| Astragalus laxmannii Jacq. | |
| Publ. & Syn. | Jacq., Hort. Vindob. 3: 22, t. 34 (1776). Lectotype (BM): "Planta culta in Horto Vindobonensis e seminibus a Laxmann e Sibiria" [seeds received from Pallas] (Podlech 1993: 270). |
| Notes | Welsh (2007) recognized three races of Astragalus laxmannii: the Siberian var. laxmannii (= A. adsurgens Pall., Astragalogia: 40, t. 31. 1800) and two North American varieties. Variety tananaicus (Hultén) Barneby & S.L. Welsh (A. tananaicus Hultén, A. adsurgens subsp. viciifolius (Hultén) S.L. Welsh) is restricted to the southern Yukon Territory and central Alaska and does not reach the Arctic. Variety robustior reaches the Arctic on Hudson Bay. These races are major allopatric (var. laxmannii) and parapatric (var. robustior and var. tananaicus) taxa. Subspecific combinations are not available under the priority species name. However, we keep the option open that a treatment as several species may be the more appropriate one. |
| Chromosomes | (1) 16 (2x). - Siberia, Far East (N). - Numerous reports. (2) 32 (4x). - Far East (West Chukotka). - Zhukova and Petrovsky (1977); Zhukova (1983, together with the diploid). |
| Geography | Asian (N/C) & North American (W). |
| Parent taxon | Astragalus L. |
| Child taxa |
Astragalus laxmannii var. robustior (Hook.) Barneby & S.L. Welsh |
| PAF ID | 630524 |