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Mammillaria prolifera var. texana (Engelm.) Borg

Cacti
Rank:Variety
Family: Cactaceae

Grusonia emoryi (Engelm.) Pinkava

J. Arizona-Nevada Acad. Sci.
Rank:Species
Family: Cactaceae

Echinocereus rigidissimus var. rigidissimus


Rank:Variety
Family: Cactaceae

Opuntia polyacantha var. arenaria (Engelm.) B.D. Parfitt

Cact. Succ. J. (Los Angeles)
Status:Synonym of Opuntia arenaria Engelm.
Rank:Variety
Family: Cactaceae

Echinocereus Engelm.

Mem. Tour N. Mexico 91. 1848.
Status:Accepted Name
Rank:Genus
Family: Cactaceae
Order: Caryophyllales

Opuntia engelmannii var. lindheimeri (Engelm.) B.D. Parfitt & Pinkava

Madroño
Rank:Variety
Family: Cactaceae

Cylindropuntia bigelovii var. bigelovii


Rank:Variety
Family: Cactaceae

Cylindropuntia acanthocarpa var. major (Engelm.) Pinkava

J. Arizona-Nevada Acad. Sci.
Rank:Variety
Family: Cactaceae

Hamatocactus Britton & Rose

Cactaceae 3: 104. 1922. (12 Oct 1922)
Status:Accepted Name
Rank:Genus
Family: Cactaceae
Order: Caryophyllales

Coryphantha echinus (Engelm.) Britton & Rose

Cactaceae
Status:Ambiguous
Rank:Species
Family: Cactaceae

Echinocereus pentalophus (DC.) Haage

Cact.-Verz.
Rank:Species
Family: Cactaceae

Sclerocactus cloverae K.D. Heil & J.M. Porter

Haseltonia
Status:Accepted Name
Rank:Species
Family: Cactaceae
Order: Caryophyllales

Mammillaria meiacantha Engelm.

Proc. Amer. Acad. Arts
Rank:Species
Family: Cactaceae

Ariocarpus Scheidw.

Bull. Acad. Roy. Sci. Bruxelles 5(8): 491–492, f. 1–5. 1838.
Status:Accepted Name
Rank:Genus
Family: Cactaceae
Order: Caryophyllales

Peniocereus greggii var. transmontanus (Engelm.) Backeb.

Cactaceae
Rank:Variety
Family: Cactaceae

Opuntia santarita (Griffiths & Hare) Rose

Smithsonian Misc. Collect.
Status:Accepted Name
Rank:Species
Family: Cactaceae
Order: Caryophyllales

Opuntia chisosensis (M.S. Anthony) D.J. Ferguson

Cact. Succ. J. (Los Angeles)
Rank:Species
Family: Cactaceae

Opuntia basilaris var. basilaris


Rank:Variety
Family: Cactaceae

Ferocactus Britton & Rose

Cactaceae 3: 123. 1922.
Status:Accepted Name
Rank:Genus
Family: Cactaceae
Order: Caryophyllales

Echinocactus polycephalus var. polycephalus


Rank:Variety
Family: Cactaceae

Thelocactus bicolor var. bicolor


Rank:Variety
Family: Cactaceae

Ancistrocactus brevihamatus (Engelm.) Britton & Rose

Cact.
Status:Ambiguous
Rank:Species
Family: Cactaceae

Astrophytum Lem.

Cact. Gen. Sp. Nov. 3. 1839.
Status:Accepted Name
Rank:Genus
Family: Cactaceae
Order: Caryophyllales

Sclerocactus Britton & Rose

Cactaceae 3: 212. 1922. (12 Oct 1922)
Status:Accepted Name
Rank:Genus
Family: Cactaceae
Order: Caryophyllales