California plane tree
| California plane tree | ||||||||||||
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California plane tree ( Platanus racemosa ) |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Platanus racemosa | ||||||||||||
| Nutt. |
The California plane tree ( Platanus racemosa ) is a species of the plane tree . It is native from California to Mexico.
Preparations from it were medicinally in many different ways among the Native Americans.
description
Californian plane trees are quite massive trees up to 15, rarely 25 meters high, with a diameter of up to 2 meters, with occasionally straight and upright, but mostly irregularly lying or hanging trunks. The stipules are dentate with entire margins. The dark green, thick leaf blade measures 10 to 25 centimeters lengthways and across and is three to five-lobed, the lobes are usually longer than wide, the lobes at the base of the leaves are usually slightly smaller. The indentations are wide and strongly concave. The outermost lobe is one to two thirds as long as the blade. The leaf margin is completely to finely serrated, at the extreme end the leaf is pointed, occasionally rounded. Far off the axis, the surface is permanently tomentose, and near the axis, the surface is smooth.
The flowering time is spring, the fruiting time is late autumn. The female inflorescences are in heads with two to seven, rarely from individual flowers, fruit-bearing heads have a diameter of 20 to 25, rarely up to 30 millimeters. The fruits standing on the side are sessile. The rachis of the fruit stands is up to 25 centimeters long. The fruits are 7 to 10 millimeter long achenes , at their base there are hairs about two thirds the length of the achenes. The number of chromosomes is 2n = 42.
distribution
The California plane tree is widespread from California to Mexico at altitudes from sea level to 1500 meters. It is common and can be found along streams and in rocky, damp canyons .
Systematics
The species was first described by Thomas Nuttall in 1842 .
