Checklist of the British & Irish Basidiomycota

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Gymnosporangium clavariiforme (Jacq.) DC., Fl. franç. (Paris) 2: 217 (1805)

Tremella juniperina L., Sp. pl. 2: 1157 (1753)
Tremella clavariiformis Jacq., Collnea bot. 2: 174 (1788)
Gymnosporangium juniperinum (L.) Fr., Fl. crypt. erlang. (Nürnberg): 333 (1817)
Roestelia lacerata Mérat, Nouv. Fl. Environs Paris Edn 2 1: 113 (1821)
Gyraria juniperina (L.) Gray, Nat. Arr. Brit. Pl. (London) 1: 594 (1821)

Habitat: 0 & l on Crataegus monogyna and C. laevigata (= C. oxyacanthoides), lll on Juniperus communis.

Notes: Rarely reported but apparently widespread. The conspicuous stage III on Juniperus is more often recorded than stages 0 & I on Crataegus.

Distribution: E: !, S: !, W: !, NI: !, ROI: !

Vouchers: England: K(M) 57923; Scotland: K(M) 7477; ROI: K(M) 100667

Descriptions, Lists & Icons:
D:, in Wilson, M. & Henderson, D.M, British Rust Fungi: 384 pp. (1966), p. 116-117

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