Dicotyledons with Polypetalous Flowers . 
47 
Ovary in Bryony separated from the limb of the calyx by a deep constriction; placentas fleshy, 3, infolded to 
the centre of the ovary, then reflected to near the periphery. 
Seeds exalbuminous. 
USES, &c.—This important Order is generally characterised by much acridity, which, however, in the fruits of 
the numerous species under cultivation, is diffused or wholly wanting. Amongst edible Cucurbitacese are the 
Cucumber ( Gucumis sativus), Melon ( G . melo ), Water Melon ( Gitrullus vulgaris), the infinite variety of Gourds and 
Pumpkin {Cucurbita maxima and allies), and Vegetable Marrow ( G . Pepo). After removal of the pulp, the shell-like 
outer layer of the fruit of Lagenaria f which is most variable in size and form, serves for water-vessels, domestic 
utensils, drums, and innumerable other purposes. Colocynth, the fruit of Gitrullus Colocynthis y is intensely bitter and 
poisonous. It is employed medicinally, as was formerly Elaterium, prepared from the fruit of the Squirting Cucumber 
(Momordica Elaterium ). The latter plant takes its name from the mode in which the seeds are discharged by the 
ripe fruit. On separating from the stalk the elastic sides of the fruit collapse and expel the contained pulp with 
considerable force. 
Natural Order 
passifloret;. Tab. 39 . 
Diagnosis. — Stem usually climbing, with alternate leaves and axillary 
tendrils. Flowers regular. Calyx-tube fringed within. Stamens usually 
4-5. Ovary free, i-celled with parietal placentas. 
Distribution. —A small extra-European Natural Order, almost wholly confined to Tropical and 
Subtropical regions ; common to both Hemispheres, though by far the larger proprortion of the largest 
and typical genus Passion-flower (Passiflora) belongs to the New World. Of the remaining seventeen 
genera ten are peculiar to Africa and its islands. 
