586 Obdkr 95.— GENTIANAOEiE. 



8 G. Saponaria L. St. ascending or erect, sinooth ; fls. clustered at the summit 

 and often in the axils ; Ivs. ovate-lanceolate to kuce-oboyate, acutiah, rough- 

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

 about equaling tlie 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 Gn. and 

 La. St. 8 to 18' high, slender or rather stout. Lvs. 1 to 2 to 3' long. Cor. 18" 

 to 2' long. Cal. segm. varying from lance-hnear to lance-obovate I Aug., Sept 



f}. 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 we might as well perhaps regard it as a species. (G. 

 Pneumonanthe Mx.) 



9 Gr. puberula Mx. Si. erect or ascending, slender, rough, scarcely puberulent; 

 fls. clustered, rarely solitary ; lvs. ovate and ovate-lanceolate, half-clasping, very 

 rough-edged, acute, short but longer than the iniernodes ; cal. segm. lanceolate, 

 about as long as its tube, half as long as the subcampanulate, bright 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. Lva. 9'' to 20" long. 

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

 bffli EIL) 



4. BARTO'NIA, Muhl. (Centaurella Mx.) Screwstem. (Dedi- 

 cated in 1801, by Dr. Muhlenburg, to £e7ij. F. Barton, Prof, of Bot^ 

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

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

 ulous, somewhat bifid ; capsule 1-celled, 2-valved, invested by the per- 

 manent calyx and corolla; seeds very numerous and minute. — li N. 

 American, slender, or^'„:. herbs, with scale-like lvs. and small white fls. 



1 B. v6rna Muhl. St. short, simple ; ped. 1-flowered, the lower much longer, oftan 

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

 tipped with tlie distinct style. Bogs, Va. to Ga. Sts. 3 to 5' high, clustered. 

 Scales 1" long, as in the other, the fls. white, 3" long. March. 



2 B. ten611a Muhl. St. branching above, branches subdivided ; lvs. subulate, 

 minute ; pan. erect, raany-flowered ; pedicels subegual; sep. distinct, a third shorter 

 than the coroUa; ova. ovate, sty. almost 0. — A slender and nearly naked plant, 5 

 to 8' high, of a yellowish-green color, in wet grounds, 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 lengfc. 

 Cal. segm. linear-lanceolate, acute. Cor. white, small, 1^" long. Aug. 



/?. BRACHIATA. Branches and pedicels elongated, decurved, i. e., outwards and 

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

 than the calyx. — Southward (B. Moseri Steud.). 



5. FRA^SERA, Walt. Columbo. (In honor of John Fraser, an 

 American cultivator of exotics.) Flowers mostly tetramerous ; petals 

 united at base, oval, spreading, deciduous, each with 1 or 2 bearded, or- 

 bicular glands in the middle ; style 1 ; stigmas 2, distinct ; capsule 

 compressed, 1-ceIled ; seeds few, imbricate, large, elliptio) margined. 

 — li Showy and tall, with opposite or verticillato leaves. 



F. Carolin^nsis "Walt. St tall, erect, glabrous, branched above ; lvs. oblong, 

 lanceolate, acutish, sessile, feather-veined, entire or wavy ; panicle compound, 

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

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



5. Car. Stem dark purple, 4 — 7 — 9fl high, perfectly straight, 1 — 2' thick at 

 base. Leaves smooth, subcamous, 3 — 12' by 1 — 3', in whorls of 4 — 6, rarely 

 opposite. Petals greenish, with blue dots and a large purple gland near the base. 

 June, July. — Highly valued as a tonic. 



6. HALE^KIA, Borkh. Felwort. (Derivation unknown.) Flowers 

 tetramerous ; corolla short-campanulate, petals spurred at base, with 



