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Hydrophyllaceae family
Scott Mountain Phacelia Howellanthus dalesianus
Native
Scott Mountain Phacelia is a perennial wildflower native to the lower 48 states.
More about this plant
Phacelia dalesiana is a species of flowering plants in the family Hydrophyllaceae endemic to California. It is commonly known as Scott Mountain phacelia or Howell's phacelia. Under the synonym Howellanthus dalesianus, it was considered to be the only species in the monotypic genus Howellanthus. Wikipedia →
Growing & care
USDA PLANTS · TRY Conditions
Sources · Conditions
Cold hardiness (derived) — Hardiness
- Hardiness
- ≥ zone 11 derived from its U.S. range
Size & form
Sources · Size & form
USDA PLANTS — Lifespan
- Lifespan
- Perennial
In the garden
Herb layer — Sits in the herb of a layered food forest or polyculture.Open guide →
derived roles
Species characteristics from USDA PLANTS (public domain) + TRY (CC BY) — general guidance, not a
guarantee for your exact site. Deer "browsing" is documented palatability, not a deer-proof claim.
Related plants
More Howellanthus →
Native
Alkali Phacelia
Phacelia neglecta
●●●○○ 
Native
Alpine Phacelia
Phacelia lyallii
●●●○○ 
Native
Arizona Phacelia
Phacelia arizonica
●●●○○ 
Native
Attwood's Phacelia
Phacelia argillacea
●●●○○ 
Native
Aven Nelson's Phacelia
Phacelia anelsonii
●●●○○ 
Native
Baker's Phacelia
Phacelia bakeri
●●●○○ Same genus / family, ranked by ecological value — from the PlantKey catalog
Sources for this entry (9) Open & cited
[01] Scientific name & family — USDA PLANTS (DwCA, Zenodo 17903503)
[02] Growth habit & duration — USDA PLANTS (DwCA, Zenodo 17903503)
[03] Native status & distribution — USDA PLANTS (DwCA, Zenodo 17903503)
[04] Common name — USDA PLANTS (via GBIF)
[05] Invasive / introduced status — USDA PLANTS (DwCA, Zenodo 17903503) — native status
[06] Photos — Wikimedia Commons — CC, credited per image
[07] Description — Wikipedia (CC BY-SA)
[08] Cold hardiness (derived) — Derived from U.S. range × USDA PHZM zones
[09] County range — GBIF Open Data — open-licensed occurrences (CC0/CC-BY) → county
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PlantKey’s data is open under CC BY-SA 4.0 — free to reuse and adapt, with attribution and the same licence. Photos keep their own per-image licence + credit (see Sources above).
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