''Hesperoyucca newberryi'', commonly known as the Grand Canyon Quixote plant or Newberry's yucca, is a plant species endemic to

Arizona Arizona ( ; nv, Hoozdo Hahoodzo ; ood, Alĭ ṣonak ) is a state in the Southwestern United States. It is the 6th largest and the 14th most populous of the 50 states. Its capital and largest city is Phoenix. Arizona is part of the Fou ...

. It is found only in Mohave and Coconino Counties, on the walls of canyons near the

Colorado River The Colorado River ( es, Río Colorado) is one of the principal rivers (along with the Rio Grande) in the Southwestern United States and northern Mexico. The river drains an expansive, arid drainage basin, watershed that encompasses parts of ...

.Flora of North America v 26 p 441, ''Hesperoyucca newberryi''
/ref> ''Hesperoyucca newberryi'' is a perennial forming a rosette. It is

semelparous Semelparity and iteroparity are two contrasting reproductive strategies available to living organisms. A species is considered semelparous if it is characterized by a single reproductive episode before death, and iteroparous if it is characteri ...

(flowering once then dying). Leaves are narrow, up to long but usually less than across. Flowering stalks are up to tall, bearing cream-colored flowers. The fruit is a dry, egg-shaped capsule about long.United States Department of Agriculture, National Forest Service database, ''Hesperocallis whipplei, H. newberryi''
/ref>

References

{{Taxonbar, from=Q15517008 Agavoideae Flora of Arizona Endemic flora of the United States Flora of the Colorado Plateau and Canyonlands region Natural history of the Grand Canyon Plants described in 1947 Flora without expected TNC conservation status