Descriptor : Repartition of intervallar cells pores

Descriptor type : categorical

Intervallar cell: Part of intervallum bounded by adjacent radial-longitudinal partitions and tangential synapticulae.

Intervallum: Space enclosed between the walls.

Synapticula (plur. synapticulae): Narrow horizontal rod linking two adjacent vertical intervallar structures.

Same numbers of rows of pores per facet

Facet: Any face of a calicle or syrinx.

Different numbers of rows per facet

Facet: Any face of a calicle or syrinx.

isn't included in the term

Hierarchy

Intervallar cells
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 |_ Repartition of intervallar cells pores