552 SCROPHULARIACEAE 



Corolla sma'l, less than 5 mm. long; ^tem puberulent. 2. P.pallidus. 

 Only the inflorescence or pedicels or calyx pubescent or puberulent. 



Corolla white, abruptly enlarged. 3. P. Digitalis. 



Corolla purplish, gradually enlarged. 4. P. Pentstemon. 



i. P. hirsutus (L.) Willd. In dry woods and thickets: Me. to 

 Ont., Man., Fla., Minn, and Tex. 

 Conn. Rare and local, increasing northwestward. 

 N. Y. Reported from but probably introduced on L. I., rare on 



S. I., thence increasing northward. 

 N. J. Occasional in Camden, Burlington, Ocean and Monmouth 



counties, north and west of the pine-barrens, thence increasing 



northward. 

 Pa. Throughout the area, increasing northward. 



Tertiary, o: Cretaceous, rare: Older Formations, increasing and 

 becoming common northward. 117-220 days. Sea level-3,400 ft. 



2. P. pallidus Small. In sandy soil or swamps: Conn, and N. Y. 



to Mo., Fla. and Okl. 



Conn. Southwestern part of the state. 



N. Y. Westchester Co. 



3. P. Digitalis (Sweet) Nutt. In fields and thickets: Me. to 111., 



Kan., Va. and Ark. 



Not uncommon in most parts of our range, always as an ad- 

 ventive from farther west. 



4. P. Pentstemon (L.) Britton. In woods and thickets: Pa. to 



Fla., Ky. and La. 



Rare as an adventive in Conn., N. Y. and Pa. Not native in 

 our area. 



Pentstemon lubiflorus Nutt. and P. grandiflorns Nutt. have both been credited to our 

 range as waifs or adventives. 



9. Paulownia Sieb. and Zucc. 

 1. P. tomentosa (Thunb.) Baill. Escaped from cultivation: 

 N. Y. and N. J. to D. C. and Ga. Native of Japan. 

 An escape from cultivation in some parts of our range. 



10. Mimulus L. 



Corolla violet, or rarely white. 



Leaves sessile, clasping; peduncles longer than the calyx. I. M. ringens. 



Leaves petioled; peduncles shorter than the calyx. 2. M. alatus. 

 Corolla yellow. 



Plant viscid, diffuse. 3. M. moschatus. 



Plant puberulent, erect. 4. M. Langsdortfii. 



