Difference between revisions of "Saussurea angustifolia"

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{{Plant2000
 
{{Plant2000
|blade arrangement or shape=linear,elliptic
+
|hair external texture=viscid
|chromosome count=26,52
+
|head arrangement=crowded
|head arrangement=crowded,in,moreorless
+
|leaf arrangement=crowded
|margin arrangement=crowded,separated
+
|leaf shape=basal,elliptic
|margin external texture=glabrous,arachnoid
+
|leaf width=wider,than,8,mm,narrower
|margin shape=entire,denticulate,cauline,oblong
+
|margin external texture=arachnoid
|phyllary position=outer
+
|margin shape=denticulate
 
|phyllary size=unequal
 
|phyllary size=unequal
 
|stem architecture=simple
 
|stem architecture=simple
|stem external texture=arachnoid
+
|stem external texture=arachnoid,villous
 
|whole organism life style=plant
 
|whole organism life style=plant
 
|flowering time=jul,summer,aug
 
|flowering time=jul,summer,aug
 
}}
 
}}
 
Extreme forms of the varieties of Saussurea angustifolia are distinctive, ranging from slender, erect, subglabrous specimens of var. angustifolia to dwarf, densely pubescent forms of vars. viscida and yukonensis. The extremes are connected by intermediates. As is indicated by the synonymy, little unanimity exists in the interpretation of these taxa. I have chosen to follow S. L. Welsh (1974) in treating S. densa as a variety of S. angustifolia rather than as a distinct species. The extent to which the differences among these taxa are genetic or environmentally induced has not been investigated.
 
Extreme forms of the varieties of Saussurea angustifolia are distinctive, ranging from slender, erect, subglabrous specimens of var. angustifolia to dwarf, densely pubescent forms of vars. viscida and yukonensis. The extremes are connected by intermediates. As is indicated by the synonymy, little unanimity exists in the interpretation of these taxa. I have chosen to follow S. L. Welsh (1974) in treating S. densa as a variety of S. angustifolia rather than as a distinct species. The extent to which the differences among these taxa are genetic or environmentally induced has not been investigated.

Revision as of 19:15, 28 November 2013


Extreme forms of the varieties of Saussurea angustifolia are distinctive, ranging from slender, erect, subglabrous specimens of var. angustifolia to dwarf, densely pubescent forms of vars. viscida and yukonensis. The extremes are connected by intermediates. As is indicated by the synonymy, little unanimity exists in the interpretation of these taxa. I have chosen to follow S. L. Welsh (1974) in treating S. densa as a variety of S. angustifolia rather than as a distinct species. The extent to which the differences among these taxa are genetic or environmentally induced has not been investigated.