Vou. II] GENTIAN FAMILY. 621 
1. Bartonia Virginica (L.) B.S.P. Yellow Bartonia. (Fig. 2887.) 
Sagina Virginica \,. Sp. Pl. 128. 1753. 
B. tenella Willd. Neue Schrift. Ges. Nat. Fr. Berlin, 3: 445. 1801. 
Bartonia Virginica B.S.P. Prel. Cat. N. Y. 36. 1888. 
Stem rather stiff, almost filiform, 4/-15’ high, simple, or 
with few erect branches above, 5-angled, yellowish green, 
sometimes twisted. Subulate scales 1’//-2’’ long, appressed, 
the basal pairs close together, the upper distant; flowers 
mostly opposite, peduncled; pedicels ascending or erect, 2’/— 
6’ long; corolla greenish yellow, 14’/-2’’ long, its lobes ob- 
long, acutish or obtuse, somewhat exceeding the calyx; 
stamens included; ovary 4-sided; capsule about 1%’ long. 
In moist soil, Newfoundland to Florida, west to Michigan and 
Louisiana. July-Sept. 
it Bartonia Moseri (Steud. & Hochst.) Rob. & Schrenk, a plant 
very similar to this species, but with alternate leaf-scales and 
corolla twice as long as the calyx, reported to range from Louis- 
iana to Newfoundland, may perhaps be distinct, but it is little 
known. Plants of &. Virginica with alternate leaf-scales are 
sometimes collected with the typical opposite-scaled form. 
2. Bartonia vérna (Michx.) Muhl. White 
Bartonia. (Fig. 2888.) 
Centaurella verna Michx. F1. Bor. Am. 1:97. pl. 72. f. 1. 1803. 
Bartonia verna Muhl. Cat. 16. 1813. 
Stem thicker and less rigid than that of the preceding 
species, usually simple, 2’-15’ high, racemosely or corym- 
bosely 1-several-flowered. Bracts distant, appressed, some 
of them commonly alternate; flowers solitary at the ends of 
the elongated erect peduncles, 3/’-4/’ long; peduncles some- 
times 2’ long; corolla white, its lobes spatulate or obovate, 
obtuse, about 3 times the length of the calyx; ovary com- 
pressed; capsule about 24’’ high. 
In swamps, southern Virginia to Florida and Louisiana. 
March-—May. 
Family 16. MENYANTHACEAE G. Don, Gard. Dict. 4: 167. 1837. 
BUCKBEAN FAMILY. 
Perennial aquatic or marsh herbs, with basal or alternate entire crenate or 
3-foliolate leaves, and clustered regular perfect flowers. Calyx inferior, deeply 
5-parted, persistent. Corolla funnelform to rotate, 5-lobed or 5-cleft, the lobes 
induplicate-valvate, at least in the bud. Stamens 5, borne on the corolla, and 
alternate with its lobes; filaments mostly short; anther-sacs longitudinally de- 
hiscent; pollen-grains 3-angled. Ovary 1-celled, the 2 placentae sometimes 
intruded; style long, short or none. Fruit a capsule, or indehiscent. 
Five genera and about 35 species, widely distributed. 
Leaves 3-foliolate; swamp plant. 1. Menyanthes. 
Leaves simple, entire, cordate, floating. 2. Limnanthemum., 
1. MENYANTHES L, Sp. Pl.145. 1753. 
A perennial glabrous marsh herb, with creeping rootstocks, alternate long-petioled 
3-foliolate basal leaves, and white or purplish flowers, racemose or panicled on long lateral 
scapes or peduncles. Calyx 5-parted, the segments oblong or lanceolate. Corolla short- 
funnelform, 5-cleft, its lobes induplicate-valvate, fimbriate or bearded within, spreading. 
Stamens 5, inserted on the tube of the corolla; filaments filiform; anthers sagittate. Disk 
of 5 hypogynous glands. Ovary 1-celled; style subulate; stigma 2-lamellate. Capsule oval, 
indehiscent or finally rupturing. Seeds few, compressed-globose, shining. [Greek, perhaps 
month-flower; a name used by Theophrastus. ] 
A monotypic genus of the cooler parts of the northern hemisphere, 
