Thymophylla pentachaeta

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Thymophylla pentachaeta
Dyssodia pentachaeta 2.jpg
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Tribe: Tageteae
Genus: Thymophylla
Species:T. pentachaeta
Binomial name
Thymophylla pentachaeta
(DC.) Small
Synonyms

Thymophylla pentachaeta, also known as fiveneedle pricklyleaf, [1] golden dyssodia or dogweed, is a perennial or subshrub in the Asteraceae family. The species is native to the southwestern United States and Mexico.

Asteraceae family of plants

Asteraceae or Compositae is a very large and widespread family of flowering plants (Angiospermae).

United States federal republic in North America

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.

Mexico country in the southern portion of North America

Mexico, officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatemala, Belize, and the Caribbean Sea; and to the east by the Gulf of Mexico. Covering almost 2,000,000 square kilometres (770,000 sq mi), the nation is the fifth largest country in the Americas by total area and the 13th largest independent state in the world. With an estimated population of over 120 million people, the country is the eleventh most populous state and the most populous Spanish-speaking state in the world, while being the second most populous nation in Latin America after Brazil. Mexico is a federation comprising 31 states and Mexico City, a special federal entity that is also the capital city and its most populous city. Other metropolises in the state include Guadalajara, Monterrey, Puebla, Toluca, Tijuana and León.

Four varieties are recognised:

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<i>Adenophyllum cooperi</i> species of plant

Adenophyllum cooperi, is a North American species of perennial flowering plants in the sunflower family. It is, native to the Mojave Desert in the southwestern United States, in the States of California, Arizona, Nevada, and Utah.

Pentachaeta is a genus of the Asteraceae family; the entire genus is endemic to California. Of the six species members, at least one, Pentachaeta bellidiflora, is classified as an endangered species. The etymology of the genus name derives from Greek: Penta = five + chaeta = bristle, referring to the pappus scales of P. aurea. It was combined in Chaetopappa, but later work led to the genus being recognized as definitely separate. It is most closely related to Rigiopappus and Tracyina. Pygmydaisy is a common name for Pentachaeta.

Pentachaeta bellidiflora, the white-rayed pentachaeta or whiteray pygmydaisy, is a Californian wildflower in the genus Pentachaeta of the (Asteraceae) family. It is included in both the state and federal lists of endangered species.

<i>Thymophylla</i> genus of plants

Thymophylla is a genus of perennial flowering plants in the marigold tribe within the sunflower family. Pricklyleaf is a common name for plants in this genus.

Dogweed is a common name for several plants formerly included in the genus Dyssodia. Plants referred to as dogweed include species in the genera:

<i>Dyssodia</i> genus of plants

Dyssodia Cav. is a small genus of flowering plants in the daisy family. Most dyssodias are now treated as members of other related genera, including Thymophylla or Adenophyllum, with Dyssodia as genus synonym. Dyssodia papposa is usually retained in this genus. The name is derived from the Greek δυσοδια (dusodia), meaning "ill-smelling".

Layia pentachaeta is a species of flowering plant in the daisy family known by the common name Sierra tidytips, or Sierra layia.

<i>Pentachaeta lyonii</i> species of plant

Pentachaeta lyonii, the Lyon's pentachaeta or Lyon's pygmydaisy, is an annual plant in the aster family. It is endemic to southern California, where it is now known only from a few areas on the heavily developed coastline of Los Angeles and Ventura Counties. This is a federally listed endangered species.

<i>Thymophylla tenuiloba</i> species of plant

Thymophylla tenuiloba, also known as the bristleleaf pricklyleaf, Dahlberg daisy, small bristleleaf pricklyleaf, golden fleece, or shooting star, is a bushy, multi-branched flowering annual from the family Asteraceae. Native to south central Texas and northern Mexico, it produces a large number of small, yellow flowers and demonstrates a trailing habit. It is tolerant of heat and dry conditions and is sometimes sold as a summertime annual plant in areas beyond its native range.

<i>Pentachaeta aurea</i> species of plant

Pentachaeta aurea is a species of flowering plant in the aster family known by the common names golden-rayed pentachaeta, golden chaetopappa, and golden leastdaisy. It is native to southern California, where it grows in the San Gabriel and San Bernardino Mountains and the Peninsular Ranges, and northern Baja California. It is an annual herb with a hairy stem reaching a maximum height near 36 centimeters from a slender taproot. The narrow linear leaves are up to 5 centimeters long but only a few millimeters wide and may be very hairy. The inflorescence is a solitary flower head, with up to 22 heads per plant. The flower head bears many yellow, brownish, or whitish ray florets 3 to 12 millimeters long, and has a center of many five-lobed yellow to reddish disc florets. The fruit is an achene tipped with a pappus of bristles.

Pentachaeta exilis is a species of flowering plant in the aster family known by the common name meager pygmydaisy. It is endemic to California, where it is known from the North Coast Ranges to the southern Central Valley, San Joaquin Valley, and Sierra Nevada foothills. It is a member of grassland and woodland plant communities.

Pentachaeta alsinoides, the tiny pygmydaisy, is a species of flowering plant in the aster family endemic to California. It is an annual, low, slender, diffuse, somewhat villous; leaves filiform or nearly so; disk flowers reddish, ray flowers inconspicuous.

Adenophyllum wrightii is a North American species of flowering plants in the daisy family known by the common names San Felipe dogweed, San Felipe dyssodia and Wright's dogweed. It is native to Mexico and the US States of Arizona and New Mexico. The species was long thought to be extinct in New Mexico, but live populations were rediscovered in the state in 1999.

References

  1. "Thymophylla pentachaeta". Natural Resources Conservation Service PLANTS Database. USDA . Retrieved 10 December 2015.
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