Phacelia hastata

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Phacelia hastata
Phacelia hastata (3742971620).jpg

Secure (NatureServe)
Scientific classification e
Kingdom: Plantae
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Boraginales
Family: Boraginaceae
Genus: Phacelia
Species: P. hastata
Binomial name
Phacelia hastata
Dougl. ex Lehm.

Phacelia alpina
Phacelia frigida
Phacelia leucophylla

Phacelia hastata is a species of flowering plant in the borage family, Boraginaceae. Its common names include silverleaf scorpionweed,[1] silverleaf phacelia,[2] and white-leaf phacelia.[3] It is native to western North America from British Columbia and Alberta south to California and east to Nebraska.[1] It can be found in many types of habitat, including scrub, woodland, and forest, up to an elevation of 13,000 feet.[4]


Phacelia hastata is a variable perennial herb with a stem 5 to 50 centimeters long.[5] It is coated in a fine, silvery pubescence.[3] The deeply veined, gray-green leaves are lance-shaped to oval, and smooth-edged, lobed, or divided into leaflets.[5] Most of the leaves are in a tuft around the base of the plant.[3] The flower has an urn- or bell-shaped white or lavender corolla about 4 to 7 millimeters long. The stamens protrude. The fruit is a hairy capsule a few millimeters in length.[5]

There are up to four accepted varieties:[2][6]

  • P. hastata var. charlestonensis – Charleston phacelia, Spring Mountains phacelia; endemic to Nevada[7]
  • P. hastata var. compacta – compact phacelia, timberline phacelia; a matlike form occurring at elevation[8]
  • P. hastata var. dasyphylla – spearshaped phacelia; limited to California and Oregon[9]
  • P. hastata var. hastata – silverleaf phacelia; rangewide[10]



  1. ^ a b Phacelia hastata. NatureServe. 2012.
  2. ^ a b Phacelia hastata. USDA PLANTS.
  3. ^ a b c Phacelia hastata. Burke Museum. University of Washington.
  4. ^ Phacelia hastata. Calflora.
  5. ^ a b c Phacelia hastata. The Jepson Manual.
  6. ^ Phacelia hastata. Integrated Taxonomic Information System (ITIS).
  7. ^ Phacelia hastata var. charlestonensis. Nevada Natural Heritage Program. State of Nevada.
  8. ^ var. compacta. The Jepson Manual.
  9. ^ var. dasyphylla. NatureServe. 2012.
  10. ^ var. hastata. The Jepson Manual.

External links[edit]

  • Phacelia hastata in the CalPhotos Photo Database, University of California, Berkeley