SCROPHULARIACEiE 87 



stem usually simple, corolla pale yellow, calyx spotted 

 with black, bracts toothed, leaves oblong - lanceolate, 

 crenate ; high ; Grisons, Valais, Canton de Vaud. H. 

 aristatus, Celak. ; stem usually branched, corolla yellow 

 and blue, calyx not spotted, bracts with subulate teeth, 

 leaves narrowly lanceolate, crenate; alpine pastures, 

 frequent. R. angustif alius, Gmel. ; similar, but a larger 

 plant, with narrower leaves ; alpine pastures. 



16. Bartsia, L. 



Flowers in spikes, with leafy bracts ; calyx 4-toothed ; 

 corolla tubular, 2-lipped, upper lip arched; stamens 4, 

 concealed under the upper lip ; capsule elongated ; leaves 

 usually opposite. Herbs, parasitic on roots. 



B. alpina, L. ; flowers large, in the axils of purple 

 bracts, dark purple-violet, anthers bearded, leaves ovate- 

 serrate, upper ones amplexicaul, whole plant very hairy ; 

 alpine pastures, frequent. B. spicata, Ram. ; spike not 

 leafy, bracts linear - lanceolate, plant finely pubescent 

 above ; Pyrenees. • B. viscosa, L. (Eufragia viscosa, 

 Griseb.) ; flowers pale yellow, leaves ovate-lanceolate, 

 sessile, coarsely serrate, whole plant glandular - viscid ; 

 meadows and pine-woods, rare; Valais, Piedmont, Dau- 

 phiny, Pyrenees. B. lutea, L. ; flowers bright yellow, 

 ringent, leaves linear - lanceolate, nearly entire, plant 

 pubescent but not glandular ; dry hills ; Switzerland, 

 Jura, Pyrenees. B. Odontites, Huds. {Euphrasia Odon- 

 tites, L., including serotina, Lam., divergens, Jord., and 

 rubra, Rchb.) ; flowers small, pink, stem branched, end- 

 ing in slender leafy racemes, lower bracts leafy; moist 

 waste places, common. 



