Species List

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

Frangula alnus Mill.

Alder Buckthorn



Transversal section

  Semi-ring- to diffuse-porous. Pores rather widely spaced, solitary or in short radial multiples and small clusters. Growth ring boundaries rather distinct, marked above all by abrupt transition in pore size. Sparse apotracheal parenchchyma.

Radial section

  Simple perforation plates. Fine spiral thickenings. Heterogeneous rays, marginal cells generally in one row of square and upright cells. Apertures of the ray-vessel pits slightly enlarged. Libriform fibres present, fibre-tracheids absent.

Tangential section

  Rays generally bi- and triseriate. Axially oval ray cells. Average ray height: 10 to 20 (to 30) cells.

Key characters

  Semi-ring-porous. Simple perforation plates. Spiral thickenings. Rays slightly heterogeneous.

  © / authors / citation / 03.05.06