''Artemisia nesiotica'' is a rare

California California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an ...

species of

sagebrush Sagebrush is the common name of several woody and herbaceous species of plants in the genus ''Artemisia (plant), Artemisia''. The best-known sagebrush is the shrub ''Artemisia tridentata''. Sagebrush is native to the western half of North Amer ...

in the daisy family, known by the common name island sagebrush. It is

endemic Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...

to the

Channel Islands of California The Channel Islands () are an eight-island archipelago located within the Southern California Bight in the Pacific Ocean, off the coast of California. They define the Santa Barbara Channel between the islands and the California mainland. The ...

, found on 3 of the 8 islands ( San Nicolas,

San Clemente San Clemente (; Spanish for " St. Clement" ) is a coastal city in southern Orange County, California, United States. It was named in 1925 after the Spanish colonial island (which was named after a Pope from the first century). Located in the O ...

, and

Santa Barbara Island Santa Barbara Island (Spanish language, Spanish: ''Isla de Santa Bárbara''; Tongva language, Tongva: ''Tchunashngna'') is a small island of the Channel Islands of California, Channel Islands archipelago in Southern California. It is protected ...

s).

Description

''Artemisia nesiotica'' is a small

shrub A shrub or bush is a small to medium-sized perennial woody plant. Unlike herbaceous plants, shrubs have persistent woody stems above the ground. Shrubs can be either deciduous or evergreen. They are distinguished from trees by their multiple ...

growing up to about 50 cm (20 inches) tall and generally rounded in shape. It produces several thin, upright stems from a woody base. The foliage is made up of woolly leaves divided into many thin, flat, threadlike segments. The

inflorescence In botany, an inflorescence is a group or cluster of flowers arranged on a plant's Plant stem, stem that is composed of a main branch or a system of branches. An inflorescence is categorized on the basis of the arrangement of flowers on a mai ...

is a narrow cluster of several

flower heads A pseudanthium (; : pseudanthia) is an inflorescence that resembles a flower. The word is sometimes used for other structures that are neither a true flower nor a true inflorescence. Examples of pseudanthia include flower heads, composite flowers ...

. The fruit is a tiny resinous

achene An achene (; ), also sometimes called akene and occasionally achenium or achenocarp, is a type of simple fruit, simple dry fruits, dry fruit produced by many species of flowering plants. Achenes are monocarpellate (formed from one carpel) and Dehi ...

with a pappus of hairs.

Etymology

The earliest name given to the plaint was ''Crossostephium insulare'', coined by

Per Axel Rydberg Per Axel Rydberg (July 6, 1860 – July 25, 1931) was a Swedish-born, American botanist who was the first curator of the New York Botanical Garden Herbarium. Biography Per Axel Rydberg was born in Odh, Västergötland, Sweden and emigrated to ...

in 1916. In 1935, Philip Alexander Munz declared this to be a variety of ''Artemisia californica.''

Peter Raven Peter Hamilton Raven (born June 13, 1936) is an American botanist and environmentalist, notable as the longtime director, now President Emeritus, of the Missouri Botanical Garden. Early life On June 13, 1936, Raven was born in Shanghai, China, ...

later wanted to recognize the

Channel Island The Channel Islands are an archipelago in the English Channel, off the French coast of Normandy. They are divided into two Crown Dependencies: the Bailiwick of Jersey, which is the largest of the islands; and the Bailiwick of Guernsey, consist ...

plants as a distinct species within ''Artemisia,'' but the name ''Artemisia insularis'' had already been used for a

Kuril Islands The Kuril Islands or Kurile Islands are a volcanic archipelago administered as part of Sakhalin Oblast in the Russian Far East. The islands stretch approximately northeast from Hokkaido in Japan to Kamchatka Peninsula in Russia, separating the ...

plant in 1936. Hence Raven's new name, ''Artemisia nesiotica.''Raven, Peter Hamilton 1963. Aliso 5(3): 341

References

External links

Calflora Database: ''Artemisia nesiotica'' (Island sagebrush)Jepson Manual eFlora (TJM2) treatment of ''Artemisia nesiotica''
* {{Taxonbar, from=Q4797497 nesiotica Endemic flora of California Natural history of the Channel Islands of California Natural history of the California chaparral and woodlands Plants described in 1916