Difference between revisions of "Cirsium eatonii"

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|array architecture=racemiform,corymbiform
 
|array architecture=racemiform,corymbiform
 
|array orientation=erect
 
|array orientation=erect
|chromosome count=34
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|corolla coloration=lavender,purple
|corolla coloration=purple
+
 
|face external_texture=glabrous,glabrous
 
|face external_texture=glabrous,glabrous
|head architecture=short-pedunculate,long-pedunculate
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|head architecture=subsessile,short-pedunculate
|involucre external_texture=glabrous,arachnoid,tomentose
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|involucre external_texture=arachnoid
 
|involucre prominence=evident
 
|involucre prominence=evident
|phyllary architecture_or_shape=spiny
 
 
|phyllary coloration=green,purplish-tinged
 
|phyllary coloration=green,purplish-tinged
|phyllary length=1/2
 
 
|phyllary position=outer
 
|phyllary position=outer
|spine count=many
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|spine count=numerous
 
|spine fragility=stout
 
|spine fragility=stout
|stem fragility=stout
 
 
|stem orientation=erect,ascending
 
|stem orientation=erect,ascending
 +
|trichome architecture=non-septate
 
|Flowering time=summer,jun,jul,aug,sep,fall
 
|Flowering time=summer,jun,jul,aug,sep,fall
 
}}
 
}}
Variety clokeyi is endemic to the Spring Range of Clark County. Its range overlaps that of Cirsium arizonicum var. tenuisectum but no hybrids between the two are known.
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Variety viperinum is apparently endemic to upper elevations of the Snake Range of White Pine County, Nevada. Heads of var. viperinum are similar in size to those of var. clokeyi. These taxa can be distinguished readily by the features in the key. Ranges of the two varieties are separated by about 340 km. Hybridization with Cirsium inamoenum is suspected based upon apparently intermediate specimens.

Revision as of 22:14, 14 November 2013


Variety viperinum is apparently endemic to upper elevations of the Snake Range of White Pine County, Nevada. Heads of var. viperinum are similar in size to those of var. clokeyi. These taxa can be distinguished readily by the features in the key. Ranges of the two varieties are separated by about 340 km. Hybridization with Cirsium inamoenum is suspected based upon apparently intermediate specimens.