◊ Bras. Saulenkakt. 87 (1933)
◊◊ Cereus setaceus SD ex DC - Prodr. 3:469 (1828)
Cereus coccineus SD ex DC - Prodr. 3:469 (1828)
Cereus coccineus SD ex Pfeiff (non DC 1828) - Enum. Cact. 122 (1837)
Cactus triangularis Vell non L - Fl. flumin. 206 (1829), Icones 5: tab. 24 (1831)
Cereus setaceus viridior SD - Hort. Dyck. 65 (1834)
Cereus speciosissimus coccineus (SD)Rümpl - in: Förster, Handb. Cact. ed. 2:773 (1885)
Cereus lindbergianus Web - in: Schumann, Gesamtb. 151 (1898)
Cereus lindmanii Web - in: Schumann, Gesamtb. 163 (1898)
Cereus hassleri KSch - Monatschr. Kakt. 10:45 (1900)
Cereus speciosus coccineus (SD)Gräbener - Monatschr. Kakteenk. 19:137 (1909)
Heliocereus coccineus (SD)Br&R - Contr. US Nat. Herb. 12:433 (1909)
Mediocactus coccineus (SD&DC)Br&R - Cact. 2:211"' (1920)
Mediocactus setaceus (DC)Borg - Cacti ed. 2, 213 (1951)
Mediocactus hassleri (KSch)Backbg - Backeberg 2:798 (1959)
Mediocactus lindmanii (Web)Backbg - Backeberg 2:798 (1959)
Selenicereus rizzinii Scheinvar - Rev. Bras. Biol. 34:249 (1974)
Heliocereus coccineus (SD)Scheinvar - CSMex 28:41-48 (1983)
Hylocereus setaceus (SD ex DC)Bauer - Cact. Syst. Init. 17:29 (2003)
- Stems three-angled, sometimes four or five-angled, 2 4 cm diameter. Areoles 2 3 cm apart. Spines 1 3, conical, 1 2 mm long, brown. Flower 25 30 cm diameter. Ovary with small scales, felt and spines. Receptacle with larger scales. Fruit ovoid, tuberculate, with bristly spines, red.
- Argentina (Chaco, Corrientes, Formosa, Misiones); Bolivia, Brazil: common outside Amazonia;
Paraguay. Flowering time southern spring and summer.
Cact. 2:211"', plate 37 (Mediocactus coccineus)
Backeberg 2:794", 796", 797" (Mediocactus coccineus)
Backeberg 2:798, 799", 800" (Mediocactus hassleri)
Epiphytes 5-19:55 (Mediocactus coccineus)
KuaS 15(12):199" (Mediocactus coccineus)
Bradleya 7:92 (S. rizzinii)
Bradleya 18:6
EPIG 8(4):131, 10(2):45, 47"
NCL 140"
CEB 130'', 194
Rodriguésia 71' (2020)