SCROPHULARIACEiE. 155 



4. SCKOrilULA'UIA, Tot'.rn. FiGWOET. 



S. nodo'sa, L., var. Marilandiea,, Gr. stem smooth, 

 3-4 feet Mgh. Leaves ovate or oblong, the upper lanceolate, 

 serrate. — Damp thickets. (There appear to be two forms, 

 one with broad leaves and greenish-brown flowers, and the 

 other with narrow leaves and greenish-yellow flowers.) 



5. COLLISS'IA-, Nutt. 



1. C. verna, Nutt. Slender, 6-20 inches high. Lower 

 leaves ovate, upper ovate-lanceolate, clasping. Corolla 

 (blue and white) twice as long as the calyx. Peduncles 

 long. — Western Ontario. 



2. C. parviflo'ra, Dougl. Smaller. Corolla (blue) very 

 small, scarcely longer than the calyx. Peduncles short. — 

 Chiefly N. W. 



6. CHEKO'iiii;, Tourn. Tdbtle-head. 

 C. glabra, L. stem smooth, erect and branching. Leaves 

 short-petioled, lance-oblong, serrate, opposite. Bracts of 

 the flowers concave. — "Wet places. 



7. PEJfTSTE'MOJf, Mitchell. Beakd-tongue. 



1. P. pubes'eens. Stem 1-3 feet high, pubescent; the 

 panicle more or less clammy. Throat of the corolla almost 

 closed. Stem leaves lanceolate, clasping. — Dry soil. 



2. P. gra'eilis, Nutt. Stem 1 foot high or less, glabrous 

 or nearly so, viscid-pubescent above. Corolla tubular- 

 funnel-form, the throat open, lilac-purple or whitish.-'— 

 N.W. 



3. P. aeumina'tus, Dougl. Stem 6-20 inches high, stout, 

 glabrous and glaucous. Leaves thick, the lower obovate or 

 oblong, the upper lanceolate to broadly ovate or clasping. 

 Panicle narrow, leafy below. — N.W. 



'4. P. erista'tUS, Nutt. Pubescent, and viscid-pubescent 

 above. Leaves from linear-lanceolate to oblong. Corolla 

 funnel-form, the lower lip long-villous within. Sterile fila- 

 ment copiously yellbw-bearded. — N.W. 



