Difference between revisions of "Cirsium scariosum"

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{{Plant2000
 
{{Plant2000
 
|appendage external texture=scarious
 
|appendage external texture=scarious
|appendage position=inner
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|appendage shape=erose-toothed
|appendage shape=acuminate,entire,erose-toothed
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|blade o=midveins
|appendage size=expanded
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|blade shape=oblong,oblanceolate,elliptic,lobed
|blade shape=linear,oblong,oblanceolate,elliptic,lobed,unlobed
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|corolla coloration=white,dull
|chromosome count=34
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|face architecture=armed
|corolla coloration=white,pink-tinged,purple
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|face external texture=glabrous,gray-tomentose,glabrous
|face external texture=gray-tomentose,adaxial,villous
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|face length=longer
|head architecture=sessile,subsessile,sessile,subsessile
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|face position=adaxial,distal
|head arrangement=crowded
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|face shape=divided
 +
|head architecture=sessile,pedunculate
 +
|head arrangement=solitary,crowded
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|involucre shape=ovoid,hemispheric
 
|phyllary position=outer
 
|phyllary position=outer
 
|phyllary shape=mid,ovate
 
|phyllary shape=mid,ovate
|rosette density=dense
 
|spine coloration=pink,or,purplish
 
 
|spine fragility=stout
 
|spine fragility=stout
|spine length=longer
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|stem architecture=short-branched,much-branched,leafy
|spine size=slender,1,1
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|stem external texture=glabrous,villous
|stem architecture=unbranched,leafy
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|trichome architecture=septate
|stem count=absent
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|whole organism architecture=caulescent,acaulescent
|stem external texture=villous,tomentose
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|stem fragility=stout
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|stem height or length=short
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|stem internal texture=fleshy
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|trichome architecture=septate,non-septate,septate,septate
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|trichome external texture=villous
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|trichome width=fine
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|whole organism architecture=acaulescent,with,dense,rosettes,,of,leaves,and,cluster,,,of,sessile,or,subsessile,heads,.,caulescent
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|whole organism arrangement=cluster
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|whole organism life style=plant
 
|whole organism life style=plant
|flowering time=summer,jun,jul,aug
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|whole organism orientation=erect
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|flowering time=summer,jun,jul,aug,sep,fall
 
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Variety americanum is a variable taxon widely distributed in mountains and valleys of the western United States from the eastern slope of the Cascades and Sierra Nevada across the northern Great Basin to the central Rocky Mountains. Within some populations dominated by acaulescent forms, occasional short, caulescent individuals or even taller plants may occur. These approach var. coloradense in the Colorado Rockies and resemble var. scariosum in the valleys of Oregon. Short caulescent individuals within populations of var. coloradense and var. scariosum approach var. americanum. Although the extremes are strikingly different, the genetic differences are apparently slight. Acaulescent individuals from the San Francisco Peaks and White Mountains of Arizona are treated here as var. coloradense. In the mountains of Colorado putative hybrids have been documented between Cirsium scariosum var. americanum and C. canescens and between C. scariosum var. americanum and C. undulatum.
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Variety thorneae grows mostly in the Basin and Range province of Utah with populations in eastern Nevada, southern Idaho, and western Colorado.

Revision as of 19:15, 28 November 2013


Variety thorneae grows mostly in the Basin and Range province of Utah with populations in eastern Nevada, southern Idaho, and western Colorado.