Rydbergia grandiflora

Hymenoxys grandiflora
Fig. nº 7
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Eudicots
(unranked):	Asterids
Order:	Asterales
Family:	Asteraceae
Genus:	Hymenoxys
Species:	H. grandiflora
Binomial name
Hymenoxys grandiflora (Torr. ex A.Gray) K.F.Parker 1950
Synonyms
Synonymy Actinea grandiflora (Torr. & A.Gray ex Torr. & A.Gray) Kuntze Actinella grandiflora Torr. & A.Gray 1845 Cephalophora grandiflora (Torr. & A.Gray) Walp. Ptilepida grandiflora (Torr. & A.Gray) Rose Rydbergia grandiflora (Torr. & A.Gray ex Torr. & A.Gray) Greene Tetraneuris grandiflora (Torr. & A.Gray ex Torr. & A.Gray) K.F.Parker

Hymenoxys grandiflora is a North American species of flowering plant in the daisy family known by the common names graylocks four-nerve daisy or graylocks rubberweed. It is native to high elevations in the Rocky Mountains of the western United States, in the states of Montana, Idaho, Wyoming, Utah, Colorado, and New Mexico.

Hymenoxys grandiflora is a perennial herb up to 30 cm (1 foot) tall. One plant generally produces one flower head per stem, up to 10 per plant. Each head has 15–44 ray flowers and 150–400 disc flowers.

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