| Tetradymia axillaris | |
|---|---|
 | |
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Tribe: | Senecioneae |
| Genus: | Tetradymia |
| Species: | T. axillaris |
| Binomial name | |
| Tetradymia axillaris A. Nels. | |
Tetradymia axillaris is a flowering plant in the daisy family known by the common names longspine horsebrush [1] and cottonthorn. This is a plant of the sagebrush and desert plant communities of the southwestern United States.
Asteraceae or Compositae is a very large and widespread family of flowering plants (Angiospermae).
The United States of America (USA), commonly known as the United States or America, is a country composed of 50 states, a federal district, five major self-governing territories, and various possessions. At 3.8 million square miles, the United States is the world's third or fourth largest country by total area and is slightly smaller than the entire continent of Europe's 3.9 million square miles. With a population of over 327 million people, the U.S. is the third most populous country. The capital is Washington, D.C., and the largest city by population is New York City. Forty-eight states and the capital's federal district are contiguous in North America between Canada and Mexico. The State of Alaska is in the northwest corner of North America, bordered by Canada to the east and across the Bering Strait from Russia to the west. The State of Hawaii is an archipelago in the mid-Pacific Ocean. The U.S. territories are scattered about the Pacific Ocean and the Caribbean Sea, stretching across nine official time zones. The extremely diverse geography, climate, and wildlife of the United States make it one of the world's 17 megadiverse countries.
The plant forms a sprawling thicket and is very spiny. The green leaves dry and their tissues fall away, leaving the veins as hard, sharp spines. When in foliage the bush has green, hairy stems and bears yellow daisylike flowerheads in the axils, or angles, of the newest branches. The fruits are released in masses of cottony seed.
There are two varieties of the species, var. axillaris and var. longispina. They grow together in some areas and there their characteristics may intergrade. [2]
In botanical nomenclature, variety is a taxonomic rank below that of species and subspecies but above that of form. As such, it gets a three-part infraspecific name. It is sometimes recommended that the subspecies rank should be used to recognize geographic distinctiveness, whereas the variety rank is appropriate if the taxon is seen throughout the geographic range of the species.
The sharp spines were used as tattooing needles by the Kawaiisu Native Americans of California. [3]
A tattoo is a form of body modification where a design is made by inserting ink, dyes and pigments, either indelible or temporary, into the dermis layer of the skin to change the pigment. The art of making tattoos is tattooing.
The Kawaiisu are a Native Californian ethnic group in the United States, which lives in the southern California Tehachapi Valley and across the Tehachapi Pass in the southern Sierra Nevada Mountains to the north, toward Lake Isabella and Walker Pass. Historically, the Kawaiisu also traveled eastward on food-gathering trips to areas in the northern Mojave Desert, to the north and northeast of the Antelope Valley, as far east as the Panamint Valley, the Panamint Mountains, and the western edge of Death Valley. Today, some Kawaiisu people are enrolled in the Tule River Indian Tribe.
California is a state in the Pacific Region of the United States. With 39.6 million residents, California is the most populous U.S. state and the third-largest by area. The state capital is Sacramento. The Greater Los Angeles Area and the San Francisco Bay Area are the nation's second and fifth most populous urban regions, with 18.7 million and 8.8 million residents respectively. Los Angeles is California's most populous city, and the country's second most populous, after New York City. California also has the nation's most populous county, Los Angeles County, and its largest county by area, San Bernardino County. The City and County of San Francisco is both the country's second-most densely populated major city after New York and the fifth-most densely populated county, behind only four of the five New York City boroughs.
