New species of Mentzelia and Phacelia are described from northwestern New Mexico, USA, as Mentzelia todiltoensis, N. Duane Atwood & Stanley L. Welsh, and Phacelia sivinskii N. D. Atwood, sp. nov. The new Mentzelia is compared to M. humilis based on similarities in seed, fruit, leaf, and flower morphology and to M. memorabalis in stem, leaf, and fruit morphology. Phacelia sivinskii is compared to P. constancei N. D. Atwood on the basis of seed, leaf, and flower morphology.
Atwood, N. Duane and Welsh, Stanley L.
"New species of Mentzelia (Loasaceae) and Phacelia (Hydrophyllaceae) from New Mexico,"
Western North American Naturalist: Vol. 65:
3, Article 8.
Available at: https://scholarsarchive.byu.edu/wnan/vol65/iss3/8