Decades Kewenses. Plantarum Novarum in Herbario Horti Regii Conservatarum. Decas IV (1893) Decades Kewenses. Plantarum Novarum in Herbario Horti Regii Conservatarum. Decas IV. Bulletin of Miscellaneous Information (Royal Gardens, Kew) 1893(73): 11. doi: 10.2307/4118283.
There is no corrections for Stachys obtusifolia yet.