| | Limnorchis dilatata (Pursh) Rydb. |
| Publ. & Syn. | Platanthera leucostachys Lindl., Gen. Sp. Orchid. Pl.: 288 (1835). Described with "Hab. in ora occidentali Americae septentrionalis". - Platanthera dilatata var. leucostachys (Lindl.) Luer, Native Orchids U.S. & Canada: 225 (1975). |
| Notes | Sheviak (2002b) recognized three North American races of Platanthera dilatata: var. dilatata, var. albiflora, and var. leucostachys. He mapped them as nearly sympatric throughout western North America, including southwestern Alaska. Variety dilatata has a separate range in eastern North America, and the plant that reaches the Arctic on Hudson Bay and in Labrador belongs to var. dilatata. The southwestern Alaskan plants, possibly Borderline Arctic, may belong to either of the three varieties. Sheviak presented an interesting hypothesis to explain the variation observed. Due to lack of revision of the Alaskan material, races are not entered. |
| Chromosomes | 42 (2x). - Canada, U.S.A. - Numerous reports, partly specified for var. albiflora, var. dilatata, and var. leucostachys. |
| Geography | North American: ALA? CAN. |
| Distribution |
N = F
AN = ?
E = R
HL = r
[ key ] |
| Parent taxon | Limnorchis Rydb. |
| PAF ID | 271001 |