Family:
Cactaceae
Subfamily:
Cactoideae
Name:
Echinocactus xeranthemoides (Coulter) Rydberg
Fl. Rocky Mts. and Adjacent Plains: 579 (1917)
Alt. Name:
Basionym:
Echinocactus polycephalus var. xeranthemoides Coulter Contr. U. S.
Nat. Herb. 3: 358 (1896).
Synonyms:
Emorycactus xeranthemoides (Engelmann ex Coulter) Doweld Succulenta 75 (5): 270 (1996)
Homalocephala polycephala subsp. xeranthemoides (J.M. Coult.) Vargas & Bárcenas, PhytoKeys 11: 31-59 (2018)
Type:
Lectotype: Siler s. n. Nov. 1881, No. 106798 (MO); designated by Benson Cacti US & Canada: 951 (1982)
Type Locality:
USA: Arizona, Kanab Wash near the Colorado River
Distribution:
USA: Arizona, Lake Mead to the Vermilion Cliffs, along the Little Colorado River to Grand Falls; southern Utah [?]
Altitude:
460 – 1700m
Collection No:
SB475, 588
Flowering:
Extra Info:
Especially the great difference in the seed characters separates this taxon as a good species from Echinocactus polycephalus. Yellow spined specimens are known.
Compiler:
Unger, Gottfried / at / 2018.3.17.
