Current name: Lactarius acris (Bolton) Gray, A natural arrangement of British plants 1: 625 (1821) [MB#438561]
Basionym:
Agaricus acris Bolton, An History of Fungusses, Growing about Halifax 2: 60, t. 60 (1788) [MB#177656]
Obligate synonyms: - Lactifluus acris (Bolton) Roussel, Flore du Calvados et terrains adjacents, composée suivant la méthode de Jussieu Ed. 2: 66 (1806) [MB#227700]
- Lactifluus acris (Bolton) Kuntze, Revisio generum plantarum 3 (3): 856 (1891) [MB#227739]
- Galorrheus acris (Bolton) P. Kumm., Der Führer in die Pilzkunde: 126 (1871) [MB#507850]
- Agaricus lactifluus var. acris (Bolton) Pers., Synopsis methodica fungorum: 437 (?) [MB#299281]
Taxonomic synonyms: Lactarius acer (Bolton) Gray (1821) [MB#491791]