348 GENTIANACE^. (gENTIAN FAMILY.) 



* Corolla b-parted, or rarely 6~7-parted. 



-»- Branches all opposite and stems more or less -i-angled ; flowers cymose; calyx 



with long and slender lobes. 



■M- 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, 1-nerved, nearly equalling the internodes ; 

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



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

 flat-topped cyme; leaves ovate-lanceolate or ovate, S-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 slighdy 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. angularis, Fursh. Stem somewhat ^-winged-angled, xnwch branched 

 above (1-2^° high), many-flowered ; leaves ovate, acutish, 5-nerved, with a 

 somewhat heart-sha})ed clasping base ; calyx-lobes one third or half the length 

 of the corolla. — Rich soil, N. Y. to Ont. and ^lich., south to Fla. and La. 



-1- H- Branches alternate {or the lower opposite in n. 5) ; peduncles l-flowered. 



■*-*• Calyx-lobes foliaceous. 



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

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

 (I -T 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 cjuite enclosing the refuse capsule). 



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

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

 cejlate ; 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 aicl-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 ])ink or white. 



8. S. gracilis, Salisb. .S^ewi rery s/eHc/er, 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, /row obovate to lanceolate, upper narrowly 

 linear and rather hunger, on the flowering l)ranches subulate; ralyx-lobes slen- 



