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GENTIANACEjE. (gentian family.) 
Synopsis. 
Suborder I. GENTIANE^E. The true Gentian Family. 
Lobes of the corolla twisted to the right in the bud, with the folds 
at the sinuses, when present, plaited. Leaves almost always opposite 
or whorled, entire, those of the stem sessile. Seed-coat cellular. 
* Style distinct and slender, deciduous. 
1. Sabbatia. Corolla wheel-shaped, 5 - 12-parted : anthers curved. 
2. Erythrjea. Corolla funnel-form, 4-5-cleft: anthers spiral. 
* * Style (if any) and stigmas persistent: anthers straight. 
■*- Corolla without glands or spurs. 
3. Bartonia. Corolla 4-parted ; no folds or fringes. Leaves minute. 
4. Gentiana. Corolla 5-4-lobed, with folds at the sinuses, or 
fringed on the throat or margins. 
•+- Corolla with a glandular spot on each lobe. 
5. Halenia. Corolla 4 - 5-cleft, bell-shaped, 4 -5-spurred. 
6. Frasera. Corolla 4-parted, wheel-shaped, regular; no spurs. 
Suborder II. MEN Y ANTHIDE jE. The Buckbean Fam. 
Lobes of the corolla valvate in the bud, with the edges turned in- 
wards. Stem-leaves alternate, petioled. Seed-coat hard or bony. 
7. Menyanthes. Corolla bearded inside. Leaves 3-foliolate. 
8. Limnanthemum. Corolla smooth above. Leaves simple, rounded. 
Suborder III. OBOLARIEiE. The Obolaria Family. 
Lobes of the corolla imbricated in the bud. Leaves opposite, ses¬ 
sile. Ovules covering the whole inner surface of the ovary ! 
9. Obolaria. Calyx 2-leaved. Corolla 4-cleft. 
Suborder I. GENTIANEiE. The true Gentian Family. 
1. SABBATIA, Adans. American Centaury* 
Calyx 5 - 12-parted, the divisions slender. Corolla 5 - Impart¬ 
ed, wheel-shaped. Stamens 5—12 : anthers recurved. Style 2 
parted, slender. — Biennials, with slender stems, and cymose-pan- 
icled handsome (white or rose-purple) flowers. (Dedicated to 
bati, an early Italian botanist.) 
* Corolla b-parted , or rarely 6-parted. 
■*" branches opposite : floicers strictly cymose : peduncles short. 
1. S. lanceolata, Torr. & Gr. Stem simple , obscurely 4- 
angled, bearing a flat-topped cyme; leaves varying from ovate to an 
ceolate , 3-nerved, acute, or the lower obtuse ; calyx-lobes setaceous* 
