Mexico, Oaxaca, 16 mi NW of Tehuantepec along Panamerican Hwy.
152 meters
500 ft.
Foothills with short-tree forest; Guiengola limestone.
Single, few-leaved, gray, open rosettes; teeth variable; spikes 2-5 m tall, flg. From near base; flowers pale yellow with open ascending segments; ovary green. Macdougal reports it as an endemic to the Guiengola limestone; 500 to 3000 ft. elevations. 8 live.