Euphorbia aaron-rossii (Euphorbiaceae), a new species from Marble and Grand Canyons of the Colorado River, Arizona
Holmgren AH and Holmgren NH. 1988. Euphorbia aaron-rossii (Euphorbiaceae), a new species from Marble and Grand Canyons of the Colorado River, Arizona. Brittonia. 40(4):357-362
This description of the new species, Euphorbia aaron-rossii, from along the Colorado River within the inner gorge of Marble Canyon and Grand Canyon includes a marked map, scanning electron micrographs of the seed coat, illustrations of the plant and its parts, and written scientific detail. 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 subgenus Agaloma section Tithymalopsis, where it is most closely related to E. wrightii.
- Type
- Journal Article
- Authors
- Holmgren, Arthur; Holmgren, Noel
- Units
- GLCA , GRCA
- Keywords
- Botany, Coconino County (AZ), Colorado River, Flowers, Inventory (Baseline), Marble Canyon (AZ), Marble Canyon spurge (Euphorbia aaron-rossii), NPSRecord, Plants, Rare Species, Riparian Zone