GENTIANACE.E. (GENTIAN FAMILY.) 343 



flowered, forming an oblong panicle ; calyx-lobes | or J shorter than the corol- 

 la. (S. concinna, Wood, ex. char.) — Dryish grassy places, Virginia, Indiana 

 ( Wood), and southward. June -Aug. — Corolla 1'- 1.^' I >road; the lobes nar- 

 rower than in the next. 



4. S. ailgulsiris, Pursh. Stem somewhat 4-icinged-angled, much branched 

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

 8omewluit heart-shaped clasping base ; calyx-lobes J to i the length of the corolla. 

 —Dry river-banks, &c, New York to Illinois and southward. July, Aug. — 

 Corolla 1^' wide, deep rose-purple; the lobes obovate. 



** ++ Erect or soon diffuse, loosely branched; the branches alternate or forking (stems 

 terete or slightly 4-augled) : peduncles elongated and 1 -flowered. 



5. S. calycdsa, Pursh. Diffusely forking (£°-l° high), pale; leaves 

 oblong or lance-oblong, narrowed at the base (lJ-'-2' long); calyx-lobes foliaceous, 

 spalulate-lanceolate (§'-1' long), exceeding the almost white corolla. — Marshes, 

 coast of Virginia, and southward. June- Sept. 



6. S. Stellftris, Pursh. Loosely branched and forking (5'-l5' high); 



leaves oblong- or ovate-lanceolate, or the upper linear; calyx-loins awl-shaped-linedr, 

 varying from half to nearly the length of the bright rose-purple corolla* — Salt marsh- 

 es, Massachusetts to Virginia, and southward. July -Sept. — This may run 

 into the next. 



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

 (l°-2° high) ; the branches and long peduncles filiform; leaves linear, or the 

 lower lance-linear, the uppermost similar to the setaceous calyx-Mies, which equal the 

 rose-purple corolla. (Chironia campanulata, L.) — Brackish marshes and river- 

 banks, New Jersey (Burlington, Mr. Coohy) to Virginia, and southward. 

 June - Sept. 



** Corolla 9- \2-parted, large (eibout 2' broad). (Lapithea, Griseb.) 



8. S. Cllloi'Oldes, Pursh. Stem nearly round (l°-2° high), loosely 

 panicled above; the peduncles slender, 1-flowered; leaves oblong-lanceolate; 

 calyx-lobes linear, half the length of the deep rose-colored (rarely white) corol- 

 la. — Borders of brackish ponds, Plymouth, Massachusetts, to Virginia, and 

 southward. July - Sept. — One of our handsomest plants. 



2. ERYTHRiEA, Pers. Centaury. 



Calyx 4 - 5-parted, the divisions slender. Corolla funnel-form or salver-form, 

 with a slender tube and a 4 - 5-parted limb, which in withering twists on the 

 pod. Anthers exserted, erect, twisting spirally. Style slender, single : stigma 

 capitate or 2-lipped. — Low and small branching annuals, chiefly with rose- 

 purple or reddish flowers ; whence the name, from epvdpos, red. (All our 

 Northern species were probably introduced from Europe, and occur only in a 

 few localities.) 



1. E. Centaurium, Pers. (Centaury.) Stem upright, corymboscly branched 

 above; leaves oblong or elliptical, acutish; the uppermost linear; cymes clus- 

 tered, flat-topped, the floivers all nearly sessile ; tube of the (purple-rose-colored) 



