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( Pin oak)
The Pin oak or Swamp Spanish oak (Quercus palustris) is an oak in the red oak section Quercus sect. Lobatae. It is native to eastern North America, mainly in the eastern United States from Connecticut west to eastern Kansas, and south to Georgia across to eastern Oklahoma; it is also native in the extreme south of Ontario, Canada. The Pin Oak is also well adapted to life in Australia (where it has been introduced) and is quite widespread across the Australian continent especially in the cooler southern States such as Victoria and New South Wales. It is a medium-sized deciduous tree growing to 25-30 m tall, with a trunk up to 1 m diameter. The crown is broad conic when young, with numerous small branches radiating out from a central leader. When older, some upper branches become quite large and the central leader is lost, while the lower branches gradually droop downwards. The leaves are 5-16 cm long and 5-12 cm broad, lobed, with five or seven lobes, and deep sinuses between the lobes. Each lobe has 5-7 bristle-tipped teeth. The leaf is mostly hairless, except for a very characteristic tuft of pale orange-brown down on the lower surface where each lobe vein joins the central vein. The acorns, borne in a shallow cup, are hemispherical, 10-16 mm long and 9-15 mm broad, green maturing pale brown about 18 months after pollination; the kernel is very bitter.
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