Tetraneuris grandiflora (Torr. & A. Gray ex A. Gray) K.F. Parker
Graylocks Four-nerve Daisy, Old-man-of-the-mountain, Alpine Sunflower, Rydbergia
Asteraceae (Aster Family)
Synonym(s): Actinea grandiflora, Hymenoxys grandiflora, Rydbergia grandiflora
USDA Symbol: TEGR3
Out of a low mat of feathery leaves covered with cottony white hairs, rise 3-4 in. sunflowerlike flower heads on stems usually less than a foot high. The bright yellow petals with three teeth at the tip surround a broad, domed center which turns from yellow to tan with age.
From the Image Gallery
Bloom InformationBloom Color: Yellow
Bloom Time: May , Jun , Jul
DistributionUSA: CO , ID , MT , UT , WY
Native Distribution: S.w. MT & adjacent ID, s. to w. CO & n.e. UT
Native Habitat: Alpine tundra; mt. meadows
Growing ConditionsLight Requirement: Sun
Soil Moisture: Moist
Soil pH: Circumneutral (pH 6.8-7.2)
Soil Description: Moist, gravelly, limestone-rich soils.
Conditions Comments: Grows best where summers are cool and dry. Some populations die abruptly after flowering, so it is a good idea to stagger plantings over several years.
PropagationDescription: Propagate by seed.
Seed Collection: Not Available
Seed Treatment: A moist, cold treatment enhances germination.
Commercially Avail: yes
Find Seed or Plants
View propagation protocol from Native Plants Network.
From the National Suppliers DirectoryAccording to the inventory provided by Associate Suppliers, this plant is available at the following locations:
Oregon Native Plant Nursery - Woodburn, OR
Additional resourcesUSDA: Find Tetraneuris grandiflora in USDA Plants
FNA: Find Tetraneuris grandiflora in the Flora of North America (if available)
Google: Search Google for Tetraneuris grandiflora
MetadataRecord Modified: 2015-05-19
Research By: TWC Staff