Cleomella arborea
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Brassicales
Family: Cleomaceae
Genus: Cleomella
Species:
C. arborea
Binomial name
Cleomella arborea
(Nutt.) Roalson & J.C.Hall (2015)
Varieties[1]
  • Cleomella arborea var. angustata (Parish) J.C.Hall & Roalson
  • Cleomella arborea var. arborea
  • Cleomella arborea var. globosa (Coville) J.C.Hall & Roalson
Synonyms[1]
  • Cleome isomeris Greene (1888)
  • Isomeris arborea Nutt. (1838)
  • Peritoma arborea (Nutt.) Iltis (2007)

Cleomella arborea[2][3][4] (synonyms Peritoma arborea, Cleome isomeris, and Isomeris arborea[5]), is a perennial shrub or bush in the spiderflower family (Cleomaceae) known by the common names bladderpod, bladderpod spiderflower and burro-fat.[6][7][8][9] It has yellow flowers in bloom all months of the year.[8] It emits a foul odor to discourage herbivory from insects.[8]

Range and habitat

Cleomella arborea is commonly found along roadsides, desert dry washes, and flat areas up to 4,200 feet (1,300 m), in the western Mojave Desert and Colorado Desert to Baja California Peninsula.[10][8] It is native to California and Baja California Peninsula where it grows in a variety of habitats usually described as desert or brush.[10]

A typical individual bears flowers and fruit in various stages of development.

Description

It is a densely branching shrub 0.5–2 metres (1 ft 8 in – 6 ft 7 in) high covered with tiny hairs.[6][8] Its stalked leaves are generally composed of three equal leaflets 15–45 millimetres (0.6–1.8 in) long, oval to elliptic in shape and pointed at the tip.[6][8] The plant produces abundant inflorescences at the ends of the stem branches much of the year.[8] The four sepals are fused about halfway from their base. Each flower has four bright yellow 8–14 millimetres (0.3–0.6 in) long petals, six protruding 15–25 millimetres (0.6–1.0 in) stamens with 2–2.5 millimetres (0.1–0.1 in) anthers. The style is 0.9–1.2 millimetres (0.04–0.05 in) or aborts before flowering.[6] The fruit is a leathery prolate spheroid capsule 30–60 millimetres (1.2–2.4 in) long and 10–25 millimetres (0.4–1.0 in) wide on a 10–20 millimetres (0.4–0.8 in) stalk. It is smooth and green when new, aging to light brown.[6]

A typical inflorescence bears a number of flower buds at its tip, open flowers proximal to the buds, and maturing fruits which have shed their flowers below these.

In the previous genus name, "Iso" means "equal", and "meris" means "part", referring to the stamens being of equal length.[11]

References

  1. 1 2 Cleomella arborea (Nutt.) Roalson & J.C.Hall. Plants of the World Online. Retrieved 5 December 2023.
  2. ↑ Patchell, Melanie J.; Roalson, Eric H.; Hall, Jocelyn C. (2014-04-01). "Resolved phylogeny of Cleomaceae based on all three genomes". Taxon. 63 (2): 315–328. doi:10.12705/632.17.
  3. ↑ Roalson, Eric H.; Hall, Jocelyn C.; Riser II, James P.; Cardinal-McTeague, Warren M.; Cochrane, Theodore S.; Sytsma, Kenneth J. (2015-04-21). "A revision of generic boundaries and nomenclature in the North American cleomoid clade (Cleomaceae)". Phytotaxa. 205 (3): 129. doi:10.11646/phytotaxa.205.3.1. ISSN 1179-3163.
  4. ↑ "Cleomella arborea (Nutt.) Roalson & J.C.Hall | Plants of the World Online | Kew Science". Plants of the World Online. Retrieved 2022-10-04.
  5. ↑ Mojave Desert Wildflowers, Pam MacKay, 2nd Ed. 2013, P. 314
  6. 1 2 3 4 5 "Peritoma arborea". in Jepson Flora Project (eds.) Jepson eFlora. Jepson Herbarium; University of California, Berkeley. 2018. Retrieved 2018-07-06.
  7. ↑ USDA, NRCS. (2018). "Cleome isomeris". The PLANTS Database. National Plant Data Team, Greensboro, NC 27401-4901 USA. Retrieved 2018-07-06.
  8. 1 2 3 4 5 6 7 Mojave Desert Wildflowers, Pam MacKay, 2nd Ed. 2013, p. 230
  9. ↑ Flora of North America Editorial Committee, ed. (1993–2018). "Peritoma arborea". Flora of North America North of Mexico. 20+ vols. New York and Oxford. Retrieved 2018-07-18.
  10. 1 2 Sullivan, Steven. K. (2018). "Peritoma arborea". Wildflower Search. Retrieved 2018-07-06.
  11. ↑ Torrey, J. & A. Gray. A flora of North America. 1838 [-1840]. volume 1.page 124.
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