Hymenoxys grandiflora
| Hymenoxys grandiflora | |
|---|---|
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Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Hymenoxys |
| Species: | H. grandiflora
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| Binomial name | |
| Hymenoxys grandiflora | |
| Synonyms[1] | |
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Synonymy
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Hymenoxys grandiflora is a North American species of flowering plant in the daisy family known by the common names graylocks four-nerve daisy,[2] graylocks rubberweed, or old man of the mountain.[3] It is native to high elevations in the Rocky Mountains of the western United States.
Description
[edit]H. grandiflora is a perennial herb up to 30 centimeters (1 foot) tall. The leaves are 7.5–10 cm (3–4 in) long.[4] The plant generally produces one flower head per stem, up to 10 per plant, present between June and August.[4] Each head has 15–44 ray flowers and 150–400 disc flowers.[5] The seeds are five-sided with narrow scales at the tip.[4]
The species has the largest flowers of any in its genus, hence the specific epithet grandiflora (large-flowered).[4]
Distribution and habitat
[edit]The plant 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.[6][7] It can be found on rocky slopes, meadows, and tundra environments.[4]
References
[edit]- ^ The Plant List, Hymenoxys grandiflora (Torr. & A.Gray ex Torr. & A.Gray) K.F.Parker
- ^ NRCS. "Tetraneuris grandiflora". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 9 December 2015.
- ^ "Old man of the mountain - Hymenoxys grandiflora". Colorado Plant Database. Colorado State University Extension, Jefferson County. Retrieved 25 March 2020.
- ^ a b c d e Spellenberg, Richard (2001) [1979]. National Audubon Society Field Guide to North American Wildflowers: Western Region (rev ed.). Knopf. pp. 381–382. ISBN 978-0-375-40233-3.
- ^ Flora of North America, Hymenoxys grandiflora (Torrey & A. Gray) K. F. Parker, 1950. Graylocks rubberweed, four-nerved daisy
- ^ Biota of North America Program 2014 distribution map
- ^ SEINet, Southwestern Biodiversity, Arizona chapter description, photos, distribution map
External links
[edit]
Media related to Hymenoxys grandiflora at Wikimedia Commons
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