| Persicaria amphibia (L.) Gray | |
| Publ. & Syn. | Gray, Nat. Arr. Brit. Pl. 2: 268 (1821). - Polygonum amphibium L., Sp. Pl.: 361 (1753). Lectotype (LINN): Europe. Herb. Linn. 510.7, left hand specimen, leg. Gmelin (Ekman and Knutsson 1994: 23). |
| Notes | Tzvelev: The differences between subsp. amphibia and subsp. laevimarginata are small and their status as taxa should be reconsidered. Elven: We follow the characters and discussion of Stanford (1925) and Hultén (1944) and provisionally accept two subspecies but the variation should be studied further. |
| Chromosomes | (1) ca. 44-50. - Siberia (N), Far East (N). - Numerous reports. (2) 72. - Alaska, Canada (NW). - Johnson and Packer (1968); Löve and Löve (1975c). |
| Geography | Circumboreal. |
| Parent taxon | Persicaria (L.) Mill. |
| Child taxa |
Persicaria amphibia subsp. amphibia Persicaria amphibia subsp. laevimarginata (Hultén) Soják |
| PAF ID | 410301 |