GEXTIANACE^E. (GENTIAN FAMILY.) 3-13 



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

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

 ( Wood), and southward. June - Aug. Corolla 1' - !' broad ; the lobes nar- 

 rower than in the next. 



4. S. atlgulftl'lS, Pursh. Stem somewhat ^-winged-angled, much branched 

 above (l-2^ high), many-flowered; haves ovate, acutish, 5-nerved, with a 

 somewhat heart-shaped clasping base ; calyx-lobes J to ^ the length of the corolla. 

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

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



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

 terete or s/ic/litli/ 4-<.t>igled) : peduncles elongated and \-flowered. 



5. S. calycosa, Pursh. Diffusely forking (-l high), pale; leaves 

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

 spatalate-lanccolate ('-!' long), exceeding the almost white corolla. Marshes, 

 coast of Virginia, and southward. June -Sept. 



6. S. Stellf&ris, Pursh. Loosely branched and forking (5' -15' high); 

 leaves oblong- or ovate-lanceolate, or the upper linear ; calyx-lobes aid-shaped-linear, 

 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. gTticilflS, 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-lobes, which equal the 

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

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

 June - Sept. 



* * Corolla 9-12-parted, large (about 2' broad). (Lapithea, Griseb.) 



8. S. Cllloroides, 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. EKYTIIRJSA, 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 exscrted, 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.) 



I.E. CENT ATRIUM, Pers. (CENTAURY.) Stem upright, coryrnbosely branched 

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

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



