184 ELEME^'TS OF BOTANY. 



stigmas entire or 2-lobed; fruit an ovoid, compressed, 2-valved, 

 few-seeded capsule. 



F. Carolinensis Walt. American Columbo. Perennial, 

 root large, bitter; stem erect, stout, 4-8 ft. high; leaves in whorls of 

 4-6, the lower spatulate or oblanceolate, the upper elliptical, becoming 

 small and bract4ike near the summit of the stem ; flowering branches 

 in whorls of 4, forming a large pyramidal panicle ; pedicels slender ; 

 flowers about 1 in. wide ; corolla rotate, yellowish-white with luimer- 

 ous brownish-purple spots, lobes oblong, with a large fringed gland 

 near the middle ; capsule ovoid, longer than the calyx ; seeds flat- 

 tened, W'inged. June-August. In rich and dry woods. 



103. APOCYNACEiE. DOGBANE FAMILY. 



Perennial herbs or shrubs, with acrid milky juice ; leaves 

 simple, alternate, opposite or verticillate, exstipulate ; flow- 

 ers perfect, regular, solitary, cymose or paniculate ; calyx 

 5-parted, persistent ; corolla bell-shaped to salver-form, con- 

 volute in the bud; stamens 5, inserted in the tube of the 

 corolla and alternate with its lobes ; ovary superior, usually 

 of 2 distinct carpels united by the style, sometimes 2-celled 

 or 1-celled with 2 parietal placentae, style simple or 2-parted ; 

 fruit usually 2 follicles, many-seeded, seeds often with a 

 coma. 



I. AMSONIA. 



Perennial herbs ; stem erect, branched ; leaves alternate ; 

 flowers in terminal panicles ; calyx small, 5-parted ; corolla 

 small, pale blue, funnel- or salver-form, pubescent within ; sta- 

 mens inserted above the middle of the tube, included ; ovary 

 of 2 carpels, united at the top by the slender style, stigma 

 globose, surrounded by a cup-shaped appendage ; fruit 2 slen- 

 der, erect, many-seeded follicles, seeds not comose. 



1. A. Amsonia (L.) Britt. Amsonia. Stem smooth and gla- 

 brous, branched above, 2-3 ft. high ; leaves lanceolate, entire, acumi- 

 nate at the apex, acute at the base, smooth above, glaucous or slightly 

 pubescent beneath, short-petioled ; flowers numerous, on bracted 

 pedicels ; corolla tube slender, smooth or sometimes pubescent above, 



