Alder tree leaf identification. Do they occur in pairs. Leaves alternate compound and leaflets usually are toothed or lobed. Each tree has its own growth habit. Over 30 species of clump forming herbaceous perennials most and deciduous sometimes suckering shrubs or subshrubs tree peonies.
List of tree species in new york washington dc or the northeast available on leafsnap. Landscape plants mostly woody ie shrubs and trees in this volume are listed in alphabetical order by genus from a abelia through e exochordafrom the list below select a letter which corresponds to the first letter of the genus you wish to view or if listed the genus itself or search the common name list. The male flowers or catkins are a dark yellow brown colour about 2 inches long when open. When it comes to the most common north american trees the red alder is number onealso known as alnus rubra its latin name this deciduous tree can be identified by oval shaped leaves with serrated edges and a defined tip as well as rust red bark.
Look at a shoot not too near the tip. For more localized information your local. The entire provincestate is coloured regardless of where in that provincestate it occurs. Leaf identification charts and information.
This is volume 1 of oregon state universitys landscape plants web site. Habitus the growth habit of the tree crown habit is an important characteristic in tree identification especially from a distance. Range map for european black alder alnus glutinosa. Red alder is the largest native alder species in north america with a range confined to the western united states and canada.
Leafsnap is an electronic field guide for tree and plant species in new york city and washington dc. It produces both male and female flowers on the same tree. Leaf arrangement or phyllotaxis is another feature of leaves that may help in you in identifying a tree is how they are arranged on the shoots or twigs of the tree. Once you have narrowed down the possible identification of your leaf you can use the tree fact articles here on the 20 20 site to check out actual photos of the leaves and information on many of the most popular trees.
If pairs of buds are set at right angles to each other then this arrangement is described as decussate as seen in the.