Castilleja rubicundula

Castilleja rubicundula is a species of Indian paintbrush known by the common name cream sacs.

Castilleja rubicundula
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Lamiales
Family: Orobanchaceae
Genus: Castilleja
Species:
C. rubicundula
Binomial name
Castilleja rubicundula
(Jepson) Chuang & Heckard
Synonyms

Orthocarpus rubicundula

Distribution

This annual wildflower is native to northern California, and into southwestern Oregon. It lives on coastal and inland grasslands.[1]

Description

Castilleja rubicundula is a hairy, glandular annual growing to about half a meter in height, the stem leafy with lance-shaped foliage.

It produces a terminal inflorescence and sometimes branches off several more inflorescences. The white, pink, yellow, or bicolored flowers are divided into usually three pouches, making them look inflated. Each pouch is about a centimeter wide and half a centimeter deep. Each flower has a beak extending about half a centimeter above the pouches.

The fruit is a capsule containing tiny seeds less than a millimeter long. Under magnification the seed's honeycomb-patterned coat is visible.

Subspecies

Subspecies and varieties include:[2]

  • Castilleja rubicundula ssp. lithospermoides
  • Castilleja rubicundula ssp. rubicundula — endemic to the Sacramento Valley, California.[3]
  • Castilleja rubicundula var. rubicundula

References
  1. Jepson: Castilleja rubicundula
  2. USDA: Subordinate taxa of Castilleja rubicundula
  3. Calflora: Castilleja rubicundula ssp. rubicundula


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