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|Family: Asteraceae (Compositae)||View Description||Dichotomous Key|
|Genus:||View Description||Dichotomous Key|
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Habit: Perennial herb, from taproot or thick rhizome, sometimes with branched caudex. Stem: decumbent-ascending to erect, unbranched, +- scape-like, generally distally finely loose-tomentose, glandless or stalked-glandular. Leaf: most basal in rosette, sessile, linear to oblanceolate, 3-veined, entire, glabrous to sparsely long-soft-hairy or stalked-glandular. Inflorescence: heads radiate, 1; involucre broadly top-shaped; phyllaries +- equal or graduated in (2)3--4 series, generally +- purple, linear to linear-elliptic or oblanceolate, leaf-like in texture (or proximal margins +- hardened), glabrous to loose-tomentose; receptacle flat, shallowly pitted, epaleate. Ray Flower: 10--40; corolla +- white to purple. Disk Flower: corolla tubular, yellow; anther tip ovate-triangular; style branch appendages lance-linear, 1.5--2.2 mm. Fruit: 4--5 mm, narrowly cylindric, +- brown, ribs 5--10, raised, faces glabrous or sparsely short-strigose; pappus +- white, of minutely barbed bristles in 1 series, sometimes also with few short bristles or hairs.
Species In Genus: 3 species: western United States and adjacent Canada. Etymology: (Greek: mountain + crown)
Unabridged Note: Oreostemma is distinguished by a basal rosette of narrow, 3-veined leaves, solitary heads on - scapose stems, top-shaped involucres with (2)3--4 series of +- equal, evenly herbaceous phyllaries, pink to purple rays, greatly elongate style-branch appendages, and cylindric fruits.
eFlora Treatment Author: Guy L. Nesom
Jepson Online Interchange
Key to OreostemmaPrevious taxon: Onopordum tauricum
Next taxon: Oreostemma alpigenum var. andersonii
Citation for this treatment: Guy L. Nesom 2017. Oreostemma, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=80206, accessed on April 28, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on April 28, 2017.