Euphorbia aaron-rossii (Euphorbiaceae), a new species from Marble and Grand Canyons of the Colorado River,Arizona |
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| Authors: | Arthur H Holmgren Noel H Holmgren |
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| Institution: | 1. Department of Biology, Utah State University, 84322, Logan, UT
2. New York Botanical Garden, 10458-5126, Bronx, NY
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| Abstract: | The new species,Euphorbia aaron-rossii from along the Colorado River within the inner gorge of Marble Canyon and Grand Canyon, Coconino Co., Arizona, is described, mapped, and illustrated. Scanning electron micrographs of the seed coat are included. It clearly belongs to subgenusAgaloma sectionTithymalopsis, where it is most closely related toE. wrightii. |
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