Pyrrhocactus bulbocalyx (Werderm.) Backeb.

, Cactaceae (Backeberg) 3: 1565 (1959).
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External links to taxonomic opinions:
POWO
IPNI Life Sciences Identifier (LSID)
urn:lsid:ipni.org:names:214993-2
Publication
Die Cactaceae: Handbuch der Kakteenkunde
Collation
3: 1565
Family as entered in IPNI
Cactaceae

Links

Nomenclatural link
Echinocactus bulbocalyx Werderm., Repert. Spec. Nov. Regni Veg. Sonderbeih. C 136 (1937).
Same citation as
Pyrrhocactus bulbocalyx (Werderm.) Backeb., Cactaceae (Backeberg) iii. 1565 (1959).