Leaves
The leaves are unique among seed plants, being fan-shaped with veins radiating out into the leaf blade, sometimes bifurcating (splitting), but never anastomosing to form a network. Two veins enter the leaf blade at the base and fork repeatedly in two; this is known as dichotomous venation. The leaves are usually 5–10 cm (2-4 in), but sometimes up to 15 cm (6 in) long. The old popular name "maidenhair tree" is because the leaves resemble some of the pinnae of the maidenhair fern, Adiantum capillus-veneris.
Leaves of long shoots are usually notched or lobed, but only from the outer surface, between the veins. They are borne both on the more rapidly growing branch tips, where they are alternate and spaced out, and also on the short, stubby spur shoots, where they are clustered at the tips.
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Famous quotes containing the word leaves:
“We love to hear some men speak, though we hear not what they say; the very air they breathe is rich and perfumed, and the sound of their voices falls on the ear like the rustling of leaves or the crackling of the fire. They stand many deep.”
—Henry David Thoreau (1817–1862)
“The winds awaken, the leaves whirl round,
Our cheeks are pale, our hair is unbound,
Our breasts are heaving, our eyes are agleam,
Our arms are waving, our lips are apart....”
—William Butler Yeats (1865–1939)
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—Peggy Noonan (b. 1950)