Echinoccrcus triglochidiatus v neomcxicanus Sundlev Benson

Clumping, spines 11 22 of w hich 4 are csp to 4 cm long. Fl scarlet, salmon-pink or white. arizonicus (Rose ex Orcun) Benson similar with fever, thicker spines (Arizona), v. gurneyi Benson stems few, spines 8 10 including 1 -2 csp'to 2 em (S\V USA, NAV Mexico). |HS/PM]

ni.STRIBLHON: SK Arizona, Sand \\ New Mexico, \V Texas; Mexico, N Chihuahua. OTHKR NAMKs: F. nisei, F. nennainittiu. v. ari/onicus: F. arizonicus.

Echinoccrcus triglochidiatus v. melanacanthus (Englm.) Benson Forming mounds, stems 7.5(-15) cm in lengtli b\ 2.5-6 cm; spines 6-14 of which I -3 aa- straight, smooth csp 'fa. biennis' is a spineless, usually dwarf fonts from mountains in Utah and Colorado. |HK I258/HS/PM| DISTRIBUTION: As for the species. OITthR NAMES: F. roe/nen, F. meeineus 'fa. inermis': F 'incrtms', F. hexaeJrus, Fl hextieJnis r. inermis.

Echinoccrcus vicrcckii W'erd. Stems yellowish, rihs 6 9, tuhcrculatc, spines very thin. Fl violet-pink to 11 cm broad. IllustrateĀ«! is v. morricalii (Riha) N.P. Taylor. Usually seen as the slim-stemmed almost spineless plant illustrated but ihis grades into a larger, much thicker-stemmed and promincntK spincd plant II1K376/IIS/PMI

niSTKlBt HON: Mexico. S\V Tamaulbas and adjacent Nuevo I,con.

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