Helianthus nuttallii var. rydbergii (Britton) B.Boivin

, Phytologia 23: 74 (1972). BHL
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External links to taxonomic opinions:
WFO POWO
IPNI Life Sciences Identifier (LSID)
urn:lsid:ipni.org:names:119198-2
Publication
Phytologia; Designed to Expedite Botanical Publication. New York
Collation
23: 74
Family as entered in IPNI
Asteraceae

Links

Nomenclatural link
Helianthus rydbergii Britton, Man. Fl. N. States [Britton] 993 (-994) (1901).
Same citation as
Helianthus nuttallii var. rydbergii (Britton) B.Boivin, Phytologia 23(1): 74 (1972).