536 Ordeu 95.-— GENTIAN ACE/E. 



8 G-. Saponiria L. St. ascendiug or erect, smooVi; fls. clustered at the- summit 

 and often in the axils ; Its. ovate-lanceolate to lance-obovate, acutish, rough- 

 margined, narrowed to the subclasping base ; cal. segm. lance-linear or spatulate r 

 about equaling the tube, half as long as the corolla; cor. bright blue, lobes conni- 

 vent, ovate, open, twice (more or less) longer than the cleft folds. — Va. to Ga. and 

 La. St. & to 18' high, slender or rather stout. Lvs. 1 to 2 to 3' long. Cor. IS" 

 to 2' long. Cal. segm. varying from lance-linear to lance-obovato ! Aug., Sept. 



/?. LINEARIS. St. slender, ascending; lvs. linear and lance-linear,, rigid; caL 

 segm. mostly linear ; cor. folds very short. — Can. to Car. and Ky. A common 

 form, so peculiar that wo might as well perhaps regard it as a species. (G. 

 Pneumonantho Ik.) 



9 G. puberula Mx. St. erect or ascending, slender, rough, scarcely puberulent p 

 fii clustered, rarely solitary ; lvg. ovate and ovate-lanceolate, half-clasping, very 

 rough-edged, acute, short but longer than the internodes ; cal. segm. laneeolato, 

 about as long as its tube, half as long as the subcampanulate, brig-lit blue corolla ; 

 cor. subfunnel-form, lobes acute, thrice longer than the cleft folds. — W. and S- 

 States. Plant 10 to 18' high, very leafy and scabrous. Lvs. 9 7 ' to 20" long. 

 Fls. 15" long. It varies with leaves linear-lanceolate and less rough. (G. Cates- 

 basi Ell.) 



4. BARTCTN IA, Muhl. (Centaurclla Mx.) Screwstem. (Dedi- 

 cated in 1801, by Dr. Muhlenburg, to Ben]. F. Barton, Prof, of Bot- 

 any, Philadelphia.) Flowers 4-merous ; sepals appressed ; corolla sub- 

 campanulate ; petals slightly united, nearly erect ; stigma thick, gland- 

 ulous, somewhat bifid ; capsule 1-cellcd, 2-valved, invested by tbe per- 

 manent calyx and corolla; seeds very numerous and minute — 1-i N. 

 American, slender, erect herbs,, with scale-like lvs.. and small white fls. 



1 B. verna Muhl. St. short, simple ; ped. 1-flowered, the lower much longer, often 

 alternate; cor. segm. spatulatc, obtuse, thrice longer than the calyx; ova. conical^ 

 tipped with the distinct stylo. Bogs, Ya. to Ga. Sts. 3- to &' high, clustered. 

 Scale3 1" Jong, as in tho other, the fls. white, 3" long. March. 



2 B. tenella Muhl. St. branching above, branches subdivided; lvs. subulate, 

 minute; pan. erect, many flowered ; pedicels subequal ; sep. distinct, a third shorter 

 than the corolla; ova. ovate, sty. almost 0. — A slender and nearly naked plant, S 

 to 8' high, of a yellowish-green color, in wet ground's, Mass. to Ga. St. square,, 

 often twisted, with very minute, bract-like leaves, which are mostly opposite. 

 Ped. simple or branched. Pedicels bracteate at base, 2 to 3" to 5" in length. 

 Cal. segm. linear-lanceolate, aeuto. Cor. white, small, I-J-" long. Aug. 



/3. braciiiata. Branches and pedicels elongated, decurved, i. ft, outwards and 

 upwards, and often alternate ; cor. more open, lobes very acute, twice longer 

 than the ealyx. — Southward (B. Mosori Steud.). 



5. FRA'SERA, Walt. Colombo. (In honor of John Frasci\ an 

 American cultivator of exotics.) Flowers mostly tctramcrous \ petals 

 united at base, oval, spreading, deciduous,, each with I or 2 bearded, or- 

 bicular glands in the middle * stylo 1 ; stigmas 2 % distinct ; capsule 

 compressed, 1-celled ; seeds few, imbricate, large, elliptic, margined. 

 - — 2X Showy and tall, with opposite or vcrticillate leaves. 



F. Carolinensis Walt. St. tall, erect, glabrous, branched above; lvs. oblong,, 

 lanceola te, acutisb, sessile, feather-veined, entire or wavy ; paniclo compound, 

 pyramidal, leafy, verticillato ; cal. segments acute, shorter than the oblong, obtus- 

 ish petals ; gland solitary, oval-orbicular. — Moist woods, Western N. Y n Wis. and 

 S. Car. Stem dark purple, 4 — 7 — 9f! high, perfectly straight, ] — 2' thick at 

 base. Leaves smooth, subcarnous, 3 — 12' by 1 — 3', in whorls of 4 — G, rarely 

 opposite. Petals greenish, with blue dots and a largo purple gland near the baso. 

 June, July. — Highly valued as a tonic. 



6. H ALEXIA, Borkh. Felwort. (Derivation unknown.) Flowers 

 tctramcrous ; corolla short-campanulate y petals- spurred at base, with 



