Description
                                                                                                            Key Characters:
                                                                            
                                    
                                    
                                                                                                            Growth Form:
                                                                                Herbs to 1 m tall, with stolons and watery juice.                                        
                                    
                                                                        
                                                                                                                                                                                    
                                                                                                                                                                                    
                                                                                                                                                                                    
                                                                                                                                                                                    
                                                                                                                                                                                    
                                                                                                            Stems:
                                                                                Flowering stems to 30 cm.                                                                                
                                                                        
                                                                                                                                                                                    
                                                                                                            Roots: 
                                                                                                                                                                    
                                                                        
                                                                                                            Leaves: 
                                                                                
                                                                                                                        Leaves simple.                                                                                 
                                        
                                                                                                                        Opposite.                                                                                 
                                        
                                                                                                                        Blades elliptic, ovate, or broadly ovate, 2–9 X 2–6 cm.                                                                                 
                                        
                                                                                                                        
                                        
                                                                                                                        Base truncate or subcordate.                                                                                 
                                        
                                                                                                                        Surfaces glabrous.                                                                                 
                                        
                                                                                                                        Margins ciliate with hairs 0.1–1 mm.                                                                                 
                                        
                                                                                                                        Lateral veins to 5 pairs.                                                                                 
                                        
                                                                                                                        Short-petiolate.                                                                                 
                                        
                                                                                                                        Stipules absent or vestigial.                                                                                                                                                            
                                                                        
                                                                                                                                                                                    
                                                                                                                                                                                    
                                                                                                            Flowers:
                                                                                                                        Flowers in pedicel 3–5 cm.                                        
                                                                                Flowers bisexual (perfect).
                                        
                                                                                Sepals narrowly triangular, ca. 9 mm, densely ciliate, without glands.
                                        
                                                                                Corolla funnelform, tube cylindric, bluish purple, tube 1.2–1.5 cm, limb 3–5 cm in diam, lobes obliquely truncate, spreading, shorter than tube, overlapping to left.
                                        
                                                                                Stamens 5, inserted just below middle of corolla tube; anthers short, applanate, apex puberulent. Disc glands 2, ligulate, alternating with ovaries.
                                        
                                                                                                                        
                                                                                Ovary superior; styles filiform; pistil head ringlike, apex densely hairy.                                        
                                                                                                                                                                                                    
                                                                        
                                                                                                            Fruit:
                                                                                                                        Follicles 2; spreading; ca. 5 cm; cylindric; striate.                                        
                                                                                Seeds glabrous.                                                                                                                    
                                                                        
                                                                                                                                                                                    
                                                                                                            Ploidy:
                                                                                                                        2n = 92
                                                                            
                                                                        
                                                                                                            Habitat:
                                                                                                                                                            
                                                                        
                                                                                                                                                                                    
                                                                                                            Elevation Range: