John Torrey was an American botanist, chemist, and physician. Throughout much of his career, he was a teacher of chemistry, often at multiple universities, while he also pursued botanical work, focusing on the flora of North America. His most renowned works include studies of the New York flora, the Mexican Boundary, the Pacific railroad surveys, and the uncompleted Flora of North America.
Mertensia is a genus of flowering plants in the family Boraginaceae. They are perennial herbaceous plants with blue or sometimes white flowers that open from pink-tinged buds. Such a change in flower color is common in Boraginaceae and is caused by an increase of pH in the flower tissue. Mertensia is one of several plants that are commonly called "bluebell". In spite of their common name, the flowers are usually salverform (trumpet-shaped) rather than campanulate (bell-shaped).
Sereno Watson was an American botanist. Graduating from Yale in 1847 in Biology, he drifted through various occupations until, in California, he joined the Clarence King Expedition and eventually became its expedition botanist. Appointed by Asa Gray as assistant in the Gray Herbarium of Harvard University in 1873, he later became its curator, a position he maintained until his death. Watson was elected a Fellow of the American Academy of Arts and Sciences in 1874, and a member of the National Academy of Sciences in 1889.
Astragalus lemmonii, the Lemmon's milkvetch, is a rare plant of eastern California. It is a member of the bean family, the Leguminosae, and specifically a member of the subfamily Papilionoideae. The genus Astragalus is a large genus within this family; members of this genus are known as milkvetches or locoweeds. Close relatives of this particular species include Astragalus peckii and Astragalus lentiformis.
Rigiopappus is a genus of North American plants in the aster tribe within the sunflower family. It is closely related to genus Pentachaeta.
Lepidospartum is a genus of North American desert shrubs in the daisy family. They are known commonly as broomsages or scalebrooms. These are tall, woody shrubs with stiff twiggy branches that resemble brooms. They are native to the southwestern United States and far northern Mexico. These shrub have thin, narrow, needlelike or scalelike leaves and bear yellow daisy flowers.
Achyronychia is a monotypic genus of flowering plant containing the single species Achyronychia cooperi, which is known by the common names onyxflower and frost-mat. This plant is native to the Mojave and Sonoran Deserts of northern Mexico and the U.S. states of California, Nevada, Utah and Arizona. In California, it is known from San Diego, Imperial, Riverside, Los Angeles, San Bernardino and Inyo Counties. In Arizona, it occurs in Yuma, Mohave, Pima, Pinal and Maricopa Counties. It has also been reported from Washington County in Utah, and from Clark County, Nevada.
Bebbia, common name sweetbush, is a genus of aromatic shrubs in the daisy family.
Eatonella is a North American genus of plants in the daisy family containing the single known species Eatonella nivea, which is called by the common name white false tickhead. This small annual is native to the western United States, particularly the Great Basin, where it grows in sandy soils. It has been found in Washington, Oregon, Idaho, Nevada, and eastern California.
Ericameria cuneata is a species of flowering shrub in the daisy family known by the common name cliff goldenbush. This plant is native to the southwestern United States and northwestern Mexico.
Geraea is a genus of the sunflower family from southwestern United States and northwestern Mexico, commonly called the Desert Sunflower.
Lindheimera is a genus of flowering plants in the sunflower tribe within the daisy family found in North America. The genus is named for German-American botanist Jacob Lindheimer, 1801–1879.
Acamptopappus sphaerocephalus is a species of flowering plant in the aster family known by the common name rayless goldenhead. It is native to the southwestern United States, where it occurs in southern California, southern Nevada, southern Utah, and Arizona.
Ericameria paniculata is a species of flowering plant in the sunflower family Asteraceae, native to the southwestern United States. It is an evergreen yellow-flowered desert shrub.
This George Engelmann bibliography provides an overview of works written by the 19th century scientist George Engelmann. They appeared mostly in journals such as the London Journal of Botany, the Botanischen Zeitung, the Boston Journal of Natural History, the American Journal of Science and Arts, the Transactions of the Academy of Science of St. Louis, the Proceedings of the Academy of Natural Sciences of Philadelphia, the Bulletin of the Torrey Botanical Club, the American Naturalist, and the Botanical Gazette or the Gardeners' Chronicle.
Wyethia arizonica is a plant species native to Arizona, Colorado, New Mexico and Utah. It grows in meadows in coniferous forests at elevations of 600–3,000 m (2,000–9,800 ft).
Phaulothamnus is a genus of plants formerly included in the family Phytolaccaceae but now considered a part of the Achatocarpaceae.
Hemizonella is a genus of North American plants in the tarweed tribe within the sunflower family.
Acamptopappus shockleyi, the Shockley's goldenhead, is a perennial subshrub in the found in and near the eastern Mojave desert in southern Nevada and southeastern California.
Ericameria cooperi is a North American species of shrubs that grows in the desert regions of southern Nevada, southern and eastern California, and Baja California. It is in the goldenbush genus in the.
