548 



SCROPHULARIACEAE 



9. Petunia Juss. 



Corolla white, its tube cylindric. 



Corolla violet-purple, its tube campanulate. 



1. P. axillaris. 



2. P. violacea. 



[. P. axillaris (Lam.) B. S. P. In waste places, escaped from 

 gardens: N. Y. and Pa. Native of Brazil. 



Very rare as an escape from gardens, hardly persistent. 



>. P. violacea Lindl. In waste places, escaped from gardens: 

 N. Y. and Pa. Native of Brazil and Paraguay. 



Rare as an adventive in Pa., scarcely known elsewhere ; doubtfully 

 persistent. 



Petunia parviflora Juss. has been collected near N. Y. and Philadelphia as a waif. 

 The Chili Pepper, Capsicum annuum L., has been collected as a waif in Conn. 



5 CROPHULARIACEAE 



Upper lip or lobes of the corolla external in the bud, or wanting 

 (with exceptions in Mimulus).* 

 Leaves prevailingly alternate. 

 Leaves prevailingly opposite. 



Corolla-tube with a spur, sac, or swelling on the lower 

 side near the base. 

 Leaves palmately 3-5-veined. 

 Leaves pinnately veined. 



Corolla-tube with an elongated spur. 

 Flowers solitary in the axils. 

 Flowers in terminal clusters. 

 Corolla tube with a sac or swelling. 

 Corolla tube with neither spur, sac, nor swelling. 



Filaments 5, 4 anther-bearing, 1 sterile more or less 

 different from the others. 

 Sterile stamen a scale, adnate to the upper 



side of the corolla. 

 Sterile stamen more developed. 



Sterile stamen shorter than the others; 



seeds winged. 

 Sterile stamen about equalling the others; 

 seeds wingless. 

 Filaments 2 or 4. 

 Trees. 

 Herbs. 



Anther-bearing filaments 4. 



Sepals united into an angled tube. 

 Sepals distinct or nearly so. 

 Anther-bearing filaments 2. 



Calyx of 5 nearly distinct sepals. 



1. Verbascum. 



2. Cymbai.aria. 



KlCKXIA. 

 LlNARIA. 



Antirrhinum. 



6. Scrophularia. 



7. Chelone. 



8. Pentstemon. 

 q. Paui.ownia. 



Mimulus. 

 Conobea. 



* Key adapted, in part, from Small's Flora S. E. United States. 



