Madia radiata | |
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Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Asterids |
Order: | Asterales |
Family: | Asteraceae |
Genus: | Madia |
Species: | M. radiata |
Binomial name | |
Madia radiata | |
Madia radiata is a species of flowering plant in the family Asteraceae known by the common names golden madia and showy madia. It is endemic to California, where it is known mostly from the Central Coast Ranges and adjacent edges of the San Francisco Bay Area and Central Valley.
Madia radiata is an annual herb growing upright 10 to 90 centimeters tall, the stem often branching and coated in bulbous resin glands. The bristly, glandular leaves are up to 10 centimeters long, often wider at the top of the plant than below. The inflorescence produces flower heads lined with hairy, gland-studded phyllaries. The head has golden yellow ray florets up to almost 2 centimeters long and a center filled with many disc florets. The fruit is a black achene a few millimeters long with no pappus.
The Madia radiata current distribution and status is uncertain; most of the known occurrences were observed decades ago and have not been confirmed since, and many have likely been extirpated. [1]
Ericameria bloomeri, known by the common names Bloomer's rabbitbush and Bloomer's goldenbush, is a species of flowering shrub in the family Asteraceae. This plant is native to the mountains of western North America from British Columbia to California, including Washington, Oregon, Idaho, and Nevada. It may have been extirpated from Canada.
Ericameria cuneata is a species of flowering shrub in the family Asteraceae known by the common name cliff goldenbush. This plant is native to the southwestern United States and northwestern Mexico.
Calycadenia villosa is an uncommon species of flowering plant in the family Asteraceae known by the common name dwarf western rosinweed. It is endemic to central California, where it is known from a limited distribution in the Central Coast Ranges in Monterey County and San Luis Obispo County, with a few populations in Santa Barbara and western Fresno Counties. There are perhaps 16 occurrences.
Lessingia germanorum is a rare species of flowering plant in the family Asteraceae known by the common name San Francisco lessingia. It is endemic to California, where it is known from four populations in the Presidio of San Francisco and one occurrence on San Bruno Mountain south of San Francisco. It is a state and federally listed endangered species. The already rare plant is endangered by many processes, including invasive species, development, sand mining, off-road vehicles and bulldozers, habitat fragmentation, trampling, and pollution, as well as stochastic events.
Lessingia glandulifera is a species of flowering plant in the family Asteraceae known by the common name valley lessingia. It is native to California and Baja California, where it grows in several types of habitat, from forest and desert to the coastline. This is an annual herb varying in maximum size from under 10 to nearly 80 centimeters in height, growing erect to decumbent. It is hairless to very hairy and glandular. The leaves are widely lance-shaped and toothed, the lowest approaching 11 centimeters in maximum length. The upper leaves are often studded with knobby glands. The flower heads appear singly at the tips of the stem branches. Each head is lined with phyllaries covered in large glands and sometimes many hairs. The head is discoid, containing no ray florets but many funnel-shaped disc florets with lobes that resemble ray florets. The disc florets are yellow with brown throats. The fruit is an achene with a whitish pappus.
Madia anomala is a species of flowering plant in the family Asteraceae known by the common name plumpseeded madia. It is endemic to northern California, where it can be found on hillsides in the San Francisco Bay Area and adjacent mountains and valleys.
Kyhosia is a monotypic genus of flowering plants in the family Asteraceae containing the single species Kyhosia bolanderi, which is known by the common names Bolander's madia and kyhosia.
Harmonia doris-nilesiae is a species of flowering plant in the family Asteraceae known by the common names serpentine tarweed and Niles' madia.
Madia exigua is a species of flowering plant in the family Asteraceae known by the common names small tarweed and threadstem madia.
Madia glomerata is a species of flowering plant in the family Asteraceae known by the common name mountain tarweed.
Madia gracilis is a species of flowering plant in the family Asteraceae known by the common names grassy tarweed, slender tarweed, and gumweed madia.
Harmonia hallii is a species of flowering plant in the family Asteraceae known by the common names Hall's harmonia and Hall's madia.
Anisocarpus madioides is a North American species of flowering plant in the family Asteraceae known by the common name woodland madia.
Harmonia nutans is a species of flowering plant in the family Asteraceae known by the common name nodding madia.
Jensia rammii is a species of flowering plant in the family Asteraceae known by the common name Ramm's madia. It is endemic to California, where it is limited to the northern slopes of the Sierra Nevada and its foothills.
Madia sativa, known by the common names coast tarweed and Chilean tarweed, is a species of flowering plant in the family Asteraceae found in parts of western North and South America.
Pseudobahia bahiifolia is a rare species of flowering plant in the family Asteraceae known by the common name Hartweg's golden sunburst.
Packera clevelandii is an uncommon species of flowering plant in the aster family known by the common name Cleveland's ragwort. It is endemic to California, where it is known from only two small regions, a section of the North Coast Ranges around Napa County and a part of the Sierra Nevada foothills on the opposite side of the Sacramento Valley. The plant grows in shrubby chaparral, often on serpentine soils.
Packera ganderi is a rare species of flowering plant in the aster family known by the common name Gander's ragwort. It is endemic to southern California, where it is known from a few occurrences in San Diego and Riverside Counties.
Deinandra conjugens is a rare species of flowering plant in the family Asteraceae known by the common names Otay tarplant and Otay tarweed. It is native to a small section of far northern Baja California in Mexico, its range extending north into San Diego County, California, in the United States. One isolated population has been reported from the hills east of Cayucos in San Luis Obispo County.