| 词条 | Ericameria discoidea |
| 释义 |
|image = Ericameriadiscoidea.jpg |regnum = Plantae |unranked_divisio = Angiosperms |unranked_classis = Eudicots |unranked_ordo = Asterids |ordo = Asterales |familia = Asteraceae |tribus = Astereae |genus = Ericameria |species = E. discoidea |binomial = Ericameria discoidea |binomial_authority = (Nutt.) G.L.Nesom |synonyms_ref=[1] |synonyms =
|}}Ericameria discoidea, called whitestem goldenbush or sharp-scale goldenweed[2] or whitestem goldenbush or sharp-scale goldenweed,[3] is a species of flowering shrub in the daisy family known by the common name whitestem goldenbush. This plant is native to the western United States from California, Oregon, Nevada, Utah, Colorado, Idaho, and Montana.[2][3]Ericameria discoidea grows in clumpy thickets on rocky slopes. It is a small shrub reaching a maximum height of 40 centimeters (16 inches). It has many erect branches covered in a foliage of oval-shaped leaves coated in dense white woolly fibers and tiny stalked resin glands. Atop each short branch is an inflorescence of many flower heads, each packed with sometimes as many as 70 disc florets that bloom in golden yellow and wilt to a rusty orange. There are no ray florets.[4] References1. ^The Plant List Ericameria discoidea (Nutt.) G.L.Nesom 2. ^Biota of North America Program 2014 county distribution map 3. ^1 Calflora taxon report, University of California, Ericameria discoidea (Nutt.) G. Nesom, rayless goldenbush, whitestem goldenbush 4. ^1 Flora of North America, Whitestem goldenbush, sharp-scale goldenweed, Ericameria discoidea (Nuttall) G. L. Nesom External links
7 : Ericameria|Flora of the Western United States|Flora of California|Flora of the Great Basin|Flora of the Sierra Nevada (U.S.)|Plants described in 1840|Taxa named by Thomas Nuttall |
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