N. ORD.-CONVOLVULACE&. 123 
Tribe.—CONVOLVULEZ. 
GENUS—CONVOLVULUS,* LINN. 
SEX. SYST.—PENTANDRIA MONOGYNIA. 
CONVOLVULUS. 
BINDWEED., 
SYN.—CONVOLVULUS ARVENSIS, LINN. 
COM. NAMES.—BINDWEED; (FR.) LE LISERON; (GER.) DIE WINDE. 
A TINCTURE OF THE WHOLE PLANT CONVOLVULUS ARVENSIS, L. 
Description.—This low perennial attains a growth of from 2 to 5 feet. oot 
deeply and extensively creeping; s¢em nearly glabrous, procumbent or twining 
over surroundings ; eaves ovate-oblong, sagittate tending to hastate, entire, the 
basal auriculate lobes acute. /sflorescence axillary ; peduncles mostly 1-flowered 
flowers matinal, white tinged with rose; dracts remote from the flower, subulate. 
_Calyx naked at the base; sepals equal, rounded. Corolla about three-quarters 
of an inch long, open infundibuliform, more or less plicate at the sinuses and 
obscurely 5-notched. S/amens included; filaments dilated at the base. Ovary 
entire; style single, persistent; séigmas 2, filiform, mostly spreading or revolute. 
Fruit a 2-celled globose capsule. Seeds 2 in each cell; cotyledons broad, foliaceous. 
Convolvulacee.—This large and well-distinguished family of mostly tropical — : 
or subtropical plants, is represented in North America by 8 genera, containing in 
varieties. The order is composed of herbs or — 
all 73 species and 17 recognized r 
ine or trail. Leaves alternate, petioled (absent — 
shrubs with stems that generally tw 
in Cuscuta); stipules none. Jnflorescence tru 
or cymosely 3- many-flowered ; flowers regular and perfect, 5-merous or rarely 
-merous. Calyx persistent; sepads mostly distinct, imbricated. Corol/a with an 
entire or lobed limb. Gynxecium generally 2-carpelled. Stamens as many as the 
lobes of the corolla and inserted low upon its tube. /7yfogynous disk evident, 
annular. Ovary 2- to 6-celled; sty/e single, sometimes divided; stgma terminal 
or introrse. 
the testa; a/bumen mucilaginous, surroundi 
In this order our proven plants are: 
Scammonia, Linn.), whose root yields an irritant but | 
often given to children as an anthelmintic on account of the smallness of the 
requisite dose for purging; Jalap, the dried tubercules of the Mexican Exogonium SS 
Purga, Benth., is a certain, powerful, 
ng, or surrounded by, the embryo. 
The Oriental Scammony (Convolvulus 
_* From convolvulo, to en ee 
ly axillary, the peduncles 1-flowered 
Fruit capsular or fleshy ; seeds comparatively large; embryo filling ° : : 
but nearly tasteless purgative, — a 
and speedy drastic purgative used as above; _ wee 
