Harmonia doris-nilesiae
Niles' harmonia
(c) Trevor Van Loon, some rights reserved (CC BY) · licence
Family: Asteraceae · Type: Herb · Native
Conservation status: CNPS 1B.1
Harmonia doris-nilesiae (Niles' harmonia) is a native California herb in the Asteraceae family.
Niles' harmonia is a rare (CNPS 1B.1) California native annual found in southern Klamath Ranges on serpentine slopes at elevations of 800 to 1,600 meters. Flowering from May to June, this plant produces white ray flowers 2.5 to 7 millimeters long with delicate soft-hairy phyllaries. Growing 9 to 40 centimeters tall with an unbranched central stem and branching structure supporting flower heads, it has leaves distributed evenly along the stem. Its leaves are approximately equally distributed, creating a uniform appearance across the plant's structure. The flower heads are generally erect in bud and fruit, with 4 to 8 ray flowers and 8 to 20 disk flowers.
Identification and appearance
Key characters: 1 sympatric species; key differentiator is ray fruit curvature and pappus scale length
Habitat and range
Habitat: Serpentine slopes
Elevation: 800-1600 m
California counties: Trinity, Shasta, Butte, Tehama
Bloom period
Harmonia doris-nilesiae blooms May-Jun.
Conservation status
CNPS 1B.1
How to tell it apart
vs Hippodamia: Harmonia is a plant with yellow flowers; Hippodamia is a ladybird beetle.; vs Coccinella: Harmonia is a flowering plant; Coccinella is a ladybird beetle.; vs Cycloneda: Harmonia is a plant genus; Cycloneda is a beetle genus.; vs Chilocorus: Harmonia is a composite flower; Chilocorus is a ladybird beetle.; vs Olla: Harmonia is a tarweed plant; Olla is a beetle.
Frequently asked questions
Is Harmonia doris-nilesiae native to California?
Yes. Harmonia doris-nilesiae is native to California (recorded as native).
When does Harmonia doris-nilesiae bloom?
Harmonia doris-nilesiae blooms May-Jun.
Where in California does Harmonia doris-nilesiae grow?
Harmonia doris-nilesiae occurs in Trinity, Shasta, Butte, Tehama, at elevations of 800-1600 m.
What plant family does Harmonia doris-nilesiae belong to?
Harmonia doris-nilesiae is in the Asteraceae family, genus Harmonia.
Is Harmonia doris-nilesiae rare or endangered?
Harmonia doris-nilesiae carries California Rare Plant Rank 1B.1, state rank S2S3.
Related species
Other California species in the same genus, family, or bioregion.
Sources: Jepson eFlora · CNPS Rare Plant Inventory · Index of California Plant Names · CalPhotos · CDFW CNDDB
Last updated 2026-10-07
Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, Cal-IPC, and more.