| Blennosperma bakeri | |
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| Species: | B. bakeri |
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| Blennosperma bakeri Heiser | |
Blennosperma bakeri is a rare species of flowering plant in the daisy family known by the common names Baker's stickyseed and Sonoma sunshine.
It is endemic to Sonoma County, California, where it is known from a few remaining vernal pool sites on the wet grasslands of the Laguna de Santa Rosa and Sonoma Valley. It is a federally listed endangered species. It is found alongside other rare vernal pool plants including the Sebastopol meadowfoam, Limnanthes vinculans , and Burke's goldfields, Lasthenia burkei . Threats to its survival include the alteration of its habitat for development, road maintenance, grazing, and agriculture, as well as collecting, herbivory by thrips, and invasive plants. [1]
This is a small annual herb under 30 centimeters tall. The leaves are 5 to 15 centimeters long and linear in shape with lobes near the ends. The inflorescence bears a few flower heads. Each head contains a center of yellow disc florets, some of which bear prominent white stigmas and white pollen. Around the edge of the head is a fringe of yellow ray florets with red stigmas. The fruit is an achene a few millimeters long which becomes sticky when wet.
The plant is known from fifteen occurrences, but six of these may be degraded or destroyed. [2] Several artificial vernal pools have been created to increase the numbers of the plant, but the United States Fish and Wildlife Service does not consider these an adequate replacement for natural pools. [3]
Vernal pools, also called vernal ponds or ephemeral pools, are seasonal pools of water that provide habitat for distinctive plants and animals. They are considered to be a distinctive type of wetland usually devoid of fish, and thus allow the safe development of natal amphibian and insect species unable to withstand competition or predation by fish. Certain tropical fish lineages have however adapted to this habitat specifically.
Limnanthes douglasii is a species of annual flowering plant in the family Limnanthaceae (meadowfoam) commonly known as Douglas' meadowfoam or poached egg plant. It is native to California and Oregon, where it grows in wet, grassy habitat, such as vernal pools and spring meadows. It can grow in poorly drained clay soils. The plant was collected by the Scottish explorer and botanist David Douglas, who worked on the west coast of America in the 1820s.
The Petaluma River is a river in the California counties of Sonoma and Marin that becomes a tidal slough for the majority of its length. The headwaters are in the area southwest of Cotati. The flow is generally southward through Petaluma's old town, where the waterway becomes navigable, and then flows another 10 mi (16 km) through tidal marshes before emptying into the northwest corner of San Pablo Bay.
Limnanthes alba is a species of flowering plant in the meadowfoam family known by the common name white meadowfoam. It is native to California and Oregon, where it grows in wet grassy habitat, such as vernal pools and moist spots in woodlands. It generally grows in poorly drained soils. It is an annual herb producing an erect or decumbent stem up to about 30 centimeters long. The leaves divided into several lobed or unlobed leaflets. The flower is cup-shaped with white petals 1 to 1.5 centimeters long.
Limnanthes, the type genus of the family Limnanthaceae, consists of annual herbaceous plants commonly known as the meadowfoams. The seven species are all native to coastal and adjoining regions of western North America, where they typically grow in marshy habitats, such as the margins of vernal pools. Some are endemic to California
Limnanthes vinculans, the Sebastopol meadowfoam, is an endangered species of meadowfoam found only in the Laguna de Santa Rosa in Sonoma County, California, United States and an area slightly to the south in the Americano Creek and Washoe Creek watersheds. The name vinculans derives from the Latin root vinculum, meaning "a bond, a cord." The specific epithet vinculans means linking or bonding, in reference to the sharing of some characters of L. vinculans with L. douglasii (R.Br) and L. bakeri.
Lasthenia, commonly known as goldfields, is a genus of the botanical family Asteraceae. The genus is named after Lasthenia of Mantinea, a cross-dressing female pupil of the ancient Greek philosopher Plato.
Lasthenia conjugens, commonly known as Contra Costa goldfields, is an endangered species of wildflower endemic to a limited range within the San Francisco Bay Area of the state of California, USA. Specifically this rare species occurs in Napa, Santa Barbara, Solano, Contra Costa, Santa Clara, Monterey and Alameda Counties. This annual herb typically flowers from March through June, and its colonies grow in vernal pool habitats at elevations not exceeding 100 meters above sea level. The Jepson Manual notes that the present distribution is limited to the deltaic Sacramento Valley, principally Napa and Solano Counties, but the historic range of L. conjugens is known to be significantly wider. In any case, historically the range has included parts of the North Coast, Sacramento Valley, and San Francisco Bay Area as well as the South Coast. Alternatively and less frequently this taxon has been referred to as Baeria fremontii var. conjugens.
Lasthenia burkei is a rare species of flowering plant in the daisy family known by the common names Burke's goldfields and Burke's baeria.
Lasthenia chrysantha is a species of flowering plant in the daisy family known by the common name alkalisink goldfields. It is endemic to the California Central Valley, where it grows in vernal pools and alkali flats.
Lasthenia coronaria is a species of flowering plant in the daisy family known by the common name royal goldfields. It is native to California and Baja California, including Guadalupe Island.
Lasthenia ferrisiae is a species of flowering plant in the daisy family known by the common name Ferris' goldfields. It is endemic to the California Central Valley, where it grows in vernal pools and alkali flats.
Lasthenia fremontii is a species of flowering plant in the daisy family known by the common name Frémont's goldfields. It is endemic to the California Central Valley, where it grows in vernal pools and meadows.
Lasthenia glaberrima is a species of flowering plant in the daisy family known by the common names smooth goldfields and rayless goldfields. It is native to western North America from British Columbia to California, where it grows in wet places such as vernal pools and springtime meadows.
Lasthenia glabrata is a North American species of flowering plant in the daisy family known by the common names yellowray goldfields and yellow-rayed lasthenia. It is endemic to California, where it is a resident of vernal pools and other moist areas in a number of habitat types. It is widespread across much of the state, from San Diego County to Tehama County.
Lasthenia platycarpha is a species of flowering plant in the daisy family known by the common name alkali goldfields. It is endemic to California, where it is known mainly from the Central Valley.
Limnanthes bakeri is a rare species of meadowfoam known by the common name Baker's meadowfoam. It is endemic to Mendocino County, California, where it is known from only about 20 occurrences in the vicinity of Willits. It is a plant of wet, grassy habitat such as vernal pools and marshy spring meadows.
Limnanthes striata was formerly a species of meadowfoam known by the common name foothill meadowfoam. It has recently been subsumed into the species Limnanthes douglasii in both the Jepson Manual and the Flora of North America. This plant is endemic to California, where it is known from the Sierra Nevada foothills and the southern Klamath Mountains. It grows in wet, grassy habitat, carpeting the edges of vernal pools and ephemeral creeks.
Lomatium cookii is a rare species of flowering plant in the carrot family known by the common names Cook's lomatium and agate desertparsley. It is endemic to Oregon in the United States, where it grows in only two valleys. It is a federally listed endangered species.
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