Eriogonum coccineum and Eriogonum zionis (Polygonaceae) raised from varietal status, U.S.A.
DOI :
https://doi.org/10.17348/jbrit.v20.i3.1485Mots-clés :
Arizona, buckwheat, endemic plants, Eriogonum zionis var. coccineum, E. zionis var. zionis, plant classification, Polygonaceae, UtahRésumé
Eriogonum zionis var. coccineum J.T. Howell and E. zionis var. zionis (Polygonaceae) are elevated to species level as E. coccineum and E. zionis based on 1) no overlap in their substrate edaphism or geographic ranges, 2) differences in tepal color, size, and shape that make them easily discernible, and 3) just one specimen of E. racemosum that might be interpreted as a morphologic intermediate. Specimen review, digital records, and geospatial information allow us to easily discern that the centers of these entities’ ranges are separated by about 100 km and that their nearest occurrences are separated by 30 km. Eriogonum zionis var. coccineum occurs in northern Arizona while E. zionis var. zionis occurs in northern Arizona and southern Utah.
Références
Howell, J.T. 1940. New Western plants. Leafl. W. Bot. 2(14):253–254.
Howell, J.T. 1943. Plantae occidentales—III. Leafl. W. Bot. 3(9):205–208.
Kearney, T.H. & R.H. Peebles. 1951. Arizona flora. University of California Press, Berkeley, U.S.A.
McDougall, W.B. 1973. Seed plants of northern Arizona. Museum of Northern Arizona, Flagstaff, U.S.A.
Nuttall, T. 1848. Descriptions of plants collected by Mr. William Gambel in the Rocky Mountains and Upper California. Proc. Acad. Nat. Sci. Philadelphia 4:14. https://www.biodiversitylibrary.org/item/28006#page/32/mode/1up
Reveal, J.L. 2005. Eriogonum. In: Flora of North America Editorial Committee, eds. 1993+. Flora of North America North of Mexico. 25+ vols. Oxford Univ. Press, New York, U.S.A. and Oxford, U.K. Vol. 5, pp. 221–430.
Reveal, J.L. 2012. Polygonaceae. In: Holmgren, N.H., P.K. Holmgren, J.L Reveal, and collaborators, Intermountain flora, Vol. 2, Part A. The New York Botanical Garden, Bronx, U.S.A. Pp. 196–387.
Stokes, S. 1941. Eriogonum racemosum var. desertorum. Leafl. W. Bot. 3(1):17.
SEINet – AZ/NM Node. Biodiversity occurrence data. Accessed through the SEINet – AZ/NM Node, 2024–2026.
Welsh, S.L. 1984. Utah flora: Polygonaceae. Great Basin Naturalist 44(4):543. https://scholarsarchive.byu.edu/gbn/vol44/iss4/1
Welsh, S.L. & N.D. Atwood. 1993. New taxa and new nomenclatural combinations in the Utah Flora. Rhodora 95(884):392–421.
Welsh, S.L., N.D. Atwood, S. Goodrich, & L.C. Higgins. 2003. A Utah flora (ed. 3). M.L. Bean Life Science Museum, Brigham Young Univ. Press, Provo, U.S.A. p. 512.
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