English: Whorled Caraway (Carum verticillatum) This species is found in damp acid meadows or grassland; one of the whorls of leaves that give the species its common name can be seen near the bottom of this image.

Whorled Caraway is the most common umbellifer (member of the Carrot family) on this part of the moor, where it occurs in some extensive patches. It is very much a species of western Britain, as can be seen from its distribution map ( http://data.nbn.org.uk/gridMap/gridMap.jsp?allDs=1&srchSpKey=NHMSYS0000456960 ); "Umbellifers of the British Isles" (BSBI Handbook No.2; T.G.Tutin; 1980) also discusses this.

The species is rare or at least very local outside of this western (oceanic) zone. Plants with such a distribution tend to be those that require high moisture or humidity, while species with a northern or southern distribution tend to be more influenced by temperature.