| Calypso bulbosa (L.) Oakes | |
| Publ. & Syn. | Oakes in Z. Thomps., Nat. Hist. Vermont 1: 200 (1842). - Cypripedium bulbosum L., Sp. Pl.: 951 (1753). Described from Sweden, Russia, and Siberia. Lectotype (LINN): Herb. Linn. 1061.4 (Baumann et al. 1989: 441). |
| Notes | Sheviak and Catling (2002b) accepted three races of Calypso bulbosa: the Eurasian var. bulbosa, the trans-American var. americana, and the narrowly western North American var. occidentalis (Holz.) B. Boivin. Only var. americana reaches the Arctic. |
| Chromosomes | 20 (2x). - Canada. - At least five reports. |
| Geography | Disjunct circumboreal. |
| Parent taxon | Calypso Salisb. |
| Child taxa |
Calypso bulbosa var. americana (R. Br.) Luer |
| PAF ID | 270201 |