ORDER 95. GENTIAN ACE^B. 535 



a Flowers solitary, terminal, blue or white ,No. 4 



a Flowers clustered, yellowish or cream-white Nos. 5, 6 



blue, never opening; the folds as long ;us segments No. 7 



opening ; the folds shorter than, segments Nos. 8, 9 



1 O. quinqueflora L. St. 4-angled, branching; Ivs. ovate-lanceolate, acute, 

 3-veiried ; fls. terminal and axillary, about in 5s, pedicellate ; cor. tubular-campan- 

 ulate, with 5 lanceolate, setaceously acuminate segments; cal. very short, segm. 

 subulate-linear. Woods and pastures Can. and U. S. Stem a foot high, smooth, 

 generally branched. Leaves 3 5-veined, half-clasping, acute, smooth. Fl? 

 small, on pedicels half an inch in, length. Corolla pale blue, 4 times as long as 

 the sepals. Sept., Oct. 



/?.. PARVIFLORA. Cal. enlarged, lobes foliaceous, lance-linear, half as long as 

 the smallish corolla. This variety prevails in the W. States. 



2 G. crinita Frcelich. BLUB FRINGED GENTIAN. St. terete, erect ; Ivs. lanceolate, 

 acute ; fls. tetramerous ; cor. segm. conspicuously fringe-ciliate. Not uncommon 

 in cool, low grounds, Can. to Car. Stem If high, round and smooth. Branches 

 long, with a slight curve at base, becoming erect and straight, each bearing a 

 single, large, erect flower at the leafless top. Leaves broadest at base, tapering 

 to the apex, 1 2' long and \ as wide. Calyx square, segm. acuminate, equaling 

 the tube of the corolla. Cor. of a bright bluish-purple, the segments obovate, 

 finely fringed at the margin. Aug. A beautiful and interesting plant. 



3 G. detonsa L. St nearly strict, simple or branched ; Ivs. linear and lance-linear, 

 the lowest rosulate, spatulate; ped. 1 -flowered, very long, subsolitary; cal. 4 ( 5)- 

 cleft, lobes ovate and lanceolate, nearly equaling the corolla ; cor. lobes roundish- 

 obtuse, ciliate at the sides, crenate at top, erect-spreading; stig. distinct. N. Y., 

 Wis. (Lapham) N. to Hudson's Bay. A fine species, with large blue flowers. 

 Stem a foot high. Leaves 1 2 J' by 1 3", tapering to an acute point. Pedun- 

 cles 4 7' long, each with a single large, erect, showy flower. Cor. 15 20" long, 

 obconic or bell-shaped, blue. 



4 G. angustifolia MX. St. erect, slender, 1-flowered ; fls. pedunculate ; Ivs. lin- 

 ear obtuse, smooth, the lower ones subcuneate ; cor. funnel-form, narrow, open, 

 5-cleft, twice as long as the calyx, lobes ovate-oblong, obtuse, twice as long as 

 the lacerate folds. U N. J. to Fla. in sandy fields. Stem a foot high. Lvs. 1' 

 long. Flower large, sky-blue, 20" long. Calyx deeply cleft, with linear segm. 

 Sept., Oct. A variety at the South (Quincy, Fla., Dr. Danalson) has white fls. 

 18'' long. 



5 G. ochroleilca Froel. Sts. nearly or quite smooth, simple, terete ; fls. sessile, 

 clustered at summit, rarely in one or two of the upper axils ; Ivs. oval-lanceolate, 

 the highest lanceolate, lowest ob ovate-lanceolate, all narrowed to the sessile base, 

 obscurely 3-nerved, rather acute ; cal. segm. lance-linear, a third longer than the 

 tube, nearly as long as the greenish-white, open corolla. Va. to Fla. frequent. Sts. 

 about If high. Lvs. much longer than the internodes. Cor. 2' long, with green 

 veins and purple stripes, lobes ovate, folds very short. Sept., Oct. 



6 G. alba Muhl. (Gray). Very smooth ; st. stout, erect ; fls. densely clustered 

 at the summit, solitary in one or two axils ; Ivs. ovate-lanceolate, or. lanceolate, 



- half clasping at the broad base, gradually acuminate, 3-veined ; cal. segm. ovate, 

 much shorter than its bell-shaped tube, 4 times shorter than the cream-white corolla. 

 Woods and prairies, Middle, W. and S. States. St. 1 to 2f high. Lvs. 3 to 4' by 

 1' to 18". Cor. 30" long, the ovate lobes much longer than the jagged appendage* 

 or folds; open but connivent Jl. Sept (G. ochroleuca Griseb. &c.) 



7 G. Andre wsii Griseb. CLOSED BLUE GENTIAN. Lvs. oval-lanceolate, 3-veined, 

 acute; fls. in whorled heads, sessile cor. ventricous, clavate-campanulate, closed 

 at top, 10-cleft, the inner segments plicate and fringed, equaling the exterior; cal 

 segm. ovate-oblong, many times shorter than the deep blue corolla, 1$. Brit. Am. 

 to Car. A handsome plant, conspicuous in meadows and by brook-sides. Stem 

 12 to 18' high, simple, erect, smooth, with opposite, smooth leaves, scabrous on 

 the margin, resembling those of the common Soapwort. Flowers erect, 18" long, 

 subsessile, inflated, so nearly closed at the top as to be easily mistaken for buds ; 

 and the young botanist waits in vain to see them expand. Sept., Oct. (G. Sap* 

 Cnaria, 2d. edit, &c.) 



