John Lance Strother

Oblivia is a genus of flowering plant in the tribe Heliantheae within the family Asteraceae. Species Oblivia ceronii H.Rob. - Perú, Ecuador Oblivia mikanioides (Britt.) Strother - Bolivia, Perú, Ecuador, Colombia, Panamá, Venezuela Oblivia simplex (V.M.Badillo) H.Rob. - Venezuela

Wamalchitamia is a genus of Mesoamerican flowering plants in the family Asteraceae. Species Wamalchitamia appressipila (S.F.Blake) Strother - Chiapas Wamalchitamia aurantiaca (Klatt) Strother - Chiapas, Oaxaca, Guatemala, Honduras, Nicaragua, Costa Rica Wamalchitamia dionysi Strother - Chiapas Wamalchitamia strigosa (DC.) Strother - Chiapas, Oaxaca Wamalchitamia williamsii (Standl. & Steyerm.) Strother - Honduras, Nicaragua

Jefea is a genus of North American flowering plants in the family Asteraceae, native to Mexico and the southwestern United States. These are shrubs up to 200 cm (80 inches) tall, with yellow or orange flower heads containing both ray and disc flowers. Species Jefea brevifolia (A.Gray) Strother - Chihuahua, Coahuila, Nuevo León, Zacatecas, San Luis Potosí, Texas, New Mexico Jefea gnaphalioides (A.Gray) Strother - Tamaulipas, Nuevo León Jefea lantanifolia (S.Schauer) Strother - Tamaulipas, Nuevo León, Querétaro, San Luis Potosí, Hidalgo Jefea pringlei (Greenm.) Strother - Oaxaca, Puebla

Elaphandra is a genus of flowering plants in the family Asteraceae. species The genus is primarily native to South America, with one species extending into Trinidad and Tobago and another into Panama.

Zyzyxia is a genus of tropical shrubs in the family Asteraceae native to Central America. There is only one known species, Zyzyxia lundellii.

Potentilla cristae is a rare species of cinquefoil known by the common name crested cinquefoil. It is endemic to the Klamath Mountains of far northern California, where it is known from a few occurrences in the subalpine and alpine climates of the high mountain ridges. It grows in talus and moist rocky or gravelly serpentine soils. This is a low, matted plant producing a clump of hairy, glandular herbage up to about 20 centimeters tall. Each hairy leaf is divided into three rounded leaflets which are toothed or lobed and measure up to 2 centimeters in length. The inflorescence is a cyme of a

Iogeton is a monotypic genus of flowering plants in the family Asteraceae. It only contains one known species, Iogeton nowickeanus, known only from San Blas Province in Panama. The genus name of Iogeton is in reference to the Greek mythology character of Io (a goddess associated with rivers) and -geton (the Greek word meaning neighbour) and which is because the plant is found near streams.

Boeberoides is a monotypic genus of flowering plants in the family Asteraceae. It contains only one known species, Boeberoides grandiflora. It is endemic to Mexico (states of Guerrero, Morelos, México).

Ambrosia salsola, commonly called cheesebush, winged ragweed, burrobush, white burrobrush, and desert pearl, is a species of perennial shrub in the family Asteraceae native to deserts of the southwestern United States and northwestern Mexico. This species, notable for its foul smell, easily hybridizes with the white bur-sage (Ambrosia dumosa).

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Tetradymia tetrameres is a species of flowering plant in the aster family known by the common name fourpart horsebrush and dune horsebrush. It is native to the Great Basin, where it occurs in western Nevada and just over the border in Mono County, California. It is a plant of dry scrub and sand dunes. It is a bushy, woolly shrub with many erect, spineless branches. It is the largest of the horsebrushes, growing up to two meters in height. The soft, woolly leaves are narrow and threadlike, growing up to 4 centimeters long. Shorter leaves occur in clusters around the primary leaves. The

Jefea brevifolia, the shortleaf jefea, is a North American species of flowering plants in the family Asteraceae. It is native to northern Mexico, and the southwestern and south-central United States, in Chihuahua, Coahuila, Durango, Nuevo León, Zacatecas, San Luis Potosí, Texas, and New Mexico Jefea brevifolia is a small branching shrub, woody at the base but producing long flower stalks. Each stalk has one flower head at the top, each head containing 3-20 ray flowers and 30-100 disc flowers.

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Damnxanthodium is a monotypic genus of flowering plants in the family Asteraceae, containing the single species Damnxanthodium calvum. It is native to northern Mexico. The plant was separated from the genus Perymenium. It was given the new genus name Damnxanthodium because it is difficult to distinguish from similar asters.

Ambrosia monogyra is a species of flowering plant in the sunflower family commonly known as the singlewhorl burrobrush, leafy burrobush, slender burrobush, and desert fragrance. Ambrosia monogyra is native to North America and is typically found in canyons, desert washes, and ravines throughout arid parts of the southwestern United States and northern Mexico. This species has green, threadlike leaves that emit a distinctive odor when crushed, and flowers from August to November. The fruits have distinctive wings in their middle that aid in dispersion through wind and water.

Adenophyllum porophylloides is a species of flowering plant in the family Asteraceae known by the common names San Felipe dogweed and San Felipe dyssodia. It is native to the Sonoran and Mojave Deserts of the southwestern United States (Arizona, California, Nevada) and northwestern Mexico (Sonora, Baja California, Baja California Sur). It grows in alluvial fans, rocky slopes, open scrub and woodlands. Adenophyllum porophylloides is an aromatic desert subshrub with several branching stems reaching a maximum height near 60 centimeters. The sparse, clawlike leaves are divided into sharply

Adenophyllum cooperi (Cooper's dyssodia, Cooper's glandweed), is a species of flowering plant in the family Asteraceae. It is native to the Mojave Desert in the southwestern United States, in the States of California, Arizona, Nevada, and Utah.

Tuxtla is a genus of Mesoamerican flowering plants, in the family Asteraceae. Species There is only one known species, Tuxtla pittieri, native to Costa Rica and to the Los Tuxtlas region in the State of Veracruz in eastern Mexico.

Thymophylla tephroleuca (formerly Dyssodia tephroleuca) is a rare species of flowering plant known by the common names ashy pricklyleaf and ashy dogweed. It is endemic to Texas in the United States, where it occurs in two counties near the Mexican border. It became rare due to the destruction and degradation of its habitat. It is a federally listed endangered species of the United States.

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Hedosyne is a genus of plants in the family Asteraceae. There is only one known species, Hedosyne ambrosiifolia, native to the southwestern United States and northern Mexico: Chihuahua, Coahuila, Durango, Nuevo León, San Luis Potosí, Sonora, Zacatecas, New Mexico, western Texas, southern Arizona. The species is sometimes referred to by the common name ragged marsh-elder.

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Dicoria argentea is a Mexican species flowering plant in the family Asteraceae. It has been found only in the State of Sonora, on coastal sand dunes south of the City of Guaymas, including on Isla Lobos and Isla Huivulai in the Gulf of California. Dicoria argentea is a sprawling subshrub up to 20 cm (8 inches) tall, forming colonies up to 3 meters (10 feet) in diameter. Flower heads are sometimes borne one at a time, other times in clumps of 2 or 3, with male and female flower parts in separate disc florets in the same head. Female florets have no corollas; male florets have yellow corollas.

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