Anulocaulis leiosolenus (Torr.) Standl. var. howardii Spellenberg & T.Wootten
A large rosette-forming perennial with pinkish flowers that are open at night. This variety is endemic to the gypsum north of the entrance to Pup Canyon on the west side of the Guadalupe Mountains.
Plant habit north of Pup Canyon, west side of the Guadalupe Mountains, Otero County, New Mexico, 20 Aug 2013.
Plant habit north of Pup Canyon, 20 Aug 2013.
Wilted flowers north of Pup Canyon, 20 Aug 2013.
Immature fruit north of Pup Canyon, 20 Aug 2013.
Immature fruit north of Pup Canyon, 20 Aug 2013.
Basal rosette north of Pup Canyon, 20 Aug 2013.
Glandular rings on the scape, north of Pup Canyon, 20 Aug 2013.