DICOTYLEDONOUS PLANTS. 45 
corolla, alternating with them, and inserted upon the corolla- 
tube. Ovary usually 2-celled. Style single or somewhat 
divided. Flowers always perfect, frequently dimorphous (as 
in Houstonia, Mitchella, and Bouvardia). Mainly a tropical 
family, including many important trees. 
I. HOUSTONIA, BLUETS. 
Calyx 4-lobed, persistent. Corolla salver-shaped or funnel- 
shaped. Stamens 4, inserted on the corolla. Style 1; stigmas 
2. Ovary 2-celled. Capsule often 2-lobed, its upper portion 
projecting from the calyx-tube and unconnected with it. Seeds 
few-several in each cell. Flowers dimorphous. 
(H. cazruLea), Biruets, INNOCENCE, QUAKER LApiIEs, EYE- 
BRIGHT. A delicate, smooth herb, with slender, erect, forking stems 
3—5 in. high, from thread-like rootstocks; leaves ovate-spatulate or 
oblong-spatulate, about 1 in. long; peduncle erect and thread-like, 
1 or 2-flowered; corolla sky-blue, varying to lavender or whitish, 
with a yellow eye ; tube long and narrow; pod broad and somewhat 
2-lobed. Perennial. 
II. MITCHELLA, PARTRIDGE BERRY. 
Flowers growing in pairs, joined by their ovaries. Calyx 
4-toothed. Corolla funnel-shaped, with the lobes bearded 
within. Stamens 4, short. Style 1, stigmas 4, slender. 
Fruit double, composed of the united ovaries, berry-like, but 
really a stone-fruit containing 8 seed-like bony nutlets. A 
pretty trailing evergreen herb, with roundish-ovate, petioled 
leaves, fragrant white or pinkish dimorphous flowers, and 
tasteless scarlet berries which cling to the plant through the 
winter. 
(M. REPENS), PARTRIDGE Berry, Squaw VINE, Two-£YE Berry, 
Common in dry woods, especially under evergreen coniferous trees. 
Ill. BOUVARDIA. 
Calyx 4-lobed, the divisions slender. Corolla with a long 
and narrow or rather trumpet-shaped tube and spreading 
4-lobed limb. Anthers 4, inserted in the throat of the 
