ations of
the Clergy_ (8vo, 1848); _Synodalia_, a Journal of Convocation,
commenced in 1852 (8vo); _The Chronicle of Convocation_, being a
record of the proceedings of the Convocation of Canterbury, commenced
in 1863 (8vo). (T. T.; T. A. I.)

FOOTNOTE:

[1] It had always been the practice, when the clergy voted their
subsidies in their convocation, for parliament to authorize the
collection of each subsidy by the same commissioners who collected
the parliamentary aid.

CONVOLVULACEAE, a botanical natural order belonging to the series
Tubiflorae of the sympetalous group of Dicotyledons. It contains about
40 genera with more than 1000 species, and is found in all parts of the
world except the coldest, but is especially well developed in tropical
Asia and tropical America. The most characteristic members of the order
are twining plants with generally smooth heart-shaped leaves and large
showy white or purple flowers, as, for instance, the greater bindweed of
English hedges, _Calystegia sepium_, and many species of the genus
_Ipomaea_, the largest of the order, including the "convolvulus major"
of gardens, and morning glory. The creeping or trailing type is a common
one, as in the English bindweed (_Convolvulus arvensis_), which has also
a tendency to climb, and _Calystegia Soldanella_, the sea-bindweed, the
long creeping stem of which forms a sand-binder on English seashores; a
widespread and efficient tropical sand-binder is _Ipomaea Pes-Caprae_.
One of the commonest tropical weeds, _Evolvulus alsinoides_, has
slender, long-trailing stems with small leaves and flowers. In hot dry
districts such as Arabia and north-east tropical Africa, genera have
been developed with a low, much-branched, dense, shrubby habit, with
small hairy leaves and very small flowers. An exceptional type in the
order is represented by _Humbertia_, a native of Madagascar, which forms
a large tree. The dodder (q.v.) is a genus (_Cuscuta_) of leafless
parasites with slender thread-like twining stems. The flowers stand
singly in the leaf-axils or form few or many flowered cymose
inflorescences; the flowers are sometimes crowded into small heads. The
bracts are usually scale-like, but sometimes foliaceous, as for instance
in _Calystegia_, where they are large and envelop the calyx.

The parts of the flower are in fives in calyx, corolla and stamens,
followed by two carpels which unite to form a superior ovary. The
s