Hieracium attenboroughianum (Asteraceae), a new species of hawkweed

Abstract

Hieracium attenboroughianum is described from the Brecon Beacons, Wales. It is a member of the H. britannicum group in Hieracium section Stelligera Zahn, related to H. britannicoides P. D. Sell but differing in cupped, dark green leaves and sparse, medium simple eglandular hairs and many glandular hairs on the involucral bracts. About 300 plants occur on Old Red Sandstone mountain ledges on Cribyn (V.c. 42). It is named after David Attenborough. It is classified under the IUCN Threat Category 'Endangered'.

Conservation of Britain’s biodiversity: Distribution and status of the British endemic Hieracium subbritannicum, Limestone Hawkweed (Asteraceae)

“…Sell occurs in the Wye Valley and differs in having dense stellate hairs on the involucral bracts (Sawtschuk & Rich, 2008), and H. attenboroughianum T.C.G. Rich occurs in the central Brecon Beacons and differs in having remotely denticulate, ovate leaves and sparse simple eglandular hairs on the involucral bracts (Rich, 2014).…”