Range & Status
Native; an European Southern-temperate species. In Britain this dwarf annual occurs on the Channel Islands, in Cornwall and Anglesey.
It has been recorded from a total of 32 1km squares on The Lizard, four in West Penwith and and one near Nare Head (SW93) in East Cornwall. Now known from eight 1 km squares on The Lizard (SW61, SW71 and SW72) and the East Cornwall site. It has been recorded on the Isles of Scilly.
Habitat & Ecology
A plant of short turf and bare places over very shallow soils around low serpentine outcrops, especially where water seeps down into the earth from the rocks. It can also occur in winter-wet serpentine erosion pans with Chives Allium schoenoprasum . Conditions that favour Pigmy Rush Juncus pygmaeus do not favour J. capitatus . A drought in the previous year, followed by a warm wet spring favours it best. It flowers early in May and will often have set seed and disappeared by the time J. pygmaeus is coming in to flower.
Threatened by a lack of grazing.
Much of The Lizard is SSSI and managed by the National Trust and Natural England.