Jon Agar Profile picture
Professor of STS, UCL. Historian of science and technology

Jun 4, 2023, 7 tweets

White and Common (yellow) Rockrose (Helianthemum apenninum and nummularium), Purn Hill, Somerset, and, drum roll…

… the hybrid Sulphur Rockrose (Helianthemum × sulphureum), Purn Hill, Somerset #wildflowerhour

Also seen on Brean Down, Somerset, compare with White Rockrose below

Also saw found the weird small grey umbellifera Honewort (Trinia glauca), Purn Hill, Somerset #wildflowerhour

Purn Hill is a wonderful botanical site (as is the much larger Brean Down), a mix of maritime and limestone influences, with views to Wales and Devon

Not strictly one for #wildflowerhour but the rare branched horsetail Equisetum ramosissimum was a new one for me. Masses of it by the verge of Ellenborough Park in Weston-super-Mare

Cheddar Pink, in its classic location, Cheddar Gorge, top of the cliffs #wildflowerhour

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