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Thursday, August 13, 2015

Carya illinoinensis - Pecan

The pecan is an unusual tree in our area. Looking very much like a walnut, its easily misidentified as such. The pecans are large deciduous trees, 50+ tall and wide, with a large rounded crown, and several main scaffold branches. One on Laurel and this one in SLO.

Here is ours on Laurel.

Foliage is alternate, pinnately compound, 12-18" long with 9-15 elliptical to lanceolate, serrated leaflets, dark green. Leaflets have an unequal base.

Flowers are male catkins, yellowish green, pendulous, female back some distance, small.

Fruit is large, 1-1/2" long, oblong, brown, thin shelled, dry drupe, usually in clusters of three.

Bark is thin when young, becoming fissured with age. Brown, mostly.

Twigs stout, thick, pubescent in the spring, large leaf scars, pointed buds, terminal large, and pubescent. Superposed bud (one bud on top of another, usually a flower bud, with the vegetative bud being the smaller one).

Black walnuts. Look at the fruit if possible, and the lateral buds are rounded on the walnut, pointed on these.

Santa Cruz
302 Laurel Ave

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