scorpioid cymes by the development of the bud of the 2nd bracteole. In _Parietaria_ they are more pressed together, and the floral-leaves at the same time are also raised on their axillary shoots to just beneath the flower. As a rule, not only in this order but also in those related to it, a small vegetative branch is situated in the axil of the foliage-leaf, and this bears an inflorescence on each side at its base.~ _Urtica_ (Nettle) has opposite leaves with distinct stipules and stinging hairs. The perianth-leaves of the ♀-flower are free (Fig. 340).--_Parietaria_ (Pellitory) has scattered leaves without large stipules, and stinging hairs are absent. The ♀-perianth is 4-toothed, flask- or bell-shaped.--~_Pilea_ is a tropical genus with trimerous, zygomorphic ♀-flowers, the posterior perianth-leaf being much larger than the two others, and more or less hood shaped.--The flower of _Forskohlea_ is the most reduced; the ♂-flower has only one stamen, and the ♀-as well as the ♂-flowers have a one-sided, tongue like perianth (?). _Pouzolzia._~ [Illustration: FIG. 340.--Diagram of ♂-and ♀-flowers of _Urtica dioica_.] [Illustration: FIG. 341.--_Parietaria diffusa_; hermaphrodite flower: _a_ in the female, _b_ at the commencement of the male stage; the stigma has fallen off, but the anthers have not yet dehisced.] WIND-POLLINATED. The pollen is shot out of the anthers, when they spring forward, and is caught by long stigmatic hairs. _Parietaria diffusa_ is protogynous (Fig. 341). 500 species; chiefly in the Tropics, although the few species which occur in Europe are represented by a much larger number of individuals.--USES. The bast of the native species _Urtica dioica_ and _urens_, of _U. cannabina_ (Siberia), etc.; of _Boehmeria nivea_ “Ramié” and “China-grass” (from Sunda Is., China), and others, is used in the manufacture of muslin. Order 3. =Moraceæ= (=Mulberries=). Nearly all trees or shrubs, seldom herbs, generally with latex. The leaves are scattered, and not infrequently lobed. The flowers are _unisexual_ (monœcious or diœcious) and arranged in catkin- or capitulum-like, compound inflorescences. Perianth-leaves 2–6, generally 4, with an equal number of stamens opposite to them, as in the Nettles. The ovary is 1–seldom 2-locular, and has 2 stigmas (it is thus formed from 2 carpels) seldom only one style with one stigma. One ovule in each loculus, more or less curved, and _pendulous_; micropyle directed upwards. Fruit usually a drupe. The embryo is generally curved inside the _fleshy endosperm_, or it is exendospermous. [Illustration: FIG. 342.--_Morus alba_ ♂ flower (6/1).] [Illustration: FIG. 343.-_Morus alba_ ♀ inflorescence.] [Illustration: FIG. 344.--_Morus nigra_ fruits.]