Hymenoxys species

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Scientific Name Hymenoxys grandiflora (Tetraneuris grandiflora, Rydbergia grandiflora) USDA PLANTS Symbol
HYGR5
Common Name Old-man-of-the-mountain, Alpine Sunflower ITIS Taxonomic Serial No.
514996
Family Asteraceae (Sunflower) SEINet
Reference
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Description Life zones and habitat: Alpine; tundra.
Plant: Short erect perennial 4 to 12 inches tall; 1 to 10 stout, grayish, woolly stems.
Leaves: Mostly basal to 4 inches long divided into narrow, somewhat hairy lobes.
Inflorescence: Nodding, conspicuous composite flower heads 4 inches across with notched yellow ray flowers (petals); large, domed disk with hundreds of florets; narrow, woolly phyllaries beneath.
References: Descr. adapted from "Guide to Colorado Wildflowers" by G.K. Guennel, and SEINet.
Colorado Status
Native
Scientific Name Hymenoxys hoopesii USDA PLANTS Symbol
HYHO
Common Name Orange Sneezeweed, Owls-claws ITIS Taxonomic Serial No.
507616
Family Asteraceae (Sunflower) SEINet
Reference
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Description Life zones and habitat: Foothills to subalpine; open woods, meadows, roadsides.
Plant: Erect perennial 12 to 40 inches tall; stout, leafy stem, often purple-red-tinted.
Leaves: Cauline (on stem) to 10 inches long, alternate, thick, oval to lance-shaped; upper leaves smaller.
Inflorence: Composite flower heads 3 inches across with drooping yellow to orange ray flowers (petals), teeth on tips; orange-yellow domed disk with hundreds of florets; somewhat hairy phyllaries beneath.
References: Descr. adapted from "Guide to Colorado Wildflowers" by G.K. Guennel, and SEINet.
Colorado Status
Native
© Tom Lebsack 2017