Sabbatla. GENTIAN ACE^. 115 



•i— Calrx-tube prominentlj- 5-costate, nearly or quite enclosing the retuse capsule : corolla IJ to 

 2 inches in diameter. 



S. campestris, !Niatt, A span or two high, divergently branched above: leaves ovate 

 with subcordate clasping base, somewhat 3-5-nerved, one-half to an inch long, those of the 

 branches lanceolate: peduncles about 2 inches long: calyx-lobes narrowly linear-lanceo- 

 late, acute, half to three-fourths inch long, equalling the broad lobes of the lilac- 

 colored corolla ; angles of its campanulate tube below the sinuses acute and wing-like in 

 flower, thickened in fruit : style very deeply 2-clef t. — Trans. Am. Phil. Soc. n. ser. v. 197 ; 

 Hook. Bot. Mag. t. 5015. S.formosa, Buckley in Proc. Acad. Philad. 1862, 7. — Prairies of 

 Arkansas and Texas. Very showy. 



-)— -f— Calyx-tube verj' short, girding the base of the capsule, not conspicuously costate : plants 

 loosely paniculate-branching : corolla bright rose-color or pink, with white varieties, or the last 

 white. 



S. stellaris, Pursh. Leaves rather fleshy, from oblong to lanceolate and the uppermost 

 narrowly linear: calyx-lobes subulate-linear, from half to nearly the full length of the 

 corolla-lobes : eye or star of the corolla conspicuous : style nearly 2-parted. — Fl. i. 137. 

 S. gracilis, Ell. 1. c, not Salisb. Chironia stellata, Muhl. Cat. — Brackish marshes, coast of 

 Massachusetts to Florida. Appears to pass into the next. 



S. gracilis, Salisb. Stems more slender: branches and peduncles filiform : leaves linear 

 and the uppermost filiform or setaceous : calyx-lobes very slender and as long as those of 

 the corolla (6 to 9 lines long) : style 2-clef t to the middle. — Parad. Lond. t. 32 ; Pursh, 

 1. c. ; Griseb. in DC. 1. c. 49; Chapm. Fl. 354. Chironia gracilis, Michx. 1. c. C. campanu- 

 lata, L. Spec. 190?, but not from "Canada." — Brackish marshes and river banks, Nan- 

 tucket (an ambiguous form), and New Jersey to Florida and Louisiana, extendmg inland to 

 the mountains of Georgia. (Cuba.) 



Var. grandiflora. Stem more rigid and erect: lower leaves fleshy: flower much 

 larger; the corolla-lobes from three-fourths to nearly a full inch long. — Coast of E. Flor- 

 ida, Leavenworth, Buckley, Palmer, &c. 



S. Elliottii, Steud. Effusely and paniculately much branched, a foot or two high: 

 leaves small ; the lower cauline (half inch or less long) thickish, from obovate to lanceo- 

 late; upper narrowly linear and rather longer; those of the filiform flowering branches 

 setaceous-subulate : flowers numerous : lobes of the calyx slender-subulate, about twice 

 the length of the tube, very much shorter than the spatulate-oblong or oblanceolate lobes 

 of the (apparently always white) corolla; the corolla-lobes only 5 or 6 lines long: style 

 2-parted. — Chapm. Fl. 534. S. paniculata. Ell. Sk. i. 282 (ex char.), not Pursh. Swertia 

 difformis, L. Spec. i. 226 ? — Pine barrens on the coast (S. Virginia ? ) S. Carolina to Florida. 

 (Bahamas.) 



§ 2. Flowers 8-12-merous, most commonly 9-11-merous, large and showy, 

 * Solitary on naked somewhat paniculate peduncles : anthers at length coiled into a helix. 



S. chloroides, Pursh. Stem a foot or two high, loosely and sparingly branched above : 

 leaves oblong-lanceolate, or the lowest oblong-spatulate and the uppermost linear : calyx- 

 lobes subulate-linear, about half the length the spatulate-obovate lobes of the (rose-purple 

 or sometimes white) corolla : divisions of the deeply-cleft style linear-clavate. — Torr. Fl. 

 N. Y. ii. t. 84. Chironia dodecandra, L. Spec. i. 190 ; Walt. 1. c. Chlora dodecandra, L. 

 Syst. Chironia chloroides, Michx. Fl. i. 147. — Margin of pine-barren ponds along the coast, 

 Massachusetts to Florida and Alabama. Corolla about 2 inches in diameter. 



Var. stricta. Stem more rigid, 1-few-flowered : leaves all linear. — Chironia decandra, 

 Walt. I. c. ? — S. Carolina ? Alabama, and Florida. 



* Capitate-clustered or sometimes solitary flowers sessile and leafy-bracted : calyx-tube turbhiate : 

 anthers of firm texture, slightly curved. — Lnpithea,Gvi»&\). 



S. gentianoides, Ell. Stem strict, a foot or two high : radical leaves in a rosulate tuft, 

 obovate or oblong : cauline very narrowly linear, 1^ to 3 inches long, a line or two wide ; 



1 the uppermost involucrating the terminal cluster of 3 to 5 or sometimes one or two nearly 

 sessile flowers ; occasionally one or two in lower axils : calyx-lobes lanceolate-subulate, very 

 much shorter than the spatulate corolla-lobes, these 6 to 10 lines long : style 2-clef t at the 

 apex, the lobes spatulate. — Sk. i. 286 ; Chapm. Fl. 354. S. oligophylla, Featherman in Univ. 

 Mississip. Rep. 1871. Lapithea gentianoides, Griseb. in DC. 1. c. 48. — Margin of pine-barren 

 ponds, Georgia and Florida to Texas. 



