|
Streptanthus
''Streptanthus'' is a genus of plants within the family Brassicaceae. There are about 35 known species within the genus ''Streptanthus'', distributed mostly throughout western North America. The common names for this genus are twistflower and jewelflower. Twenty-four of the species and eleven lesser taxa occur in California, thirty-two of which are California endemism, endemics; seventeen of these California taxa are classified as rare species, rare plants. Species or subspecies The following are some of the species (or subspecies) of the genus ''Streptanthus'' (county locations are not intended to be exhaustive): *''Streptanthus albidus'', Metcalf Canyon jewelflower **''Streptanthus albidus albidus'', Metcalf Canyon jewelflower (Santa Clara County, California), endangered **''Streptanthus albidus peramoenus'', Uncommon jewelflower, most beautiful jewelflower (Santa Clara County, California) *''Streptanthus barbatus'', Pacific jewelflower *''Streptanthus barbiger'', Bearded jewel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Streptanthus Hispidus
''Streptanthus hispidus'', the Mt. Diablo jewelflower, is a rare species of flowering plant in the mustard family. Distribution It is endemic to Contra Costa County, California, where it is known from fewer than 15 occurrences on and around Mount Diablo. It grows in rocky outcrops in grassland and chaparral habitat. It is threatened by habitat degradation, such as trampling by hikers and destruction during maintenance activities. Description ''Streptanthus hispidus'' is a bristly annual herb growing up to 30 centimeters tall. Flowers occur in a raceme, the uppermost ones often sterile and different in form. The bristly bell-shaped calyx of sepals is greenish brown in the fertile flowers and purple in the sterile. Fertile flowers have four light purple petals up to a centimeter long. The fruit is a bristly silique A silique or siliqua (plural ''siliques'' or ''siliquae'') is a type of fruit (seed capsule) having two fused carpels with the length being more than three times th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Streptanthus Bernardinus
''Streptanthus bernardinus'' is a species of flowering plant in the mustard family known by the common name Laguna Mountains jewelflower, or Laguna Mountain jewelflower. Distribution It is native to southern California and northern Baja California, where it grows in the Transverse Ranges around Los Angeles and the Peninsular Ranges to the south, including the Laguna Mountains east of San Diego and the Sierra de Juarez and Sierra de San Pedro Mártir of Baja. Its habitat includes temperate coniferous forest and chaparral on mountain slopes. Description ''Streptanthus bernardinus'' is a perennial herb growing from a woody caudex and producing an erect stem up to 60 to 80 centimeters tall. It is hairless and sometimes waxy in texture. The basal leaves are widely lance-shaped and up to 8 centimeters long by 2.5 wide. They are borne on petioles. Narrower lance-shaped leaves occur higher on the stem and may clasp the stem at their bases. Flowers occur at intervals along the upper ste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Streptanthus Glandulosus
''Streptanthus glandulosus'' is a species of flowering plant in the mustard family known by the common name bristly jewelflower. It is native to California and southwestern Oregon, where it grows in many types of habitat, including grassland, chaparral, and woodlands. Genetic and other analyses indicate that it is a species complex with ten subspecies which evolved as populations were isolated from each other. The complex includes subspecies previously considered separate species, such as the rare Tiburon jewelflower (ssp. ''niger'') endemic to the San Francisco Bay Area. Plants in the complex are variable. In general they are annual herbs growing 10 centimeters to over a meter in height. They may be hairless to hairy to bristly. The ephemeral basal leaves have blades borne on winged petioles. Leaves higher on the stem are linear to lance-shaped and clasp the stem at their bases. Flowers occur at intervals along the upper stem. Each flower has an urn-shaped calyx of sepals one h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Streptanthus Fenestratus
''Streptanthus fenestratus'' is an uncommon species of flowering plant in the mustard family known by the common name Tehipite Valley jewelflower. Distribution It is endemic to Fresno County, California, where it is known only from the high mountain peaks of the Sierra Nevada in Kings Canyon National Park. It grows in coniferous forests. There are about ten populations. Description ''Streptanthus fenestratus'' is an annual herb producing a hairless, waxy stem up 35 or 40 centimeters in maximum height. The basal leaves have blades divided into several lobes or leaflets. Leaves higher on the stem have oval or lance-shaped blades usually not subdivided. Flowers occur at intervals along the upper stem with one or two leaflike green or purple-tipped bracts at the base of the raceme. Each flower has a tubular urn-shaped calyx of purple sepals just under a centimeter long. Light petals up to 1.5 centimeters long emerge from the tip of the calyx. The fruit is a flat, narrow silique up to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Streptanthus Bracteatus
''Streptanthus bracteatus'' is a species of flowering plant in the mustard family known by the common names bracted jewelflower and bracted twistflower. It is endemic to Texas in the United States.''Streptanthus bracteatus''. Center for Plant Conservation.''Streptanthus bracteatus''. The Nature Conservancy. This annual or biennial herb has a branching stem up to 1.2 meters tall. It is hairless and generally waxy in texture. The basal leaves have lobed or toothed blades on long petioles, and the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Streptanthus Cordatus
''Streptanthus cordatus'' is a species of flowering plant in the mustard family known by the common name heartleaf twistflower. It is native to the western United States, where it can be found in many types of sagebrush, woodland, and forest habitat. It is a perennial herb producing a branched or unbranched stem up to about a meter tall. It is often waxy in texture. The basal leaves are oval or spoon-shaped with bristle-toothed blades borne on rough-haired petioles. Leaves higher on the stem are oval to lance-shaped, up to 9 centimeters long with their bases usually clasping the stem. Flowers occur at intervals along the upper stem. Each has a calyx of sepals roughly a centimeter long which begin greenish yellow and mature purple. Four purple petals emerge from the tip of each calyx. The fruit is a thin, narrow silique A silique or siliqua (plural ''siliques'' or ''siliquae'') is a type of fruit (seed capsule) having two fused carpels with the length being more than three tim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Streptanthus Carinatus
