Horridocactus marksianus (F.Ritter) Backeb.

, Cactaceae (Backeberg) 6: 3797 (1962).
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External links to taxonomic opinions:
POWO
IPNI Life Sciences Identifier (LSID)
urn:lsid:ipni.org:names:124113-2
Publication
Die Cactaceae: Handbuch der Kakteenkunde
Collation
6: 3797
Family as entered in IPNI
Cactaceae

Links

Nomenclatural link
Pyrrhocactus marksianus F.Ritter, Succulenta (Netherlands) 1960: 2 (1960).
Same citation as
Horridocactus marksianus (F.Ritter) Backeb., Cactaceae (Backeberg) vi. 3797 (1962).