Hypericum maculatum subsp. obtusiusculum
This tetraploid subspecies occurs in similar habitats to those of subsp. maculatum, but tends to grow in more ruderal habitats such as rough grassland, scrub, quarries, roadsides, railway banks and waste ground. Generally lowland, but reaching 320 m (Cynwyd, Merioneth).
The map of this taxon in Perring & Sell (1968) was incomplete, being based only on records confirmed by N.K.B. Robson. It remains under-recorded in many areas. Overall, its distribution is probably stable. The relative frequency of the two subspecies in Scotland requires further study.
Suboceanic Temperate element. Subsp. obtusiusculum is confined mainly to lowlands of N.W. Europe.
PLANTATT - Attributes of British and Irish plants. (.zip 1455KB) This dataset was compiled and published in 2004, and last updated in November 2008. Download includes an Excel spreadsheet of the attributes, and a PDF explaining the background and nomenclature. Note that the PDF version is the booklet as published, whereas the Excel spreadsheet incorporates subsequent corrections. A hardcopy can be purchased from the Centre for Ecology and Hydrology.