Species List

Coniferous wood | Dicotyledon wood | A-Z by Latin Name | A-Z by Familiy Name

Prunus spinosa L.

Stone Fruit: Blackthorn



Transversal section

  Semi-ring-porous to diffuse-porous. Pores solitary and in radial pore multiples and pore clusters. Diffuse- to semi-ring-porous wood. Growth ring boundaries distinct, marked by abrupt transition in pore size from latewood to earlywood, occasionally indistinct, depending on growth conditions. Fibres in ground tissue almost exclusively thickwalled. Gum deposits in heartwood vessels. Diffuse apotracheal parenchyma.

Radial section

  Simple perforation plates. Spiral thickenings, typically widely spaced. Uniseriate rays generally square to upright cells, multiseriate rays heterogeneous, often square and upright ray cells. Occasionally rhombic crystals and crystal druses in rays. Distinct spiral thickenings in vessels and fibre-tracheids. Libriform fibres absent.

Tangential section

  Uniseriate and 4- to 6-seriate rays, frequently larger than 6 cells wide. Oval, multiseriate ray cells. Occasionally sheath cells. Average ray height: 30 to 70 cells, often higher than 4mm.

Key characters

  Semi-ring- to diffuse-porous. Uniseriate and multiseriate (4- to >6-seriate), heterogeneous rays. Simple perforation plates. Spiral thickenings.

  © / authors / citation / 03.05.06