| Toiyabea peirsonii | |
|---|---|
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Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Toiyabea |
| Species: | T. peirsonii |
| Binomial name | |
| Toiyabea peirsonii | |
| Synonyms [1] | |
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Tonestus peirsonii is a local-endemic species of flowering plant in the family Asteraceae known by the common names Inyo tonestus, [2] Peirson's serpentweed [3] and Peirson's tonestus.
The plant is endemic to California, where it is known only from the Eastern High Sierra Nevada, and the White Mountains across Owens Valley to the east, both within Inyo National Forest. It grows in mountain habitat in subalpine and alpine climates at 2900–3700 m, preferring rock talus or niches in granite cliffs. [4] These images are from the original type location high in Rock Creek basin, Inyo County CA. [5]
Toiyabea peirsonii is a perennial herb producing a branching stem from a caudex and taproot unit, reaching up to about 20 centimeters tall and taking a clumpy form. The leaves are up to 8 centimeters long, variable in shape but usually broader toward the end, and with toothed edges. [2] Dried remnants of leaves or flowers from previous years may be visible.
The inflorescence is usually a single flower head, or a cluster of up to four heads, each up to 2 centimeters wide with green, rough-haired phyllaries in a broad (14-28mm) somewhat leaf-like involucre below the flower. The head bears 16-20 curling, bright yellow ray florets around a center containing many tubular disc florets. Blooming occurs in July and August. [4]
Hulsea vestita is a species of flowering plant in the family Asteraceae known by the common name pumice alpinegold.
Arnica parryi is a North American species of flowering plant known by the common names Parry's arnica or nodding arnica. It is native to western Canada and the western United States as far south as Inyo County, California and McKinley County, New Mexico. It grows in temperate coniferous forests and alpine meadows in mountainous areas, primarily the Rocky Mountains, Cascades, and Sierra Nevada.
Oreostemma peirsonii is a species of flowering plant in the family Asteraceae known by the common names Peirson's aster and Peirson's mountaincrown.
Microseris sylvatica is a species of flowering plant in the family Asteraceae known by the common names sylvan scorzonella and woodland silverpuffs. It is endemic to California, where it has a scattered distribution throughout the central California Coast Ranges and inland mountain ranges, including the Sierra Nevada of the state. Its habitat includes grassland and openings in wooded areas.
Orochaenactis is a monotypic genus of flowering plants in the daisy family containing the single species Orochaenactis thysanocarpha, which is known by the common name California mountain pincushion. It is endemic to the southern Sierra Nevada of California, where it grows in the forests and meadows of the high mountains.
Perityle inyoensis, known by the common names Inyo rockdaisy and Inyo laphamia, is a rare species of flowering plant in the aster family.
Podistera nevadensis is an uncommon species of flowering plant in the carrot family known by the common names Sierra podistera and Nevada podistera.
Pseudobahia bahiifolia is a rare species of flowering plant in the family Asteraceae known by the common name Hartweg's golden sunburst.
Pseudobahia peirsonii is a rare species of flowering plant in the family Asteraceae known by the common names San Joaquin adobe sunburst and Tulare pseudobahia. It is endemic to California, where it is known from a few mostly small occurrences along the southeastern side of the San Joaquin Valley where it rises into the Sierra Nevada foothills. It grows in grassland and oak woodland habitat. It prefers heavy adobe clay soils. The plant became a federally listed threatened of the United States in 1997.
Pyrrocoma apargioides is a species of flowering plant in the family Asteraceae known by the common name alpineflames. It is native to the western United States from the Sierra Nevada of California east to Utah, where it grows in the forests and meadows of high mountains. It is a perennial herb growing from a taproot and producing one or more stems to 30 centimeters in length. The stems are decumbent or upright, reddish, and hairless to slightly woolly. Most of the leaves are located around the base. They are thick and leathery, lance-shaped with large sawteeth along the edges, often center-striped in white, and measure up to 10 centimeters long. The inflorescence is usually a single flower head lined with centimeter-long phyllaries which are reddish to green with red edges. The head has a center of yellow disc florets and a fringe of ray florets which are yellow, often splashed with red along the undersides, measuring up to 1.6 centimeters in length. The fruit is an achene which may be well over a centimeter in length including its pappus.
