Aesculus hippocastanum L.

	Aesculus hippocastanum L.	Horse Chestnut	Hippocastanaceae
	Transversal section
	Diffuse- to almost semi-ring-porous. Pores solitary or in radial multiples of 2 to 5 (rarely more) pores. Thin-walled fibres. Growth ring boundaries weakly marked by a few (two to 3) rows of radially flattened latewood cells. Diffuse apotracheal parenchyma.
	Radial section
	Simple perforation plates. Distinct fine spiral thickenings. Homogeneous rays. Enlarged ray-vessel pits, pits occasionally simple. Libriform fibres present, fibre-tracheids absent.
	Tangential section
	Rays uniseriate, average height 6 to 15 cells.
	Key characters
	Diffuse-porous, pores often in radial multiples. Spiral thickenings. Uniseriate rays.
	Remarks
	Confusion with Populus is possible, however ray-vessel pits are distinctly bigger in Populus and the spiral thickenings are absent. The species was introduced in the 16th century in western Europe.

© / authors / citation / 03.05.06

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