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Castilleja xanthotricha

An Oregon-native perennial in the broomrape/paintbrush group (Orobanchaceae) with green foliage, a taproot and softly hirsute stems 10–20 cm tall, blooming from early April to early July with small about 0.75-inch flowers lacking obvious petals that are creamy-yellow to greenish-brown on short, broad bracts, endemic to sagebrush hills along the John Day River drainage at 400–800 m in north-central Oregon

Is Castilleja xanthotricha growing in your garden? Record it and all of your plants in Known.

Common Names

John Day Paintbrush, Yellow-Hair Indian Paintbrush

Summary

Yellow-hair Indian paintbrush is a native Oregon perennial in the Orobanchaceae family, typically 10–20 cm tall from a taproot with long softly hairy stems and triangular leaves with 0–5 lobes. Inflorescences are 3–14 cm long with proximal greenish bracts and a curved corolla, and flowering occurs in spring to summer in sandy grassland habitat at 400–800 m elevation.

In cultivation, it prefers open, sunny sites with poor sandy soil; propagation is by seed sown in spring (germination 1–3 months at 16–21°C) and by cuttings in late summer.

Lifecycle

Perennial

Height

4-8 inches

Sunlight Requirements

Ideally full sun.

Soil Type

Sandy soil

Soil Drainage

Well-drained sandy soil

Bloom Color

White to cream (bracts) with deep purple corolla lip

Bloom Time

Spring

Foliage Color

Green

Fall Foliage Color

Green

Seasons of Interest

Spring and Summer

Propagation Methods

Seeds (spring; surface sowing), Cuttings (late summer)

Taxonomy

Taxonomic Rank
Species
Author
Pennell
Publication
Notul. Nat. Acad. Nat. Sci. Philadelphia 74: 5 (1941)

Superior Taxa

Kingdom
Plantae
Subkingdom
Pteridobiotina
Phylum
Angiosperms
Order
Lamiales
Family
Orobanchaceae
Genus
Castilleja

References

Castilleja xanthotricha Pennell. flora.kadel.cz.
Yellow-haired Paintbrush, Yellow-leaved Paintbrush…. science.halleyhosting.com.
Castilleja xanthotricha Pennell. skalnicky.kadel.cz.
Castilleja xanthotricha. ceb.wikipedia.org.
Castilleja xanthotricha vs. Castilleja septentrion…. nwwildflowers.com.
the ESA list proposedpending Indian paintbrush spe…. onda.org.
OregonFlora - Occurrence Profile. oregonflora.org.
Castilleja xanthotricha Pennell | Plants of the Wo…. powo.science.kew.org.
Castilleja xanthotricha. species.data.kew.org.
Castilleja xanthotricha. vi.wikipedia.org.
Castilleja xanthotricha | yellow-hair Indian paint…. wildflowersearch.org.
Yellowhair Indian Paintbrush (Castilleja xanthotri…. fws.gov.
World Flora Online. worldfloraonline.org. June 2024.