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Biology - Structure: Leaves

Leaf Bases

Be aware that variation exists among cultivars and individual plants within the same species.

		cuneate wedge-shaped, narrowly triangular Nyssa sylvatica			oblique slanting with unequal sides, lopsided Celtis occidentalis
		acute sharp, tapering with straight sides at a 90 degree angle Euonymus alata		truncate straight across at the end Liriodendron tulipifera
		rounded rounded like an arc of a circle Zelkova serrata		cordate heart shaped, having two rounded lobes forming a deep sinus Cercis canadensis