Erigeron bloomeri var. nudatus
Waldo daisy, Waldo Daisy
(c) Jim Morefield, some rights reserved (CC BY), uploaded by Jim Morefield · licence
Family: Asteraceae · Type: Herb · Native
Conservation status: CNPS 2B.3
Erigeron bloomeri var. nudatus (Waldo daisy) is a native California herb in the Asteraceae family, recognized by differs from var. bloomeri by glabrous vs strigose appearance.
Waldo daisy is a rare (CNPS 2B.3) California native perennial found in the Klamath Ranges on serpentine slopes and rocky ridges at elevations of 600 to 2,300 meters. Flowering from May to July, this plant produces white to pale lavender flowers in daisy-like heads. Growing 15 to 40 centimeters tall with slender, slightly ascending stems that are nearly hairless. Its leaves are narrow and lance-shaped, becoming smaller and more sparse toward the top of the plant. The fruit is a small, pale achene with delicate white bristles.
Identification and appearance
Key characters: 29 sympatric species; differs from var. bloomeri by glabrous vs strigose appearance
Habitat and range
Habitat: Serpentine slopes, rocky ridges
Elevation: 600-2300 m
Outside California: southwestern Oregon
Bloom period
Erigeron bloomeri var. nudatus blooms May-Jul.
Conservation status
CNPS 2B.3
How to tell it apart
vs Bellis: Erigeron has double-layered pappus (outer scales + inner bristles); Bellis completely lacks pappus.; vs Symphyotrichum: Erigeron has double pappus (2 layers); Symphyotrichum has single layer of uniform bristles.; vs Corethrogyne: Erigeron has simple unbranched stems; Corethrogyne has branched stems.; vs Pseudognaphalium: Erigeron has flat button-like flower heads; Pseudognaphalium has woolly clustered heads without rays.; vs Artemisia: Erigeron has obvious ray petals around yellow disk; Artemisia lacks ray petals entirely.
Frequently asked questions
Is Erigeron bloomeri var. nudatus native to California?
Yes. Erigeron bloomeri var. nudatus is native to California (recorded as native).
When does Erigeron bloomeri var. nudatus bloom?
Erigeron bloomeri var. nudatus blooms May-Jul.
What plant family does Erigeron bloomeri var. nudatus belong to?
Erigeron bloomeri var. nudatus is in the Asteraceae family, genus Erigeron.
Is Erigeron bloomeri var. nudatus rare or endangered?
Erigeron bloomeri var. nudatus carries California Rare Plant Rank 2B.3, state rank S2.
What habitat does Erigeron bloomeri var. nudatus grow in?
Erigeron bloomeri var. nudatus grows in Serpentine slopes, rocky ridges.
Related species
Other California species in the same genus, family, or bioregion.
Sources: Jepson eFlora · 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.