''Streptanthus carinatus'', the lyreleaf jewelflower, is an annual to biennial plant in the mustard family (Brassicaceae) found in the Arizona Upland of the Sonoran Desert The Sonoran Desert ( es, Desierto de Sonora) is a desert in North America and ecoregion that covers the northwestern Mexican states of Sonora, Baja California, and Baja California Sur, as well as part of the southwestern United States (in Arizona ....Sonoran Desert Wildflowers, Richard Spellenberg, 2nd ed., 2012, Subspecies ''S. carinatus arixonicus'' has white to cream colored flowers in its western range, becoming strongly yellow eastward. Subspecies ''S. carinatus carinatus'' has purple flowers. References carinatus Plants described in 1853 {{Brassicales-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Streptanthus Breweri
''Streptanthus breweri'' is a species of flowering plant in the mustard family known by the common name Brewer's jewelflower. It is endemic to California, where it can be found in the coastal mountain ranges from the Klamath Mountains south to the San Francisco Bay Area. Its habitat includes chaparral and woodlands, usually on serpentine soils. It is an annual herb producing an erect, branching stem up to about 80 centimeters in maximum height. It is hairless except for fine hairs on some of the inflorescence parts, and it may be waxy in texture. The basal leaves have oval blades borne on petioles, and the lance-shaped leaves farther up the stem clasp it at their bases. Flowers occur at intervals along the upper stem, sometimes in a zig-zagging, one-sided array. Each has an urn-shaped calyx of keeled greenish or purplish sepals under a centimeter long. White, purple, or purple-veined white petals emerge from the tip. The fruit is a narrow, curved silique which may be 9 to 11 centi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Streptanthus Howellii
''Streptanthus howellii'' is an uncommon species of flowering plant in the mustard family known by the common name Howell's jewelflower. It is endemic to the Klamath Mountains of southern Oregon and northern California. It grows in mountain forests on serpentine soils. It is a perennial herb producing a hairless, often waxy-textured stem up to 70 or 80 centimeters in maximum length. It is generally unbranched. The ephemeral basal leaves have fleshy oval blades with smooth or toothed edges, borne on petioles. Leaves farther up the stem are similar but smaller and narrower, with shorter petioles or none. They do not clasp the stem. Flowers occur at intervals along the upper stem. Each has a calyx of purple sepals under a centimeter long with purple-tipped yellow petals emerging from the tip. The fruit is a thin, smooth, curved silique up to 12 centimeters long. This rare plant is threatened by wildfire suppression; it would be more common if its habitat were allowed its natural fir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Streptanthus Callistus
''Streptanthus callistus'' is a rare species of flowering plant in the mustard family known by the common name Mount Hamilton jewelflower. It is endemic to Santa Clara County, California, where it is known from only about five occurrences around Mount Hamilton. It grows in chaparral and woodlands and on dry scree. It is an annual herb producing a small stem up to 8 or 9 centimeters tall with a bristly base. The toothed oval leaves are under 2 centimeters long. The inflorescence is a cluster-like raceme of flowers, the top ones sterile. The fertile flowers on the lower raceme have calyces of bristly purple-green sepals under a centimeter long with flaring purple petals at the tip. The sterile flowers at the top of the raceme have narrow, elongated, hairless purple sepals. The fruit is a cylindrical, bristle-studded silique A silique or siliqua (plural ''siliques'' or ''siliquae'') is a type of fruit (seed capsule) having two fused carpels with the length being more than three ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Streptanthus Gracilis
''Streptanthus gracilis'' is an uncommon species of flowering plant in the mustard family known by the common name alpine jewelflower. Distribution It is endemic to California, where it is known only from the Kings-Kern Divide in the Sierra Nevada, a series of high mountain peaks near the intersection of Tulare, Fresno, and Inyo Counties. It grows in weathered rocky habitat such as talus. Description ''Streptanthus gracilis'' is an annual herb producing a slender, hairless, waxy stem up to 30 or 35 centimeters tall. The basal leaves have toothed oblong blades borne on petioles. Leaves higher on the stem have shorter blades which may have short petioles or may clasp the stem at their bases. Flowers occur at intervals along the upper stem. Each has an urn-shaped calyx of pink sepals about half a centimeter long with pink petals emerging from the tip. The fruit is a thin, straight or curving silique A silique or siliqua (plural ''siliques'' or ''siliquae'') is a type of fru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Streptanthus Batrachopus
''Streptanthus batrachopus'' is a rare species of flowering plant in the Brassicaceae, mustard family known by the common name Mt. Tamalpais jewelflower. It is Endemism, endemic to Marin County, California, where it is known only from Mount Tamalpais, Mt. Tamalpais and surrounding terrain. There are fewer than ten known occurrences. Its habitat includes chaparral and temperate coniferous forest, coniferous forest, generally on serpentine soils. Description It is an annual herb producing a branching or unbranched stem up to about 20 centimeters in maximum height or slightly taller. Leaves near the base of the stem are oval or lance-shaped with toothed edges, somewhat fleshy in texture with a mottled pattern, and no more than 2 to 3 centimeters long. Leaves farther up the stem are lance-shaped. Flowers occur at intervals along the upper stem. Each has an urn-shaped calyx of purple or greenish sepals up to half a centimeter long. Purple or purple-streaked white petals emerge from t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |