Difference between revisions of "Saussurea angustifolia"
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{{Plant2000 | {{Plant2000 | ||
| − | | | + | |blade arrangement_or_shape=linear,elliptic |
| − | | | + | |chromosome count=26,52 |
| − | | | + | |head arrangement=crowded,in,moreorless |
| − | + | |margin arrangement=crowded,separated | |
| − | + | |margin external_texture=glabrous,arachnoid | |
| − | + | |margin shape=entire,denticulate,cauline,oblong | |
| − | | | + | |phyllary position=outer |
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| − | |margin shape=entire, | + | |
| − | |phyllary position=outer | + | |
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|phyllary size=unequal | |phyllary size=unequal | ||
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|stem architecture=simple | |stem architecture=simple | ||
| − | |stem | + | |stem external_texture=arachnoid |
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|whole_organism life_style=plant | |whole_organism life_style=plant | ||
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|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 21:58, 14 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.
