Heteranthemis is a monotypic genus of plants in the daisy family containing the single species Heteranthemis viscidehirta, which is known by the common name oxeye, or sticky oxeye. This plant is native to the Iberian Peninsula and adjacent areas in North Africa, but it can be found in other parts of the world as an introduced species. This is an annual herb growing erect stems 20 to 80 centimeters tall. Its abundant leaves are a few centimeters long, wavy to curly and divided into irregular toothed lobes. The stem and foliage are glandular and produce a sticky exudate. The plants produce bright yellow daisylike flower heads, with bases covered in large green phyllaries. The center of the head is filled with many yellow disc florets and the edge is fringed with toothed yellow ray florets about 2 centimeters long.
Ipomoea triloba is a species of Ipomoea morning glory known by several common names, including littlebell and Aiea morning glory. It is native to the tropical Americas, but it is widespread in warm areas of the world, where it is an introduced species and often a noxious weed. This is a fast-growing, vining, annual herb producing long, thin stems with ivy-like, petioled, heart-shaped leaves 2.5–6 centimetres (0.98–2.36 in) long. The leaves sometimes, but not always, have three lobes. The vines produce tubular bell-shaped flowers, each about two centimeters long. They are quite variable in color, in shades of pink, red or lavender, with or without white markings.
Collinsia corymbosa is a species of flowering plant in the plantain family known by the common name round-headed Chinese houses. It is endemic to the coastline of California north of the San Francisco Bay Area, where it is uncommon and scattered. Its habitat is the sand dunes of the immediate coastline. This is an annual herb producing a scaly, hairy, red to reddish green stem which grows upright or decumbent to a maximum length of about 25 centimeters. The thick, sparsely hairy leaves are rippled and lobed along the edges, which may be somewhat turned under. The inflorescence is a dense whorl of several distinctive flowers. Each has a hairy calyx of lobed reddish sepals and a corolla up to about 2 centimeters long. The flower has two small upper lobes and three longer lower lobes which come together in a nearly tubular shape. It is generally white with a light purple tint. The smaller upper lobes curl back and dry to brown at their lips.
Eriastrum virgatum is a species of flowering plant in the phlox family known by the common name wand woollystar. It is endemic to California, where it is known the coastline and coastal mountain ranges of Monterey and San Benito Counties. It grows in chaparral and coastal and inland scrub habitat. It is an annual herb producing a thin, usually woolly stem up to about 40 centimeters tall. The leaves are narrow and thick, up to 5 centimeters long, and sometimes divided into two narrow lobes. The inflorescence is a woolly cluster of narrow, leaflike bracts laced with webby fibers. The flowers have yellow throats and bright blue corollas with lobes up to a centimeter long.
Saltugilia caruifolia is a species of flowering plant in the phlox family known by the common names carawayleaf gilia and caraway-leaved woodland-gilia. It is native to the Peninsular Ranges of southern California and northern Baja California, where it grows in local habitat types such as chaparral. This herb produces a thin stem 12 centimeters to about a meter long. The leaves are up to 8 centimeters long at the base of the plant and divided into many finely subdivided lobes. The top of the stem branches into an inflorescence dotted with many glands. It produces flowers with lavender lobes dotted with darker purple near the bases.
Leptosiphon ciliatus is a species of flowering plant in the phlox family known by the common name whiskerbrush.
Linanthus concinnus is a species of flowering plant in the phlox family known by the common name San Gabriel linanthus. It is endemic to the San Gabriel Mountains in the Los Angeles area, where it occurs in dry, rocky habitat in chaparral and forest habitat. This is a small annual herb producing a thin, hairy, glandular stem no more than about 12 centimeters tall. The leaves are divided into narrow, threadlike linear lobes up to 1.5 centimeters long. The inflorescence is a cluster of 3 to 7 funnel-shaped flowers. The lobes of the corolla are up to a centimeter long and white with 2 magenta marks at the base of each.
Leptosiphon montanus is a species of flowering plant in the phlox family known by the common name mustang clover.
Diplacus kelloggii is a species of monkeyflower known by the common name Kellogg's monkeyflower. It is native to the mountains and foothills of northern California and southern Oregon, where it grows in bare, disturbed, and shifting substrates, such as recent rockslides and scree.
