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Hieracium radyrense
Hieracium radyrense, the Radyr hawkweed, is a very rare endemic species restricted to Radyr in south Wales, UK. First identified in 1907 it was described as a variety in 1948 and a species in 1955. and belongs to Hieracium section Vulgata. It has rarely been seen and surveys between 1998 and 2004 indicate that only one population of about 25 plants survives.
A polycarpic perennial, Radyr hawkweed flowers from late May to early June or July. Specimens found at Danybryn in Radyr grew on a grassy bank and lawn under the partial shade of trees and shrubs.
Rusby's Hawkweed · White hawkweed · Alpine hawkweed · Sticky Hawkweed · Silver Hawkweed · Southern hawkweed · Attenborough's Hawkweed · Baker's Hawkweed · Hieracium bifidum · Bolander's hawkweed · Hieracium caesiomurorum · Hieracium caesium
Text excerpted from the Wikipedia article Hieracium radyrense by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
