Yucca whipplei ssp.newberryi (McKelvey) Hochstätter
Arizona - Newberry Yucca.Succulenta 79(1): 32-44.2000.
Basionym: Yucca newberryi MeKelvey. - Yuccas of the SW. U. S. 2: 49-52.1947.
Type: Schott, s. n. Tubac Valley, near Nogales, Arizona (MO 135693).
Other representative material studied.
| Arizona: | fh 1179.71, Lava Falls area (deposited 7 May 1995 in SRP); fh 1181.5, inner Grand Canyon, 900 m; Hualapai Reservation, near the Colorado River, 1,300 m. |
Yucca whipplei ssp.newberryi, fh 1179.91, 7th May 1998, Lava Falls Area
inner Grand Canyon, AZ., 900m growing in lava soil.