Petasites frigidus, the Arctic sweet coltsfoot or Arctic butterbur, is a species of flowering plant in the family Asteraceae. It is native to Arctic to cool temperate regions of the Northern Hemisphere in northern Europe, northern Asia and northern North America.
Platanthera yadonii, also known as Yadon's piperia or Yadon's rein orchid, is an endangered orchid endemic to a narrow range of coastal habitat in northern Monterey County, California. In 1998 this plant was designated as an endangered species by the United States government, the major threat to its survival being continuing land development from an expanding human population and associated habitat loss. One of the habitats of Yadon's piperia, the Del Monte Forest near Monterey, California, is the subject of a federal lawsuit, based upon endangerment of this organism along with several other endangered species.
Piperia is a former genus within the orchid family Orchidaceae that has since been subsumed under Platanthera.
Lilium columbianum is a lily native to western North America. It is also known as the Columbia lily, Columbia tiger lily, or simply tiger lily.
Iris missouriensis is a hardy flowering rhizomatous species of the genus Iris, in the family Iridaceae. Its common names include western blue flag, Rocky Mountain iris, and Missouri flag.
Platanthera blephariglottis, commonly known as the white fringed orchid or white-fringed orchis, is a species of orchid of the genus Platanthera. It is considered to be an endangered species in Connecticut and Ohio, a threatened species in Florida, Maryland and Rhode Island, exploitably vulnerable in New York, and susceptible to be threatened in Québec.
Collinsia parviflora is a species of flowering plant in the family Plantaginaceae known by the common names maiden blue eyed Mary and small-flowered collinsia.
Gaillardia aristata is a North American species of flowering plant in the sunflower family, known by the common names common blanketflower and common gaillardia. This perennial wildflower is widespread across much of North America, from Yukon east to Québec and south as far as California, Arizona, Illinois, and Connecticut, although it may be naturalized rather than native in parts of that range. It is also naturalized in scattered locations in Europe, Australia, and South America.
Chaenactis douglasii is a North American species of flowering plant in the daisy family known by the common name Douglas' dustymaiden.
Veronica wormskjoldii is a species of flowering plant in the plantain family known by the common name American alpine speedwell. It is native to much of northern and western North America, including the western United States and northern Canada, from where it grows in moist alpine habitat, such as mountain forest understory. It has a wide subarctic distribution from Alaska to Greenland. It is named after the Danish botanist Morten de Wormskjold (1783-1845) who had studied under professor Jens Wilken Hornemann (1770-1841) and had reportedly collected 157 species of vascular plants during an expedition to Greenland in 1812-1813, more than doubling the then number known. The expedition was manifestly to collect specimens for the Flora Danica and was financed by his Wormskjold's father, though Hornemann sponsored chancery secretary Friedrich Gustav Heiliger (c.1789-) as botanical draftsman, paid for by the royal treasury. He stayed in Nuuk and in the vicinity of Qaqortoq and was helped to collect the plant specimens by the local Greenlandic population, which Wormskiold described.
Erythranthe alsinoides is a species of monkeyflower known by the common names wingstem monkeyflower and chickweed monkeyflower. It was formerly known as Mimulus alsinoides.
Platanthera ephemerantha is a species of orchid known by the common names whiteflower rein orchid, slender white piperia, and white-flowered piperia. It is native to western North America from Alaska to the San Francisco Bay Area, where it grows in coniferous forests and other habitat in coastal and inland mountain ranges within 150 kilometers of the coast. It grows erect to about half a meter in maximum height from a bulbous caudex. The basal leaves are up to 18 centimeters long by 3 wide. Leaves higher on the stem are much reduced. The upper part of the stem is a spikelike inflorescence of up to 100 small flowers, mostly arranged along one side of the stem. The fragrant, honey-scented flowers are whiter than those of other Platanthera, but sometimes green-tinged or -veined, or green with white margins. The status of this species in the wild is difficult to determine because most populations are small and may produce flowers only rarely.
Platanthera colemanii is a rare species of orchid known by the common names Coleman's piperia and Coleman's rein orchid. It is endemic to California, where it is known from scattered occurrences along the Sierra Nevada and one disjunct location in Colusa County, California. It grows in coniferous forests and chaparral in deep sandy substrates. It was differentiated from the very similar Platanthera unalascensis in 1993.
Platanthera cooperi is an uncommon species of orchid known by the common names Cooper's rein orchid and chaparral rein orchid.
Platanthera elongata is a species of orchid known by the common names denseflower rein orchid, chaparral orchid and wood rein-orchid. It is native to western North America from British Columbia and Montana to southern California, where it grows in mountain forests and scrub habitat. This orchid grows erect to about 1.3 meters in maximum height from a bulbous caudex, its stem becoming narrow toward the tip. The basal leaves are up to 30 centimeters long by 6.5 wide. Leaves higher on the stem are much reduced. The upper part of the stem is a spikelike inflorescence of many small green flowers which are sometimes densely arranged. They are sometimes faintly and variably fragrant in the evenings. The spur on each flower may be up to 1.5 centimeters long.
Platanthera michaelii is an uncommon species of orchid known by the common names Michael's rein orchid and Michael's piperia. It is endemic to California, where it is known from the coastal plains, hills, and mountains, and the Sierra Nevada foothills. It can be found in varied habitat, including scrub, woodland, and forest. This orchid grows erect to about 70 centimeters in maximum height from a bulbous caudex. The basal leaves are up to 24 centimeters long by 5 wide. Leaves higher on the stem are much reduced. The upper part of the stem is a spikelike inflorescence of many yellow-green flowers which are fragrant in the evenings.
Platanthera transversa is a species of orchid known by the common names royal rein orchid and flat spurred piperia.
Tetradymia argyraea is a species of flowering plant in the aster family known by the common names spineless horsebrush and gray horsebrush. It is native to western North America.
Thelypodium laciniatum is a species of flowering plant in the mustard family known by the common name cutleaf thelypody. It is native to western North America, particularly the Great Basin and surrounding plateau and foothill habitat, where it grows on dry rocky cliffs and hillsides in sagebrush and scrub, usually below 2,400 metres (8,000 ft) elevation.
Platanthera dilatata, known as tall white bog orchid, bog candle, or boreal bog orchid is a species of orchid, a flowering plant in the family Orchidaceae, native to North America. It was first formally described in 1813 by Frederick Traugott Pursh as Orchis dilatata.