Pyrrocoma lucida is a species of flowering plant in the family Asteraceae known by the common names sticky goldenweed and sticky pyrrocoma. It is endemic to California, where it is known only from the northern Sierra Nevada. It grows in mountain forests and clay flats with alkali soils. This is a perennial herb growing from a taproot, producing an erect stem up to 75 centimetres (30 in) tall. It is hairless and glandular, its surface resinous and shiny. The leaves are lance-shaped with sharply toothed edges, the largest near the base of the stem reaching 25 centimetres (10 in) in length. Smaller leaves up to 10 centimetres (4 in) long occur higher on the stem. The inflorescence is a narrow spikelike array of many flower heads lined with thick, overlapping, gland-dotted phyllaries. Each head contains up to 40 yellow disc florets surrounded by a fringe of up to 20 yellow ray florets. The fruit is an achene up to a centimeter long including its pappus.
Raillardella argentea is a species of flowering plant in the family Asteraceae known by the common name silky raillardella. It is native to the Sierra Nevada and nearby mountain ranges of California, its distribution extending east into Nevada and north along the Cascade Range and Klamath Mountains into Oregon. It grows in many types of dry, open mountain habitat. It is a rhizomatous perennial herb growing in a clump of rosetted basal leaves. The leaves are lance-shaped, up to 8 centimeters long, and coated in silky hairs. The plant produces an inflorescence up to about 15 centimeters tall consisting of a solitary flower head which is cylindrical to somewhat bell-shaped. The head is enclosed in the fused outer scales of the flowers, which look similar to the phyllaries of many other species' flower heads. The head contains many yellow disc florets up to a centimeter long each, and no ray florets. The fruit is a long, narrow achene which may be 2 centimeters in length including its plumelike pappus.
Rudbeckia californica is a species of flowering plant in the family Asteraceae, known by the common name California coneflower.
Senecio clarkianus is a species of flowering plant in the aster family known by the common name Clark's ragwort. It is endemic to the Sierra Nevada of California, where it grows in the moist meadows on the western slopes of the range. It is a perennial herb growing up to 1.2 meters tall from a caudex and fibrous root system. The solitary erect stem is lined evenly with leaves up to about 18 centimeters long, their blades deeply lobed or dissected into narrow, pointed segments. The herbage is hairy to woolly in texture. The inflorescence bears several flower heads which are lined with green-tipped phyllaries. They contain many yellow disc florets and each has usually 8 or 13 narrow yellow ray florets about a centimeter long, sometimes longer.
Senecio pattersonensis is an uncommon species of flowering plant in the aster family known by the common names Mono ragwort. and Mount Patterson senecio.
Packera werneriifolia, known by the common names alpine rock butterweed and hoary groundsel, is a species of flowering plant in the aster family. It is native to the western United States in the Sierra Nevada mountain habitat in subalpine and alpine climates, including forests and barren talus.
Stenotus lanuginosus is a species of flowering plant in the family Asteraceae known by the common names woolly mock goldenweed and woolly stenotus.
Toiyabea eximia is a species of flowering plant in the family Asteraceae known by the common names Lake Tahoe serpentweed and Tahoe tonestus. It is native to the High Sierra Nevada, where it is known only from the vicinity of Lake Tahoe on the California-Nevada border. It grows in alpine and subalpine mountain habitat. It is a short, clumpy perennial herb growing up to 13 centimeters tall. The thick stems are hairless and glandular, the lower parts covered in the withered leaf bases of previous seasons' growth. The toothed or serrated leaf blades are up to 3 to 5 centimeters in length. The inflorescence is a single flower head or a cluster of a few heads. Each is 1 to 1.5 centimeters wide with green phyllaries. The head bears at least 10 bright yellow ray florets around a center containing many tubular disc florets.
Tonestus lyallii is a species of flowering plant in the family Asteraceae known by the common names Lyall's goldenweed, Lyall's serpentweed and Lyall's tonestus. It is native to western North America, particularly in the Rocky Mountains and the mountain ranges of the Pacific Northwest with scattered occurrences between. It is a perennial herb growing in clumps or short bunches not more than about 15 centimeters tall, the stem branching from a tough caudex. The leaves are smooth-edged and linear or lance-shaped, the largest at the base of the plant reaching up to about 8 centimeters long. The inflorescence is a single flower head or a pair of heads each about a centimeter wide with green or red phyllaries. The head bears at least 10 or 11 bright yellow ray florets around a center containing many tubular disc florets.
Ericameria parryi is a species of flowering plant in the family Asteraceae known by the common name Parry's rabbitbrush. It is native to much of the western United States.
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