Microscopic characteristics of dicotyledonous wood

Rays in tangential section
	Section r radial t tangential q transversal	Diagnostic Value h high me medium mo modest

Homogeneous rays: All cells are round or oval in form.	t	h
Heterogeneous rays: The margin cells are of another form than the internal, prostrate cells.	t	h
Uniseriate rays: Are only one cell wide. picture 1: homogeneous picture 2: heterogeneous	t	h
Biseriate to triseriate rays: Most of the rays are 2-3 cells wide, however rare uniseriate and 4-seriate rays are present. picture 1,2: homogeneous picture 3: heterogeneous	t	h
Triseriate to 5-seriate rays: Most of the rays are 3-5 cells wide, however rare uniseriate and biseriate rays are present. picture 1: homogeneous picture 2,3: heterogeneous
Storied rays: Rays are distributed in series at regular intervals.	t	me
Uniseriate and multiseriate rays: In addition to numerous uniseriate rays, large rays which are visible to the naked eye are also present.	t	h
Aggregate rays: Group of narrow rays which to the naked eye appears as a multiseriate ray.	t/q	h
Sheath cells: A series of upright cells bordering multiseriate rays: In tangential section forming a sheath around the inner, prostrate cells.	t	me
Ray cells enlarged at the growth ring boundary.	q	h

/ authors / citation / 12.05.04

Rays in tangential section