101 >>,> V , 



lOa. Corolla pale-blue (510 dm. high) 



Apple of Peru, Nicandra physalodes. 

 lOb. Corolla red or violet (24 dm. high) 



Petunia, Petunia yiolacea. 



lOc. Corolla white 11. 



lla. Corolla all white (24 dm. high) Petunia, Petunia axillaris. 

 lib. Corolla with yellow center 



White Ground Cherry, Physalis grandiflora. 



12a. Corolla 30 mm. wide or more, somewhat irregular; stamens 

 declined to one side (3 6 dm. high) 



Henbane, Hyoscyamus niger. 

 12b. Corolla smaller, strictly regular 13. 



13a. Flowers in terminal panicles; corolla tubular, with slightly 

 spreading lobes (5 10 dm. high) 



Wild Tobacco, Nicotiana rustica. 



13b. Flowers solitary in the axils; corolla short, widely spreading 

 (38 dm. high) (Ground Cherry) 14. 



14a. Annuals with branching slender roots 15. 



14b. Perennials with thickened roots and rootstocks 16. 



15a. Plants pubescent Ground Cherry, Physalis pubescens. 



15b. Plants smooth, or with a few scattered hairs 



Ground Cherry, Physalis ixocarpa. 

 16a. Stem viscid-pubescent 



Ground Cherry, Physalis heterophylla, 

 16b. Stem glabrous or slightly pubescent, not viscid 17. 



17a. Leaves and stem distinctly pubescent 



Ground Cherry, Physalis virglniana. 

 17b. Leaves and stem almost glabrous 



Ground Cherry, Physalis subglabrata. 



SCROPHULAKIACEAE, the Figwort Family 



Herbs with opposite or alternate leaves and usually irregular 

 flowers; corolla of united petals, bearing the 2 or 4 (or rarely 5) 

 stamens attached; petals actually 5, but 'sometimes apparently only 

 2 or 4; a sterile fifth stamen sometimes present; ovary superior, 

 2-celled. 



la. Anther-bearing stamens 5 (6 15 dm. high; flowers in summer) 



(Mullein) 2. 

 Ib. Anther-bearing stamens 4; a sterile fifth stamen may or may not 



be present 3. 

 Ic. Anther-bearing stamens 2 37. 



2a. Leaves densely white-woolly; flowers yellow, in dense spikes 



Mullein, Verbascum thapsus. 



2b. Leaves smooth or nearly so; flowers yellow or white, in loose 

 racemes Moth Mullein, Verbascum blattaria. 



