Puneet Varma (Editor)

Castilleja exserta

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Kingdom
  
Family
  
Scientific name
  
Castilleja exserta

Rank
  
Species

Order
  
Genus
  
Castilleja

Higher classification
  
Indian paintbrush

Castilleja exserta Castilleja exserta purple paintedcup Go Botany

Similar
  
Indian paintbrush, Orthocarpus, Dichelostemma capitatum, Layia platyglossa, Lasthenia californica

Castilleja exserta (formerly Orthocarpus purpurascens) is a species of plant in the genus which includes the Indian paintbrushes. Its common names include purple owl's clover, escobita, and exserted Indian paintbrush.

Contents

Castilleja exserta SEINet Arizona Chapter Castilleja exserta

This species is native to the Southwestern United States in various habitats of California, Arizona, and New Mexico; and to Northwestern Mexico. It is an introduced species in Hawaii.

Castilleja exserta httpsuploadwikimediaorgwikipediacommonsthu

Description

Castilleja exserta Purple Owl39s Clover Castilleja exserta ssp exserta

The Castilleja exserta plant is an annual about 1 foot (0.30 m) tall with a hairy stem covered in thready leaves. Like other related Castilleja plants, this is a hemiparasite which derives some of its nutrients directly from the roots of other plants by injecting them with haustoria. This is the reason for its small, reduced leaves.

Castilleja exserta Purple Owl39s Clover Castilleja exserta ssp exserta

Although this species is variable in appearance and easily hybridizes with other Castilleja species, it generally bears a brightly colored inflorescence of shaggy pink-purple or lavender flowers. The thin, erect bracts are usually tipped with the same color, giving the inflorescence the appearance of a paintbrush.

Varieties

Subspecies include:

Castilleja exserta Castilleja exserta California Native Seeds SampS Seeds

  • Castilleja exserta ssp. exserta — pale purple owlclover.
  • Castilleja exserta ssp. latifolia — wideleaf Indian paintbrush; endemic to coastal California.
  • Castilleja exserta ssp. venusta — endemic to California: Mojave Desert, southern San Joaquin Valley.
  • Bay checkerspot butterfly host

    Castilleja exserta FileCastilleja exserta 10jpg Wikimedia Commons

    This is a crucial host plant for the Bay checkerspot butterfly (Euphydryas editha bayensis), endemic to the San Francisco Bay region in California, and a threatened species in the state.

    The seeds were harvested by indigenous peoples of California, for food.

    Castilleja exserta Purple Owl39s Clover Castilleja exserta ssp exserta

    References

    Castilleja exserta Wikipedia


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