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The compound leaves correspond to these modes of venation; they are either pinnately or palmately compound. These ribs and veins are the woody framework of the leaf, supporting the soft green pulp. "Physiologically, leaves are green expansions borne by the stern, outspread in the air and light, in which assimilation and the processes connected with it are carried on."
"Those leaves are 'pinnately compound' and 'palmately compound' according as their leaflets are arranged like a feather or like the palm of your hand. When you begin to notice the edges of leaves you see that there is about every degree of cutting between the margin that is quite smooth and the margin that is so deeply cut that it is almost a compound leaf.
It is a pretty twining evergreen, with the leaves placed on long slender petioles, and palmately divided into usually five leaflets. The sweet-scented flowers, particularly so in the evening, are of a purplish-brown or scarlet-purple, and produced in axillary racemes of from ten to a dozen in each.
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