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		Flat Pea - Lathyrus sylvestris
		
			
				Other Names:  
				Flat Peavine, Narrow-leaved Everlasting-pea
				
			
		
		
		
		
	 
	
	 
		General Description
		Rhizomatous. Stems winged, climbing, 6–20 cm. Leaves with 2 lanceolate leaflets, 5–12 cm long; rachis prolonged into a tendril; stipules lanceolate, 1–3 cm long. Flowers red (drying blue); calyx tube 4–5 mm long; sepals unequal, shorter than the tube; banner ca. 15 mm long. Legume 4–6 cm long (
Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).
 
		
	
	
	Species Range
	
		
			Montana Range
		Range Descriptions
			
			
			
				
					
					Non-native
				 
			
				
					
			 
			
		 
		
	 
	
    		Range Comments
			Ravalli and Sanders counties. Introduced as an ornamental, escaped throughout U.S.; native to Europe (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).
			
		
		Observations in Montana Natural Heritage Program Database
		Number of Observations: 5
		
		
(Click on the following maps and charts to see full sized version)
		Map Help and Descriptions
		
		
			
				Relative Density
				
			 
		
			
				Recency
				
			 
		
		 
		
			
				
			
				
			
					
				
			(Observations spanning multiple months or years are excluded from time charts)
		 
		
			
		
		
	
		Habitat
		
		
		
	
		Ecology
		POLLINATORS The following animal species have been reported as pollinators of this plant species or its genus where their geographic ranges overlap: 
Bombus appositus, 
Bombus fervidus, 
Bombus flavifrons, 
Bombus sitkensis, and 
Bombus occidentalis (Thorp et al. 1983, Colla and Dumesh 2010, Koch et al. 2012).
 
		
	
		Management
		
		
	
		Stewardship Responsibility
		
		
	
	References
	
		
			- Literature Cited AboveLegend:  
 View Online Publication
Colla, S.R. and S. Dumesh. 2010. The bumble bees of southern Ontario: notes on natural history and distribution. Journal of the Entomological Society of Ontario 141:39-68.
Koch, J., J. Strange, and P. Williams. 2012. Bumble bees of the western United States. Washington, DC: USDA Forest Service, Pollinator Partnership. 143 p.
Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
Thorp, R.W., D.S. Horning, and L.L. Dunning. 1983. Bumble bees and cuckoo bumble bees of California (Hymenoptera: Apidae). Bulletin of the California Insect Survey 23:1-79.
 
			- Additional ReferencesLegend:  
 View Online Publication
Do you know of a citation we're missing?
Lesica, P., M.T. Lavin, and P.F. Stickney. 2022. Manual of Montana Vascular Plants, Second Edition. Fort Worth, TX: BRIT Press. viii + 779 p.
 
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