348 GENTiANACE^. (GENTIAN FAMILY.) 



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

 -*- Branches all opposite and stems more or less A-angled ; Jloivers 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. Ston 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. 



•*-»• ++ Corolla rose-pink, rarely white, with a yellowish or greenish eye, 



3. S. brachiata, EIL Stem slightly an(7/ec/, 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, Pursh. Stein sojnewhat 4-icinged-ang/ed ,mxxch branched 

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

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

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



H- •*- Branches alternate {or the lower opposite in n 5) • peduncles \-Jiowered. 



++ Ccdyx-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 

 (I - 1' long), exceeding the rose-colored or almost white corolla. — Sea-coast 

 and near it, Va. to Tex. 



•w- ++ Calyx-lobes slender and tube very short {prominently costate in n. 6, and 

 longer, nearly or quite enclosing the retuse capsule). 



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



leaves ovate with subcordate clasping base (i-l' 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-shajjcd-liiiear. varying 

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

 parted. — Salt marshe%^Iass. to Fla. Appears to pass into the next ; corolla 

 in both at times pink or white. 



8. S. gracilis, Salisb. Stem very slender, a.t length di^i\selyhra.nched; 

 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,//-07« obovate to lanceolate, upper narrowly 

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



