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Castilleja scabrida
C. scabrida var. scabrida, Capitol Reef National Park, Utah
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Lamiales
Family:	Orobanchaceae
Genus:	Castilleja
Species:	C. scabrida
Binomial name
Castilleja scabrida Eastw.
Varieties
C. scabrida var. barnebyana (Eastw.) N.H.Holmgren C. scabrida var. scabrida
Synonyms
Castilleja barnebyana Castilleja calcicola Castilleja zionis

Castilleja scabrida, commonly known as rough paintbrush or Eastwood paintbrush, is a species of plant in Castilleja, the paintbrush genus from the Intermountain West mainly in the states of Nevada, Utah, and Colorado.

Description

Castilleja scabrida is a perennial plant that grows herbaceous stems from a woody caudex with either a taproot or thick, branched roots. Stems usually reach 7 to 15 centimeters (2.8 to 5.9 in), but occasionally as much as 20 cm (7.9 in), but are decumbent, growing along the ground with upturned ends. Usually there are several stems without branches in each group. Branching may occur in response to injury of growing stems. Though they do not usually branch, they can occasionally have small leafy shoots where the main leaves attach to the stems. The stems are covered in short, stiff, somewhat white hairs that do not have glands.

Leaves are most often gray-green, but occasionally reddish-purple or fully green. The lowest leaves are small, lack chlorophyll, and resemble scales or bracts on a tenth to quarter of the stem. The more fully developed leaves are 1.5 to 5 centimeters long and are linar to lanceolate, narrow and grass like to resembling a spear head, in shape. All the leaves can have smooth edges or the upper most leaves may have one or occasionally two pairs of side lobes. The lobes may spread outwards or curve upwards.

The inflorescence is densely packed with flowers and hairy. The bracts surrounding the flowers are green or green-purple towards the base and usually bright red towards their ends, but can sometimes be brick-red or orange-red. They are linear to lanceolate and usually have three or five lobes, but will sometimes have seven. Their length is 2.5 to 10 cm and have a width of 2.5 to 5 cm. They are more leaf like near the bottom of the inflorescence and become shorter and wider towards the top. The calyx, the sepals, are 19 to 30 mm long and divided into lobes.

Taxonomy

Castilleja scabrida is a species in the Castilleja genus in the Orobanchaceae family. The scientific description and name of Castilleja scabrida was published in 1902 by the self-taught botanist Alice Eastwood. The specimens described by Eastwood were collected in Grand Junction, Colorado by Mr. H.C. Long in the spring of 1890. Later, in 1941, Eastwood described a species she named Castilleja barnebyana that was reclassified by Noel H. Holmgren as a variety of C. scabrida in 1984.

Varieties

Castilleja scabrida has two accepted varieties.

Castilleja scabrida var. barnebyana

The leaves of this variety are more green in color, rarely reddish-purple or gray green. It grows on calcareous rocks. It is only found in the mountains of eastern Nevada and western Utah. It most often is a parasite of Petrophytum caespitosum, mat rock spiraea. Often its stems emerge from within a clump of rock spiraea, though it will also be found with other plants.

Castilleja scabrida var. scabrida

The leaves of this variety are more often grayish in color. Its range is mostly in the high deserts and mountains of Utah and western Colorado, but it does reach a few small areas of Arizona and New Mexico adjacent to the Four Corners. It most often grows on sandstone or soils derived from sandstones, but is sometimes found on clay soils or cryptogamic soils.

Synonyms

Castilleja scabrida has three synonyms:

Names

The species name scabrida means "rough", referring to the stiff hairs covering the stems and leaves. In English it is also known by the related common name rough paintbrush and is also known as sandstone paintbrush. Additionally, it is sometimes called Eastwood paintbrush, a reference to Alice Eastwood, the botanist who described the species.

Range and habitat

It is native to five western US states, Arizona, Colorado, New Mexico, Nevada, and Utah. It is only rarely found in Apache County, Arizona and San Juan County, New Mexico. It is much more commonly encountered in Utah and southwestern Colorado. It grows at elevations from 1,200 to 2,800 meters (3,900 to 9,200 ft).

Usually found on slopes and rock outcrops in open pinyon-juniper woodlands.

See also

• List of Castilleja species

Citations

1. ^ POWO 2024a.
2. ^ POWO 2024b.
3. ^ POWO 2024c.
4. ^ Egger et al. 2020a.
5. ^ Cronquist et al. 1984, p. 490.
6. ^ Welsh et al. 1987, p. 571.
7. ^ Heil et al. 2013, p. 693.
8. WFO 2024.
9. Eastwood 1902, p. 523.
10. ^ Egger et al. 2020b.
11. ^ Egger et al. 2020c.

References

Books

• Cronquist, Arthur; Holmgren, Arthur H.; Holmgren, Noel H.; Reveal, James L.; Holmgren, Patricia K. (1984). Intermountain Flora : Vascular Plants of the Intermountain West, U.S.A.. Vol. 4. Subclass Asteridae (except Asteraceae) (First ed.). Bronx, New York: New York Botanical Garden. pp. 488–490. ISBN 978-0-231-04120-1. OCLC 320442. Retrieved 12 December 2024.
• Heil, Kenneth D.; O'Kane, Steve L. Jr.; Reeves, Linda Mary; Clifford, Arnold (2013). Flora of the Four Corners Region: Vascular Plants of the San Juan River Drainage, Arizona, Colorado, New Mexico, and Utah (First ed.). St. Louis, Missouri: Missouri Botanical Garden. p. 693. ISBN 978-1-930723-84-9. ISSN 0161-1542. LCCN 2012949654. OCLC 859541992. Retrieved 12 December 2024.
• Welsh, Stanley L.; Atwood, N. Duane; Goodrich, Sherel; Higgins, Larry C. (1987). A Utah Flora. Great Basin Naturalist Memoirs, No. 9 (First ed.). Provo, Utah: Brigham Young University. p. 571. JSTOR 23377658. OCLC 9986953694. Retrieved 12 December 2024.

Journals

• Eastwood, Alice (1902). "New Western Plants". Bulletin of the Torrey Botanical Club. 29 (8): 523. doi:10.2307/2478873. ISSN 0040-9618. Retrieved 12 December 2024.

Websites

• Egger, J. Mark; Zika, Peter F.; Wilson, Barbara L.; Brainerd, Richard E.; Otting, Nick (29 July 2020). "Castilleja scabrida". Flora of North America. ISBN 978-0190868512. OCLC 1101573420. Archived from the original on 7 March 2021. Retrieved 6 December 2024.
• Egger, J. Mark; Zika, Peter F.; Wilson, Barbara L.; Brainerd, Richard E.; Otting, Nick (29 July 2020). "Castilleja scabrida var. barnebyana". Flora of North America. p. 655. ISBN 978-0190868512. OCLC 1101573420. Archived from the original on 7 March 2021. Retrieved 6 December 2024.
• Egger, J. Mark; Zika, Peter F.; Wilson, Barbara L.; Brainerd, Richard E.; Otting, Nick (29 July 2020). "Castilleja scabrida var. scabrida". Flora of North America. p. 654. ISBN 978-0190868512. OCLC 1101573420. Archived from the original on 7 March 2021. Retrieved 6 December 2024.
• "Castilleja scabrida Eastw". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 6 December 2024.
• "Castilleja scabrida var. barnebyana (Eastw.) N.H.Holmgren". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 6 December 2024.
• "Castilleja scabrida var. scabrida". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 6 December 2024.
• "Castilleja scabrida Eastw". World Flora Online. Retrieved 6 December 2024.