| Dryas integrifolia Vahl | |
| Publ. & Syn. | Vahl, Skr. Naturhist.-Selsk. 4, 2: 171 (1798). Described from Greenland. |
| Notes | Elven and Murray: The circumscription and subdivision of Dryas integrifolia is disputed, see, e.g., Hultén and Fries (1986) who included D. incisa (and D. crenulata) in it. Yurtsev (1997) included three species in his subsect. Tenellae - D. crenulata, D. chamissonis, and D. integrifolia - as an evolutionary series. We tentatively accept D. crenulata but include D. chamissonis in D. integrifolia subsp. integrifolia. The two subspecies below were not accepted by Yurtsev but we consider them major geographical races. There is some support for them in the molecular study of Tremblay and Schoen (1999) where several Pleistocene refugia were indicated for D. integrifolia s. lat. |
| Chromosomes | 18 (2x). - Siberia (N, S), Far East (N). - At least three reports. A report from the Yukon Territory published for D. crenulata (Mulligan and Porsild 1970) may belong here. |
| Geography | Amphi-Beringian - North American (N). |
| Parent taxon | Dryas L. |
| Child taxa |
Dryas integrifolia subsp. integrifolia Dryas integrifolia subsp. sylvatica (Hultén) Hultén |
| PAF ID | 640806 |