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7. Nathaliella B. Fedtschenko, Bot. Zhurn. S.S.S.R.  17: 327.  1932.  
石玄参属 shi xuan shen shu 
 
 
 
 
 
Herbs, perennial, small, acaulescent. Leaves basal, rosulate, distinctly petiolate. Flowers solitary, axillary. Pedicel short. Calyx 5-lobed. Corolla limb obscurely 2-lipped, subactinomorphic; lower lip 3-lobed; upper lip 2-lobed. Stamens 4, all fertile, didynamous, 2 anterior slightly longer than 2 posterior; anther locules basally divergent; staminode 1. Ovary many ovuled. Style filiform; stigma flat-dilated. Capsule 2-valved. 
 
 
 
 
One species: China, Kyrgyzstan. 
 
 
 
 
                         
                          
Lower Taxon
 
   
	 
                      
                         
		
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