260 SCROPHULARIACE^E. 



acute ; the lowest ovate, slightly toothed and opposite ; peduncles solitary, 

 axillary, very long. Antirrhinum Elatine Linn. 



Sandy fields. N. Y. to Virg. July. (I). Stem 1 2 feet long, with spread- 

 ing branches. Flowers small, yellowish, the upper lip purple. Introduced ? 



Sharp-pointed Toadflax. 



2. L. vulgaris Mill. : stem erect, mostly simple ; leaves linear-lanceolate, 

 scattered, crowded ; flowers imbricated in a terminal spiked raceme ; calyx 

 smooth, shorter than the spur. Antirrhinum Linaria Linn. 



Road sides. Can. to Virg. June Oct. 7J-. Stem 1 2 feet high, somewhat 

 glaucous, sometimes a little branched. Flowers large, yellow, in a dense ter- 

 minal bracteate raceme, rarely with 3 or 5 spurs. A very troublesome weed. 

 Introduced from Europe. Common Toadflax. Snapdragon. 



3. L. Canadensis Spreng. : stem erect or assurgent, mostly simple ; leaves 

 scattered, erect, linear, obtuse ; flowers racemose ; sterile branches procum- 

 bent. Antirrhinum Canadense Linn. 



Low grounds. Can. to Car. May Aug. . Stem about a foot high, 

 slender, often throwing out suckers at base. Flowers very small, blue, in a 

 naked terminal raceme. Canadian Toadflax. 



III. CHELONE.^. 



3. SCROPHULARIA. Linn. Figwort. 

 (So named from its being supposed to cure the scrophula.) 



Calyx deeply 5-cleft or 5-parted. Corolla subglobose ; limb 

 contracted, with 2 short lips ; upper lip 2-lobed, frequently with 

 a scale or abortive stamen within ; lower lip 3-lobed. Capsule 

 2-celled, 2-valved ; valves opening at the apex. 



S. Marylandica Linn. : stem angled, smoothish ; leaves ovate or ovate- 

 lanceolate, acute, coarsely serrate, mostly rounded or cordate at base ; pe- 

 tioles ciliate ; panicle thyrse-like, the branches composed of loosely flowered 

 clusters. >S. nodosa J3enth. in D. C. S. nodosa var. Americana Mich. S. 

 lanceolata Pursh. 



Woods. Can. to Car. W. to California. June Aug. r t\~ Stem 3 5 feet 

 high, 4 angled, branched above, slightly pubescent. Leaves opposite, slightly 

 pubescent beneath. Flowers purple-brown tinged with green, in a large termi- 

 nal oblong panicle. Capsule globular. Very closely allied to, if not identical 

 with, S. nodosa of Europe. Figwort. 



4. COLLINSIA. Nutt Collinsia. 

 (In honor of the late Zaccheus Collins, of Philadelphia.) 



Calyx 5-cleft. Corolla bilabiate, the orifice closed ; upper 

 lip bifid, lower trifid ; intermediate segment carinately saccate 

 and closed over the declinate style and stamens. Capsule glo- 

 bose, partly 1 -celled and imperfectly 4-valved. Seeds 2 3, 

 umbilicate. 



C. verna Nutt. : assurgent, nearly smooth ; leaves remotely and some- 

 what obtusely serrate ; radical ones oblong or cordate and petiolate ; cau- 

 line ovate-oblong, sessile or clasping ; uppermost ternate 



