36 General Key to the Families 



LXI. SCROPHULARIACE^E. FIGWORT FAMILY 



Herbs, shrubs or rarely trees, bitterish, occasionally narcotic- 

 poisonous; leaves alternate or opposite, without stipules, very vari- 

 ous ; flowers perfect, mostly complete, irregular, corolla two-lipped, 

 inflorescence very various; fruit a two-celled and usually many- 

 seeded calsule. 



SUBFAMILY ANTIRRHINOIDE^ 

 TRIBE CHELONE^: 



I. COLLINSIA. Nutt. 



i. C. tenella. Pursh. Blue-eyed Mary. 

 II. PENSTEMON. (Mitchell.) Ait. 



1. P. fruticosus. (Pursh.) Greene. Large Purple 



Beard-tongue. 



2. P. Menziesii. Hook. Small-leaved Beard-tongue. 



3. P. procerus. . Dougl. Blue Beard-tongue. 



4. P. humilis. Nutt. Slender Beard-tongue. 



5. P. confertus. Dougl. Yellow Beard-tongue. 



TRIBE GRATIOLE^: 



III. MlMULUS. L. 



1. M. Lewisii. Pursh. Red Monkey Floiver. 



2. M. Langsdorfii. Bonn. Yellow Monkey Flower. 



3. M. moschatus. Dougl. Musk Flower. 



4. M. alpinus. Gray. Alpin? Monkey Flower. 



SUBFAMILY RHINANTHOIDE^E 

 TRIBE DIGITALE^ 



IV. VERONICA. (Tourn.) L. 



1. V. alpina L. var. unalaschensis. C. and S. Alpine 



Speedwell. 



2. V. humifusa. Dickson. Thyme-leaved Speedwell. 



3. V. americana. Schwein. Water Speedwell. 



