Cirsium brevifolium

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Cirsium brevifolium occurs in the Palouse prairie region of eastern Washington, eastern Oregon, and western Idaho.

Facts about "Cirsium brevifolium"
apex external texturescarious +
apex orientationreflexed +
apex prominence or shapeflat +
array architecturecorymbiform + and paniculiform +
base architectureclasping +, proximal + and sessile +
body shapeentire +
branch orientationascending +
chromosome count22 + and 26 +
collar colorationyellowish +
corolla colorationwhite + and lavender-tinged +
cypsela colorationbrown +
face arrangementdistributed +
face colorationgreen +
face countpresent +
face external texturegray-tomentose +, tomentose + and glabrate +
face orientationappressed +
face otherprincipal +
face positionadaxial +, basal +, cauline +, outer + and middle +
face sizereduced +
flowering timesummerjun +, jul +, aug +, sep + and oct +
habitatpalouse prairie +
head arrangementsingly +
head countfew +
head positionterminal +
involucre external textureglabrous + and floccose +
involucre shapehemispheric + and campanulate +
leaf shapeoblanceolate +, elliptic +, unlobed +, spinulose +, dentate + and pinnatifid +
lobe arrangementseparated +
lobe shapelinear +, triangular-ovate +, spinulose +, few + and lobed +
margin architecturespinier than those +
margin architecture or shapebractlike +
margin positiondistalmost cauline +
margin shapeunlobed +, less deeply shapdivided than proximal + and divided than proximal +
margin shape or vernationrevolute +
phyllary arrangementimbricate +
phyllary colorationgreenish + and brown +
phyllary shapeovate +, lanceolate + and linear +
ridge prominenceprominent +
spine orientationspreading +
spine widthfine +
sprout orientationhorizontal +
stem external texturegray-tomentose +
stem orientationerect +
trichome architecturenon-septate +
trichome widthfine +
whole organism life styleperennial +