114 GENTIAJSTACEiE. Sabbatia. 



§ 1. Flowers 5-merous (or only occasionally some of them 6-7-merous) : an- 

 thers from apically recurved to helicoid. 



* Branches all opposite : flowers corymbosely or paniculately cymose, short-pedicelled. 

 -1— Calyx very small, merely 5-toothed. 



S. macrophylla, Hook. Glaucous : stem simple, terete, 2 or 3 feet high : leaves rather 

 distant, thickish, nearly erect, ovate or ovate-lanceolate with cordate-clasping 3-5-nerved 

 base, acute or mucronate-acuminate (1 to 3 inches long) ; the uppermost reduced to small 

 subulate bracts : cymes flat-topped, naked and in a naked terminal corymb or compound 

 cyme : pedicels short and filiform : teeth of the small calyx subulate and shorter than the 

 tube : corolla white ; the lobes oblong, 3 or 4 lines long : style not cleft to the middle. — 

 Hook. Comp. to Bot. Mag. i. 171; G^lseb. in DC. 1. c. 50; Chapm. Fl. 353. — Wet pine bar- 

 rens, Georgia to Florida and Louisiana. 



-I— 4— Calyx with long and slender or linear lobes : stem more or less 4-angled. 

 ++ Corolla white, fading yellowish : style 2-parted, its divisions spatulate-linear. 



S. lanoeolata, Torr. & Gray. Stem simple, 2 or 3 feet high, bearing a terminal and 

 naked corymbose cyme : leaves much shorter than the internodes (an inch or so long), from 

 ovate to lanceolate, 3-5-nerved, the floral reduced to subulate bracts : pedicels mostly short 

 but slender : calyx-lobes almost filiform, more than half the length of the corolla : lobes 

 of the latter obovate-oblong, a third to half inch long. — Gray, Man. ed. 1, 356 ; Chapm. 

 Fl. 353. Chironia lanceolata, Walt. Car. 95. C. cymosa, Lam. 111. i. 479, therefore Sabbatia 

 cymosa, Don, Syst. C. paniculata, Michx. Fl. i. 146, partly. Sabbatia paniculata, var. latifolia, 

 Pursh, Fl. i. 138. S. corymbosa, Baldw. in Ell. Sk. i. 283. — Wet pine-barrens, New Jersey 

 to Florida. 



S. paniculata, Pursh. Stem a foot or two high, freely branching ; the branches cy- 

 mosely few-many-flowered and uppermost cymes corymbose : leaves from linear to lanceo- 

 late-oblong, obtuse ; the floral mostly linear and acute : pedicels very short to the central 

 flowers : calyx-lobes not more than half the length of the corolla : lobes of the latter 

 spatulate-oblong, 3 lines long. — Fl. 1. u. (var. angustifolia, & excl. syn. Swertia difformis, L.) ; 

 Gray, 1. c, not Ell. Chironia paniculata, Michx. 1. c. partly, and as to char. — Moist or dry 

 ground, Virginia to Florida. 

 ++ ++ Corolla rose-color, varying to white : style cleft to the middle, its lobes slightly clavate. 



S. brachiata, Ell. Stem slightly angled, a foot or two high : leaves from lanceolate- 

 oblong to linear, mostly obtuse, obscurely 3-nerved at base : inflorescence thyrsiform-pan- 

 iculate ; the lateral cymes naked-pedunculate and about 3-flowered : calyx-lobes narrowly 

 linear, shorter than or nearly equalling the light rose-color or nearly white corolla : lobes of 

 the latter obovate-oblong, half inch long. — Sk. i. 284 ; Chapm. 1. c. S. concinna, Wood, 

 Class-Book, 451. Chironia annularis, var. angustifolia, Michx. 1. c. — Dry or low grounds, 

 Indiana and N; Carolina to Louisiana and Florida. 



S. angularis, Pursh. Stem quadrangular with sharp angles, 2 feet high, paniculately 

 branched above ; the branches leafy : leaves cordate-ovate and clasping, 3-5-nerved : numer- 

 ous and crowded branches few-flowered, pyramidally or somewhat corymbosely cymose : 

 calyx-lobes linear, much shorter than the corolla : lobes of the latter deep rose-color, obo- 

 vate, fully half-inch long. — Ell. 1. c. ; Bigel. Med. t. 57; Bart. Med. t. 24; Torr. Fl. N. Y. 

 ii. t. 83. Chironia angularis, L. ; Michx. 1. c, var. latifolia. — Rich soil, W. Canada to Florida 

 and Louisiana. 



# # Branches alternate or the lower opposite : foliaceous calyx-lobes longer and hardly narrower 

 than the lobes of the corolla : flowers not rarely 6-7-merous :" style 2-parted. 



S. Calycosa, Pursh. Stem a span to a foot long, loosely branching : leaves from oblong 

 to broadly lanceolate, narrowed at base : peduncles scattered, 1-flowered, mostly elongated, 

 occasionally short : calyx-lobes from linear to spatulate, resembling upper leaves, half 

 inch or more long, not rarely double the length of the obovate-spatulate lobes of the rose- 

 colored or almost white corolla. — Bot. Mag. t. 1600. Chironia dichotoma, Walt. Car. 93. 

 C. calycosa, Michx. 1. c. Gentiana calycina, Lam. Diet. ii. 638. Sabbatia gracilis, var. Cubensis, 

 Griseb. PI. Wright. Cub. ii. 521. — Sea-coast and near it, Virginia to Texas. (Cuba.) 



# # # Branches alternate : calyx-lobes slender, seldom exceeding the obovate lobes of the corolla : 

 peduncles more or less elongated and scattered, naked, 1-flowered. 



