The buckwheat Eriogonum corymbosum is widely distributed throughout the southwestern United States, forming a complex of eight varieties. Eriogonum corymbosum var. nilesii is a primarily yellow-flowered taxon reported only from Clark County, Nevada. A previous genetic study by our research group found that variety nilesii is genetically distinct from other E. corymbosum varieties, based on a limited number of populations. Here, we assess genetic variation in 14 newly sampled yellow-flowered populations from southern Nevada, southern Utah, and northern Arizona, and compare them to genetic variation in six populations of previously determined E. corymbosum varieties. Of the new populations, we identified four as variety nilesii, four as variety aureum, three as variety glutinosum, two as apparent hybrids involving varieties aureum and nilesii, and one as a more distantly related admixture. Our results extend the range and area of E. corymbosum var. nilesii considerably. However, this extended range is confined to the Mojave Desert region of southern Nevada, and the number of known populations remains limited.
Utah State University
see citing publication for methodology.
Ellis, M.W., Wolf, P.G., Bardot, S., Walton, J.A., Rowe, C.A., Kulpa, S., Mock, K.E. Further examination of the geographic range of Eriogonum corymbosum var. nilesii (Polygonaceae, Eriogoneae) (2015) Phytotaxa, 203 (3), pp. 279-286. Available at http://biotaxa.org/Phytotaxa/article/view/phytotaxa.203.3.7/12413
Genetics and Genomics
This work is licensed under a Creative Commons Attribution 4.0 License.
Ellis, M. W., Wolf, P. G., Bardot, S., Walton, J. A., Rowe, C. A., Kulpa, S., & Mock, K. E. (2014). Further Examination of the Geographic Range of Eriogonum corymbosum var. nilesii (Polygonaceae) [Data set]. Utah State University. https://doi.org/10.15142/T3Q30W
Additional FilesERI_AFLP_All_Combos.csv (97 kB)
full_eri_genalex.csv (99 kB)