The Northwest European pollen flora, 42 : Verbenaceae

Abstract

The Verbenaceae is a large family with up to 98 genera and about 2600 species. These are distributed worldwide, but with a concentration in tropical and subtropical regions. Only one genus occurs in Western Europe, Verbena officinalis. One term, already used in previous parts of the NEPF is of special interest here. Its definition is as follows: H-endoaperture: A composite endoaperture, consisting of a central part which connects two lateral, longitudinally elongated extensions (arms), thus forming an H.