The very thin soils here support populations of one nationally rare species, Cheddar bedstraw (Galium fleurotii) and four nationally scarce species, pale St John's wort (Hypericum montanum), sea storksbill (Erodium maritimum), dwarf mouse-ear (Cerastium pumilum) and spring cinquefoil (Potentilla tabernaemontani).
Hypericum extract, by inducing both the CYP3A4 and the P-glycoprotein (P-gp), can reduce the plasma concentrations of different antineoplastic agents such as imatinib, irinotecan and docetaxel, thus reducing the clinical efficacy of these drugs.
They live in the Hagenia and Hypericum scrub in the timberline forest between 3000 and 4000 m.
It grows alongside other rare scrub plants such as Small's jointweed (Polygonella myriophylla), Florida lady's nightcap (Bonamia grandiflora), scrub blazing star (Liatris ohlingerae), and Highlands Scrub St. John's wort (Hypericum cumulicola).
Examples of plants producing Type I Photosensitivity include Buckwheat and St John's wort (Hypericum perforatum).
The main habitat type for this species is clear, sandy lakes with shoreline stands of maidencane (Panicum hemitomon) and sometimes sedges and St. John's worts.