348 GENTIANACE^E. (GENTIAN FAMILY.) 



* Corolla 5-parted, or rarely 6 - 7 -parted. 



*- Branches all opposite and stems more or less ^-angled ; flowers cymose ; calyx 

 with long and slender lobes. 



+* Corolla white, often turning yellowish in drying. 



1. S. paniculata, Pursh. Stem brachiately much-branched (1-2 high) ; 

 leaves linear or the lower oblong, obtuse, l-nerved, nearly equalling the internodes ; 

 calyx-lobes much shorter than the corolla. Low grounds, Va. to Fla. 



2. S. lanceolata, Torr. & Gray. Stem simple (2-3 high) bearing a 

 flat-topped cyme; leaves ovate-lanceolate or ovate, 3-nerved, the upper acute, 

 much shorter than the internodes ; calyx-lobes longer and flowers larger than 

 in n. 1. Wet pine barrens, N. J. to Fla. 



** -M- Corolla rose-pink, rarely white, with a yellowish or greenish eye. 



3. S. brachiata, Ell. Stem slightly angled, simple below (1-2 high) ; 

 leaves linear and linear-oblong, obtuse, or the upper acute ; branches rather few- 

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

 corolla. Dry or low places, Ind. and N. C. to La. and Fla. 



4. S. anglllaris, Pursh. Stem somewhat ^-winged-angled, much branched 

 above (l-2 high), many-flowered ; leaves ovate, acutish, 5-nerved, with a 

 somewhat heart-shaped clasping base ; calyx-lobes one third or half the length 

 of the corolla. Rich soil, N. Y. to Ont. and Mich., south to Fla. and La. 



i- - Branches alternate (or the lower opposite in n. 5) ; peduncles \-flowered. 

 +* Calyx-lobes foliaceous. 



5. S. Calyc6sa, Pursh. Diffusely forking, pale, 1 high or less; leaves 

 oblong or lance-oblong, narrowed at base; calyx-lobes spatulate-lanceolate 

 (| - 1" long), exceeding the rose-colored or almost white corolla. ; Sea-coast 

 and near it, Va. to Tex. 



** *+ Calyx-lobes slender and tube very short (prominently costate in n. 6, and 

 longer, nearly or quite enclosing the refuse capsule). 



6. S. campestris, Nutt. Span or two high, divergently branched above ; 

 leaves ovate with subcordate clasping base ($- 1' long), on the branches lan- 

 ceolate ; calyx equalling the lilac corolla (1|- 2' broad). Prairies, S. E. Kan. 

 and W. Mo. to Tex. 



7. S. Stellaris, Pursh. Loosely branched and forking; leaves oblong to 

 lanceolate, the upper narrowly linear; calyx-lobes awl-shaped-linear, varying 

 from half to nearly the length of the bright rose-purple corolla; style nearly 2- 

 parted. Salt marshes, Mass, to Fla. Appears to pass into the next ; corolla 

 in both at times pink or white. 



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

 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 ; style cleft to the middle. Brackish marshes, Nantucket, Mass., and 

 N. J., to Fla. and La. 



9. S. Elliottii, Steud. Effusely much branched; leaves small, lower 

 cauline (6" long or less) thickish, from obovate to lanceolate, upper narrowly 

 linear and rather longer, on the flowering branches subulate ; calyx-lobes slen- 



