Quercus palustris Münchh. is an species from the Fagaceae family. In English, this plant is known as “Spanish Swamp Oak” and in German as “Sumpfeiche”.
Q. palustris - Habitus
Like all oaks, Q. palustris is a tree, which can reach heights between 4 and 25 metres (or 13 and 82 feet). The leaves are lobed deeply. They are dark green and have a long, bald stalk, which is between 20 and 60 centimetres long. The leaves follow the alternate leaf-pattern. The bark is grey, thin and with vertical furrows.
The plant is monoicous, that means, it has male and female flowers. Male flowers are located in catkin inflorescences. Female flowers are also located in catkins. They have a red stylus. The ripe fruit is a nut (acorn), which is hold by a hairy cupule.
Q. palustris is native to the East of North America and can been found from Connecticut to Kansas (east → west) and Ontario to Georgia (North → South). This species prefers dry to fresh soils and grow for example in river valleys or floodplain. Despite it's name, Q. palustris is not a swamp plant. It can grow on places, which are flooded sometimes, but doesn't tolerate permanent wetness. In Europe, this plant is planted as tree in parks or lake sides sometimes. I found this individual at the shore of Lake Uemmingen in Bochum, Western Germany.