Stephanomeria

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Stephanomeria
Stephanomeria virgata.jpg
Stephanomeria virgata
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Subfamily: Cichorioideae
Tribe: Cichorieae
Subtribe: Microseridinae
Genus: Stephanomeria
Nutt.
Type species
Stephanomeria minor [1]
(syn of S. tenuifolia) [2]
Synonyms [3]
  • HemiptiliumA.Gray
  • PtiloriaRaf.

Stephanomeria is a genus of North American plants also known as wirelettuce, [4] belonging to the tribe Cichorieae within the family Asteraceae. [5] [6]

Stephanomeria species are used as food plants by the larvae of some Lepidoptera species including Schinia scarletina , which feeds exclusively on the genus.

Annual species [3] [7] [8]
Perennial species [3] [7] [10]
formerly included

see Chaetadelpha Microseris Munzothamnus Pleiacanthus Prenanthella

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<i>Stephanomeria malheurensis</i>

Stephanomeria malheurensis, the Malheur wirelettuce, is a species of flowering plant in the family Asteraceae. It is endemic to Oregon in the United States. It is a federally listed endangered species.

<i>Stephanomeria exigua</i>

Stephanomeria exigua, the small wirelettuce, is a perennial or biennial plant native to the western United States. It is thought to be the parent species of Stephanomeria malheurensis, an endangered plant species found only in southern Oregon. It generally blooms from mid-spring to late summer and produces small, light pink or light purple blooms.

<i>Stephanomeria virgata</i>

Stephanomeria virgata, commonly called rod wirelettuce, twiggy wreath plant, and virgate wirelettuce, is a herbaceous annual plant of the family Asteraceae. It can be found growing in Western North America, specifically California, but also in Oregon and Nevada and northern Mexico. This plant can be found in dry, open habitat types at elevations below 2100 meters. S. virgata is sometimes used as an ornamental plant.

<i>Stephanomeria diegensis</i>

Stephanomeria diegensis is a species of flowering plant in the family Asteraceae known by the common name San Diego wirelettuce. It is native to the coastal hills and ranges of southern California and Baja California, where it grows in many types of open habitat. It evolved as a hybrid of Stephanomeria exigua and S. virgata. Furthermore, it is thought to be the result of homoploid hybrid speciation, which is uncommon. The plant is frequently misidentified as one of its parents, especially if older taxonomic keys are used. This is an erect annual herb easily exceeding two meters in height. Its slender stem has many spreading branches. The basal leaves are linear to lance-shaped and up to 10 centimeters long. The leaves wither early and are absent for most of the year, giving the plant a twiglike appearance. Leaves on the upper stem are small and reduced. The inflorescences are usually clusters of flower heads located at intervals on the stiff branches. Each head has a cylindrical base lined with phyllaries. These are often glandular. The head contains several ray florets, each with an elongated tube and a white or pink-tinged ligule measuring around a centimeter long. The fruit is a grooved achene tipped with a spreading cluster of long, plumelike pappus bristles.

<i>Ambrosia salsola</i> Species of flowering plant

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References

  1. ↑ Tropicos, Stephanomeria Nutt.
  2. ↑ Flann, C (ed) 2009+ Global Compositae Checklist, Stephanomeria minor (Hook.) Nutt.
  3. 1 2 3 Flann, C (ed) 2009+ Global Compositae Checklist Stephanomeria
  4. ↑ USDA, NRCS (n.d.). "Stephanomeria". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 2 December 2015.
  5. ↑ Nuttall, Thomas. 1841. Transactions of the American Philosophical Society, new series 7: 427–428 in English
  6. ↑ Lee, J., Baldwin, B., and Gottlieb, L.D.; Phylogeny of Stephanomeria and related genera (compositae-lactuceae) bed on analysis of 18S-26S nuclear rDNA ITS and ETS sequences; American Journal of Botany. 2002; 89:160-168
  7. 1 2 Biota of North America Program 2013 county distribution maps
  8. ↑ CONABIO. 2009. Catálogo taxonómico de especies de México. 1. In Capital Nat. México. CONABIO, México D.F.
  9. ↑ Gallez G.P.L.D., Gottlieb 1982 Genetic evidence for the hybrid origin of the diploid plant Stephanomeria diegensis. Evolution 36: 1158-1167
  10. ↑ CONABIO. 2009. Catálogo taxonómico de especies de México.


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