| | Cypripedium parviflorum Salisb. |
| Publ. & Syn. | Salisb., Trans. Linn. Soc. London 1: 77 (1791). Lectotype: U.S.A.: Virginia. Salisbury, Trans. Linn. Soc. London 1: t. 2, f. 2. 1791. (Cribb 1997: 171). - Cypripedium calceolus var. parviflorum (Salisb.) Fernald, Rhodora 48: 4 (1946). - Cypripedium calceolus subsp. parviflorum (Salisb.) Hultén, Ark. Bot., n. s., 7, 1: 34 (1968). |
| Notes | Several authors have considered Cypripedium parviflorum and C. calceolus as, respectivelly, American and Eurasian races of one species. Cypripedium calceolus L., Sp. Pl.: 951 (1753), approaches the Arctic in Norway and in the Murman area in northwestern European Russia. Sheviak (2002a) accepted C. parviflorum and recognized three races: var. makasin, var. parviflorum, and var. pubescens (Willd.) O.W. Knight [C. pubescens Willd.]. According to his maps, both vars. parviflorum and makasin should reach the Arctic in Alaska and on the Hudson Bay but the maps do not correspond with the text. The variety reported in the text to reach northern Alaska and the Yukon Territory is var. makasin, whereas both varieties are reported in the text from Ontario and may reach the Arctic on Hudson Bay. |
| Chromosomes | 20 (2x). - Canada, U.S.A.? - Several reports. |
| Geography | North American. |
| Parent taxon | Cypripedium L. |
| PAF ID | 270102 |