Castilleja minor

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Castilleja minor
Castilleja minor ssp minor 1.jpg
var. minor
Status TNC G5.svg
Secure  (NatureServe) [2]
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Lamiales
Family: Orobanchaceae
Genus: Castilleja
Species:
C. minor
Binomial name
Castilleja minor
(A.Gray) A.Gray
Varieties [3]
  • Castilleja minor var. exilis (A.Nelson) J.M.Egger
  • Castilleja minor var. minor
  • Castilleja minor var. spiralis (Jeps.) J.M.Egger
  • Castilleja minor var. stenantha (A.Gray) J.M.Egger
Synonyms [3]
  • Castilleja affinis var. minor A.Gray

Castilleja minor is a species of flowering plant in the family Orobanchaceae known as thread-torch paintbrush or seep paintbrush. It is native to western North America from British Columbia to California and eastward to the Rocky Mountain states.

Contents

Description

Castilleja minor is annual plant that typically grows 20–100 centimeters (8–39 in) tall, but occasionally may reach as much as 1.5 meters (4.9 ft). It may have a short taproot or small fibrous root system. [4] The stems are usually without branches and sparsely covered in loose, pilose hairs, ones that are long and straight. Each plant will have either just a few stems or one alone. [5] Sometimes the hairs are shaggy and this characteristic is associated with Castilleja minor var. minor. [4]

The leaves of thread-torch paintbrush vary widely in size, from as short as 2 centimeters or as long as 10 cm, [4] and are just 2–5 millimeters wide near the base. [5] They also vary widely in color from purple to green and may have a little or a significant gray cast. They may be linear, narrow like a blade of grass, or lanceolate, shaped like a spear point with the widest part below the midpoint of the leaf. [4] The leaves have a soft texture and are not divided into lobes. [4] [5]

The inflorescence is narrow, [6] 5–40 centimeters long and just 1–4 cm wide. [4] The flowers are also, long, narrow, and threadlike. [7]

Taxonomy

Castilleja minor was first scientifically described by Asa Gray as a variety of Castilleja affinis as Castilleja affinis var. minor in 1859. In 1876 he published a revision of his previous classification, changing it to a species with its present name. [3]

Castilleja minor has four accepted varieties. [3]

Names

In English it is known by the common names of thread-torch paintbrush, [7] seep paintbrush, [4] or annual paintbrush. [8] In the early 1900s it was also known as small-flowered painted-cup. [9]

References

  1. ↑ Smith, K. (2016). "Castilleja minor". IUCN Red List of Threatened Species . 2016 e.T64310257A67729120. doi: 10.2305/IUCN.UK.2016-1.RLTS.T64310257A67729120.en . Retrieved 1 November 2024.
  2. ↑ NatureServe (2024). "Castilleja minor". Arlington, Virginia. Retrieved 28 September 2024.
  3. 1 2 3 4 "Castilleja minor (A.Gray) A.Gray". Plants of the World Online . Royal Botanic Gardens, Kew . Retrieved 11 August 2024.
  4. 1 2 3 4 5 6 7 Egger, J. Mark; Zika, Peter F.; Wilson, Barbara L.; Brainerd, Richard E.; Otting, Nick (6 November 2020). "Castilleja minor". Flora of North America. Retrieved 11 August 2024.
  5. 1 2 3 Heil, Kenneth D.; O'Kane, Jr., Steve L.; 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. St. Louis, Missouri: Missouri Botanical Garden. pp. 692–693. ISBN   978-1-930723-84-9. ISSN   0161-1542. LCCN   2012949654. OCLC   859541992 . Retrieved 28 September 2024.
  6. ↑ Wetherwax, Margriet; Chuang, T.I.; Heckard, Lawrence R. (2012). "Castilleja minor". Jepson eFlora . University of California, Berkeley. Archived from the original on 17 September 2024. Retrieved 28 September 2024.
  7. 1 2 Niehaus, Theodore F. (1998). A Field Guide to Southwestern and Texas Wildflowers. Boston, Massachusetts: Houghton Mifflin. pp. 250–251. ISBN   978-0-585-36531-2.
  8. ↑ Keator, Glenn; Middlebrook, Alrie (2007). Designing California Native Gardens: The Plant Community Approach to Artful, Ecological Gardens. Berkeley, California: University of California Press. ISBN   978-0-520-23978-4.
  9. ↑ Britton, Nathaniel Lord (1907). Manual of the Flora of the Northern States and Canada. New York: Henry Holt and Company. p. 840. Retrieved 28 September 2024.
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