Navarretia breweri is a species of flowering plant in the phlox family known by the common name Brewer's navarretia. It is native to much of the western United States, where it grows in open habitat types.
Navarretia cotulifolia is a species of flowering plant in the phlox family known by the common name cotulaleaf pincushionplant, or cotula navarretia.
Navarretia heterandra is an uncommon species of flowering plant in the phlox family known by the common name Tehama pincushionplant, or Tehama navarretia.
Navarretia heterodoxa is a species of flowering plant in the phlox family known by the common name Calistoga pincushionplant. It is endemic to the San Francisco Bay Area in California, where it grows in the serpentine soils of the hills and mountains.
Nemacladus interior is a species of flowering plant in the bellflower family known by the common name Sierra threadplant. It is native to the Sierra Nevada of California, and it is known from Oregon as well. It grows in mountain forest habitat. It is an annual herb producing a stiff upright purple-brown stem up to about 25 centimeters tall. Small toothed oval leaves 1 to 2 centimeters long occur at the base of the plant. The inflorescence is a zigzagging series of branches bearing occasional flowers on thin pedicels. There is a single tiny bract at the base of each pedicel. The flower is a few millimeters long. It has five triangular sepals and five corolla lobes, three lobes on the upper lip and two on the lower. The corolla is white to pale purple or pink with a thin red band and yellow spot at the base of each lobe.
Porterella is a monotypic genus of flowering plants in the bellflower family containing the single species Porterella carnosula, which is known by the common name fleshy porterella, or simply porterella.
Packera breweri is a species of flowering plant in the aster family known by the common name Brewer's ragwort. It is endemic to central California, where it occurs in the woodlands and grasslands of the Central Coast Ranges. They are more frequently found in mid-southern counties of California near the coast, such as Kern or Monterey.
Sisymbrium orientale is a species of flowering plant in the family Brassicaceae known by the common names Indian hedgemustard and eastern rocket. It is native to Europe, Asia, and North Africa, and it can be found throughout much of the temperate world as an introduced species and in some areas a common roadside weed. It is an annual herb producing a hairy, branching stem up to about 30 centimeters tall. The basal leaves are divided into deep lobes or toothed leaflets. Leaves higher on the stem have lance-shaped blades with small separate lobes near the base. The top of the stem is occupied by a raceme of flowers with light yellow petals each measuring up to a centimeter long. The fruit is a silique which can be up to 10 centimeters long.
Swertia perennis is a species of flowering plant in the gentian family known by the common names felwort and star swertia. It is native to several regions of the northern hemisphere, including much of Eurasia and western North America. It is a plant of wetlands, particularly calcareous fens. It is common to abundant in many areas, but it is known to be negatively impacted by habitat fragmentation and other habitat destruction, and human activity has led to its extirpation from some areas where it was once common. It is a perennial herb producing usually one erect stem growing 10 to 50 centimeters tall. The basal leaves are spoon-shaped with rounded tips, and leaves higher on the plant are widely lance-shaped or somewhat oval, with pointed tips. The inflorescence is an open panicle of flowers atop the stem. Each flower has a calyx of four or five pointed sepals and a corolla of four or five pointed lobes each up to 1.3 centimeters long. The corolla is dull blue to violet in color with darker purplish veining or stippling. There are two rounded nectary pits at the base of each lobe of the corolla. Stamens tipped with large anthers surround a central ovary.
Glandularia gooddingii is a species of flowering plant in the verbena family known by the common name southwestern mock vervain. It is native to the southwestern United States and northern Mexico, where it occurs in sandy and rocky desert habitat. It is a perennial herb producing several hairy, decumbent to erect stems up to 45 centimeters long. The hairy leaves are generally divided at the base into a few lobes, which are edged with large teeth or small lobes. The plant blooms in large, dense, head-like spikes of many flowers. Each flower has a calyx of hairy sepals and a pale purple-blue corolla up to 1.4 centimeters long.
Veronica cusickii is a species of flowering plant in the plantain family known by the common name Cusick's speedwell. It is native to western North America from British Columbia to Montana to northern California, where it occurs in mountain meadows and forests.
