as far as northern Florida and eastern Texas. [3]
Quercus mohriana, commonly known as the Mohr oak, shin oak or scrub oak, is a North American evergreen shrub or small tree in the white oak group and is native to the south-central United States and north-central Mexico. [2] [3] The species epithet mohriana honors the pharmacist and botanist Charles Mohr of Alabama. [4]
Quercus gambelii, with the common name Gambel oak, is a deciduous small tree or large shrub that is widespread in the foothills and lower mountains of western North America. It is also regionally called scrub oak , oak brush , and white oak .
Members of the section may be called white oaks. The section includes all white oaks from North America (treated by Trelease as subgenus Leucobalanus). [2] The staminate flowers have seven or more stamens. The acorns mature in one year. The seed leaves are either free or fused together. The cup at the base of the acorn has thickened triangular ...
Quercus myrsinifolia is an evergreen oak tree that grows up to 20 metres (66 ft) tall. Leaves are 60–110 × 18–40 mm with serrulate margins; the petiole is 10–25 mm long. The acorns are ovoid to ellipsoid, 14–25 × 10–15 mm, and glabrous with a rounded apex; the flat scar is approx. 6 mm in diameter.