Plant of the Month Pages

Owl’s Clover
- Castilleja exserta

Common Name(s):Owl’s Clover
Scientific Name:Castilleja exserta
Family:Orobanchaceae (Broomrape)
Plant Type:Annual
Size:up to 15 inches
Habitat:Grasslands and Coastal Sage Scrub
Blooms:January to June
Fire Response:Germinate from Seed

A patch of Owl's Clover provides a bright splash of color as well as nectar for insects. It blooms from March to May. The flowers and bracts occur in dense spikes at the tops of the base-branched stems and are usually pinkish-purple, although white ones may be spotted infrequently. Leaves along the branching stem are pinnately cleft and the plant is covered with fine hairs. The plant is partially parasitic.

The genus name Castilleja is for 18th century professor and botanist Professor Domingo Castillejo. The species name exserta means "protruding". Sometimes Owl's Clover is placed in the Broomrape or Orobanchaceae family. The Figwort family or Scrophulariaceae includes other common colorful paintbrush-like flowers like Indian Paintbrush and Indian Warrior, as well as the colorful and interesting-looking Monkey Flowers and Snapdragons.

Contributed by Liz Baumann

Previous POTM

Featured Plants in the Orobanchaceae (Broomrape) Family:

Owl’s Clover - Originally featured: April 2012
Last modified: May 17 2024 10:46:22.
Number of Images: 13
Image Size Total: 1,966,324


Wildflowers of the Santa Monica Mountains, by Milt McAuley
Flowering Plants: The Santa Monica Mountains, Coastal and Chaparral Regions of Southern California, by Nancy Dale
Chumash Ethnobotany: Plant Knowledge Among the Chumash People, by Jan Timbrook
Leaf Shapes Primer - Botanical Terms for Leaves: - Link

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