GEXTIANACE^E. (GENTIAN FAMILY.) 



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



-i- Branches all opposite and stems more or /ess 4-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 loicer 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, 

 inu ch shorter than the iuternodes; 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 ijellowish 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. angularis, Fursh. Stem somewhat ^-winged-angled, much branched 

 above (1-2^ high), many-flowered ; leaves ovate, acutish, 5-iierved, 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- H- Branches alternate (or the lower opposite in n. 5) ; peduncles \-flowered. 



+< Calyx-lobes foliaceous. 



5. S. calycosa, 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. 



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

 longer, nearli/ or quite enclosing the retuse capsule). 



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

 leaves ovate with subcordate clasping base (-!' 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 ; stvle nearly 2- 

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

 in botli at times pink or white. 



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

 brandies 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- 



