gentianaoejG. (gentian family.) '3S6 



No. 1. (Chironia lanccolata, Walt. S. corymbosa, Baldw.) — Vfet pine bar- 

 rens, from New Jersey southward. 



4_ ^_ Corolla rose-i)ink, rarely white, with a yellowish or greenish eye: stem erect, 

 1° -3° hii/h, pyrumiihilly maity-flowered : bniiivhes oi>/.osile : peduncles short. 



3. S. brachi^ta, Ell. Stem sliyhtly anyled, simple below (l°-2° high); 

 leaves linear and linear-oblon(j, obtuse, or the upper acute ; branches rather few- 

 flowered, forming an oblong panicle ; calyx-lobes nearly half shorter than the 

 corolla. (S. concinna. Wood, ex char.) —Dryish grassy places, Virginia (Indi- 

 ana, Wood), and southward. — Corolla rather smaller, and its lobes narrower 

 than in the next. 



4. S. angularis, Pursh. St(m sonmchat Awinrjed-angled, much branched 

 above [\°--l^° high), many-flowered; leaves ovate, acutish, 5-nerved, with a 

 stmewhut heart-sha/ied clas/iiiiy base ; calyx-lobes one third or half the length of 

 the corolla. — Dry ground. New York to Illinois and southward. Corolla 1^' 

 wide ; the lobes obovate. 



4- -t- -t- Corolla rose-jnirple or while: stems (5' -20' hiyh) slender, loosely and often 

 alternately branched, or merely forked, terete or scarcely i-anyled : peduncles elon- 

 gated and \-fluwered. 



5. S. ealyc6sa, Pursh. Diffusely forking, pale ; leaves oblong or lance-ob- 

 long, narrowed at lite base ; caly.r-lobes fuliace.ous, spatulate-lanceolate ('i' - I' long), 

 exceeding the almost while corolla. — Marshes, E. Virginia, and southward. 



G. S. Stellaris, Pursh. Loosely branched and forking ; leaves oblong- or 

 ovate-lanceolate, or the upper linear; ctdyx-lobes aicl-shaped-linear, varying from 

 half to nearly the length of the bright rose-purple corolla. — Salt marshes, Massachu- 

 setts to Virginia, and southward. Too near the next. 



7. S. gracilis, Salisb. Stem very slender, at length diffusely branched ; 

 the branches and long peduncles filiform ; leaves linear, or the lower lance-linear, 

 the uppermost similar to the setaceous calyx-lobes, which equal the rose-purple 

 corolla. (Chironia campanulata, L.) — Brackish marshes, Nantucket (OaKs), 

 banks of lower Delaware River {Mr. Cooley,Mr. Diffenbaugh), and southward. 



* * Corolla 9-12-parted, large {about 2' bro'td). (Lapithea, Grisebach.) 



8. S. ehloroides, Pursh. Stem (l°-2° high), loosely panicled above; 

 the peduncles Slender, 1 -flowered ; leaves oblong-lanceolate ; calyx-lobes linear, 

 half the length of the deep rose-colored (rarely white) corolla. — Borders of 

 brnckish ponds, Plymouth, Massachusetts, to Virginia, and southward. — One 

 of our handsomest plants. 



2. ERYTHEMA, Pers. Centaury. 



Calyx 4- 5-parted, the divisions slender. Corolla funnel-form or salver-form, 

 with a slender tube and a 4 -5-parted limb. Anthers exserted, erect, twisting 

 spirally. Style slender, single : stigma capitate or 2-lipped. — Low and small 

 branching annuals, chiefly with rose-purple or reddish flowers (whence the name, 

 from (pvBpos, red) ; in summer. All our Northern species were probably intro- 

 duced, and occur in few localities. 



1. E. CicxTAURiuM, Pers. (Ckntacuy.) Stem upright, con/w/)OsT////)n(«(7(r<i 

 above ; leaves oblong or elliptical, acutish ; the uppermost linear ; cytm^ clus- 

 GM 17 



