USA, California, San Bernardino, East of large wash south of Grotto Hills. 0.8 mile N of Lanfair then 1.4 miles west on Old Government Road (trail of the Whipple Expedition, 1853).
35.135193 -115.211989 +-969m.
TRS: T12N R16E sec 12
1290 meters
4200 ft
Forest of Yucca brevifolia with abundant Hilaria rigida.
Yucca brevifolia, Hilaria rigida
Upper segments of some plants are short-, stout-spined as O erinacea but are long-spined as O. ursina below. Others in this population (6 m. away) are nearly typical O. ursina.