620 GENTIANACEAE. [Vour. II. 
1. Tetragonanthus defléxus (J. E. Smith) 
Kuntze. Spurred Gentian. (Fig. 2885.) 
Swertia deflexaJ. E. Smith in Rees’ Cyclop. no. 8. 1816. 
sir ky ii Griseb. in Hook. Fl. Bor. Am. 2: 67. 
Pl. 155. 1834, 
sii cca deflexus Kuntze, Rev. Gen. Pl. 431. 
I 
Annual; stem simple or branched, slender, erect, 
6’-20’ high. Basal leaves obovate or spatulate, ob- 
tuse, narrowed into petioles; stem-leaves ovate or 
lanceolate, acute, sessile, 3-5-nerved, 1/-2’ long, 
the uppermost much smaller; calyx-segments lan- 
ceolate or spatulate, acute or acuminate; corolla 
purplish or white, about 4/” high, its lobes ovate, 
acute, the spurs deflexed or descending, one-fourth 
to one-half the length of the corolla; capsule nar- 
rowly oblong, 6’’-7’’ long, about twice as long as 
the calyx. 
In moist woods and thickets, Labrador to Massachu- 
setts and southern New York, west to Michigan and 
the Indian Territory. July-Aug. 
Mohsen defléxus Brentonianus (Griseb.) Britton, Mem. Torr, Club, 5: 261. 1804. 
Halenia Br rentoniana Griseb. in Hook. Fl. Bor. Am. 2:68. 1834. 
Low, 3/-8’ high; spurs shorter and thicker. Newfoundland to Anticosti. 
8. OBOLARIA L. Sp. Pl. 632. 1753. 
A low glabrous perennial herb, the stem simple or branched, the lower leaves reduced 
to opposite scales, the upper foliaceous, subtending the racemose-spicate or thyrsoid white 
or purplish flowers. Calyx of 2 spatulate sepals. Corolla oblong-campanulate, 4-cleft, the 
lobes imbricated, at least in the bud. Stamens 4, inserted in the sinuses of the corolla; fila- 
ments slightly longer than the ovate sagittate anthers. Ovary 1-celled, with 4 internal 
placental projections; ovules numerous; style distinct; stigma 2-lamellate. Capsule ovoid, 
2-valved or irregularly bursting. Seeds minute, covering the whole interior of the capsule. 
[Greek, obolus, a coin, alluding to the thick round leaves. ] 7 
A monotypic genus of eastern North America. 
1. Obolaria Virginica L. Pennywort. 
(Fig. 2886.) 
Obolaria Virginica I,. Sp. Pl. 632. 1753. 
Stems 3/-6’ high from a perennial root of thick fleshy 
fibres, bearing 2-6 pairs of thick small obtuse scales in 
place of leaves. Floral leaves broadly obovate-cuneate, 
obtuse, purplish, 4’’-6’’ long; flowers sessile or nearly so 
in the axils, in clusters of 1-4 (usually 3), and terminal; 
corolla about 5’’ long, cleft to about the middle, the 
lobes oblong, obtuse, entire, or denticulate; stamens in- 
cluded; capsule 214’’ long. 
In rich woods and thickets, New Jersey to Georgia, west to 
Illinoisand Texas. Ascends to 2600 ft. in Virginia. April-May. 
Q. BARTONIA Muhl.; Willd. Neue Schrift. Ges. Nat. Fr. Berlin, 3: 444. 1801. 
Slender or filiform erect glabrous annual or biennial herbs, the leaves reduced to min- 
ute opposite subulate scales, or some of them alternate, and small white or yellowish race- 
mose or paniculate flowers, or these rarely solitary and terminal. Calyx deeply 4-parted, 
the segments lanceolate, acuminate, keeled. Corolla campanulate, deeply 4-cleft, the lobes 
imbricated in the bud. Stamens 4, inserted at the sinuses of corolla; filaments slender, 
much longer than the ovate sagittate anthers. Ovary I-celled, the placentae intruded; 
ovules numerous; style very short or none; stigma 2-lobed. Capsule ovoid-oblong, acute, 
2-valved. Seeds minute, covering the whole inner surface of the capsule. [In honor of 
Professor Benjamin Smith Barton, 1766-1815, of Philadelphia. ] 
Two species, natives of eastern North America. 
Corolla yellowish, 1%4'’-2"' long, its lobes oblong. 
I ‘trginica. 
Corolla white, 3'’-4'’ long, its lobes spatulate. 2. 
erna, 
bbs 
84 
