LOGANIACEAE. [Vor. Il. 
1. Cynoctonum Mitréola (L,.) Britton. 
Mitrewort. (Fig. 2849.) 
Ophiorhiza Mitreola 1, Sp. Pl. 150. 1753. 
Cynoctonum Mitreola Britton, Mem. Torr. Club, 5: 
258. 1894. 
Stem simple, or branched near the base, or 
sometimes also above, glabrous, slender, erect, 
terete, 1°-2° high. Leaves lanceolate or ovate, 
petioled, 1/-3’ long, 3/’-1’ wide, acute at both 
ends, glabrous; cymes terminal and often also in 
the upper axils, slender-peduncled, the divisions 
slender, simple or forked; flowers about 1’ broad, 
numerous, sessile or very nearly so; capsule 
deeply 2-lobed, compressed, the lobes at length 
widely diverging, acute, dehiscent by a slit in the 
ventral suture near the summit. 
In wet or moist soil, Virginia to Florida, Texas and 
Mexico. Also in the West Indies. June-Sept. 
4. POLYPREMUMAL,. Sp. Ply rrr 753; 
A glabrous diffusely branched annual herb, with opposite linear-subulate leaves, their 
bases connected by a stipular membrane, and small white flowers in terminal bracted 
cymes. Calyx deeply 4-parted (rarely 5-parted), the segments subulate, scarious-margined. 
Corolla campanulate, bearded in the throat, shorter than the calyx, 4-lobed (rarely 5-lobed), 
the lobes imbricated in the bud. Stamens 4 (rarely 5), inserted on the corolla, included; 
filaments short; anthers ovoid-globose. Ovules numerous in each cavity of the ovary, on 
oblong placentae; style short; stigma capitate or obscurely 2-lobed. Capsule globose-ovoid, 
slightly compressed, didymous, loculicidally 2-valved, the carpels at length septicidal. Seeds 
minute, smooth. [Greek, many-stemmed. ] 
A monotype, abundant in the warmer parts of America. 
1. Polypremum proctimbens |. Poly- 
premum. (Fig. 2850.) 
Polypremum procumbens I. Sp. Pl. 111. 1753. 
Stems tufted, somewhat rigid, 4-angled, spreading 
on the ground, ascending or erect, usually much 
branched, 2/-12’ long. Leaves narrowly linear, %4/- 
134’ long, %4’/-1’’ wide, acute, sessile, minutely rough- 
toothed on the margins, often with smaller ones fas- 
cicled in their axils; flowers solitary, sessile in the 
forks of the cymes and along their branches, leafy- 
bracted, the bracts similar to the upper leaves; corolla 
1’ or less long; capsule crustaceous, didymous, about 
1’’ in diameter, slightly 2-lobed, the lobes obtuse. 
In dry sandy soil, New Jersey and Pennsylvania to Flor- 
ida, Kentucky, the Indian Territory, Texas and Mexico. 
Also in the West Indies. Occurs in cultivated fields as a 
weed. Probably adventive in the North. May-Sept. 
Family 15. GENTIANACEAE Dumort. Anal. Fam. 20. 1829. 
GENTIAN FAMILY. 
Bitter mostly quite glabrous herbs, with opposite (rarely verticillate) ex- 
stipulate entire leaves, reduced to scales in Aartonza, and regular perfect flowers 
in terminal or axillary clusters, or solitary at the ends of the stem or branches. 
Calyx inferior, persistent, 4-12-lobed, -toothed or -divided (of 2 sepals in Oé- 
olaria), the lobes imbricated or not meeting in the bud. Corolla gamopetalous, 
funnelform, campanulate, club-shaped or rotate, often marcescent, 4—12-lobed 
or -parted, the lobes convolute or imbricated in the bud. Stamens as many as 
the lobes of the corolla, alternate with them, inserted on the tube or throat; an- 
thers 2-celled, longitudinally dehiscent; filaments filiform, or dilated at the base. 
Disk none, or inconspicuous. Ovary superior in our genera, 1-celled or partly 
2-celled; ovules numerous, anatropous or amphitropous; style simple, or none; 
