48 NATURAL ORDERS AND 
enveloped in mucus, ascending. Embryo straight, in the axis of 
horny albumen. Radicle inferior. Cotyledons elliptic, foliaceous.— 
Herbaceous plants, with opposite, or occasionally alternate, compound, 
or simple leaves. 
GENERA. 
Corolla rotate, closed at the base by sta- 
miniferous valves ...... supavewenvas PoLEMoNIvM, V. 1. p. 260. 
ORDER LXVUI. CONVOLVULACE#.—Cuors. 
Perianth double. Calyx of five sepals, equal or unequal, per- 
sistent, remarkably imbricated, often becoming enlarged. Corolla 
monopetalous, hypogynous, regular, deciduous, limb five lobed, 
plaited. Stamens five, inserted into the base of the corolla, and 
alternate with its segments. Ovary single, two to four celled, some- 
times in two or four divisions. Disk annular, hypogynous. Style 
single, entire, or bifid. Stigma two lobed. Capsule two to four 
celled, the valves fitting at their edges to the angles of a loose dis- 
sepiment, bearing the seed at its base. Seeds with a small quantity 
of mucilaginous albumen, when single erect, when more than one in 
each cell collateral. Embryo curved. Cotyledons corrugated. Ra- 
dicle inferior.—Herbaceous plants or shrubs, usually twining. Leaves 
alternate, simple, or lobed, seldom pinnatifid, without stipules. Flowers 
axillary or terminal, peduncles one or many flowered, the partial ones 
generally with two bracts. 
GENERA. 
Stem leafless, parasitical ............00 see. Cuscura, v. 1. p. 840. 
Stem leafy, twining ......... scabaeete vane ws... CONVOLYULUS, V. 1. p. 261. 
ORDER LIX. BORAGINEZ.—Juss. 
Perianth double. Calyx five lobed, persistent. Corolla five lobed, 
generally regular, monopetalous, with an imbricated «stivation, the 
throat naked, or closed with fine scales. Stamens five, inserted into 
the corolla, and alternate with its lobes. Ovary two to four lobed. 
Style simple, persistent, arising from between the lobes of the ovary. 
Stigma simple, or bifid. Fruit two to four. Nuts one celled, single 
seeded. Seeds separable from the pericarps, without albumen. Em- 
bryo straight. Radicle inferior. Cotyledons foliaceous.—Herbaceous 
plants or shrubs, with alternate generally rough leaves, the asperities 
arising from an indurated enlarged base. Flowers mostly in onesided 
gyrate spikes or racemes, or panicles rarely solitary and axillary. 
