354 



DICOTYLEDONES. 



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 ; micro- 

 pyle directed upwards. Fruit usually a drupe. The embryo is 

 generally curved inside the fleshy endosperm, or it is exendospermous. 

 A. MOKE.S. The filaments are incurved in the bud. Leaves 

 folded in the bud -Morns (Mulberry) (Figs. 342-344). Monoecious. 

 The inflorescences are catkin-like in appearance, but in reality 

 composed of many small dichasia. The flowers are similar to those 

 of the IVettle, but with 2 carpels : in the < with perianth 2 + 2, 

 and stamens 2 + 2 (Fig. 342), in the ? , perianth 2 + 2, and 2 

 carpels in regular alternation. The small drupes are enveloped 

 by the perianth, ivhich eventually becomes fleshy, and as all the 

 flowers on the axis very accurately fit together, the collection of 



FIG. 342. Morns alba 

 <J flower (611). 



FIG. 343. Morns alba 

 $ inflorescence. 



FIG. 34!. .Moi-us nigra 

 fruits. 



fruits is formed, which we call a Mulberry (Fig. 344). The leaves 

 are folded in the buds, and have small stipules. The following are 

 allied to Morns : Madura, Bromsonetia (the Paper-mulberry tree) which has 

 spheroid ? inflorescences (made up of dichasia), etc. 



Dorstenia presents an interesting transitional form to the Fig in its flat, 

 open, and, in some instances, lobed inflorescence on which the $ and $ 

 flowers are sunk in grooves. Indications of a somewhat similar structure are 

 found in certain Nettles, the sympodial axes of the dichasia becoming flatly 

 expanded. The fruits are 1-seeded, but, nevertheless, spring open and eject 

 their seeds. 



B. AKTOCARPEJ:. Filaments straight in the bud ; foliage- 

 leaves with convolute vernation. An interpetiolar leaf-sheath 

 (ocrea) formed in the axil of each leaf by the connate stipules, 

 covers the younger leaves as a hood. It falls off as the leaf 

 expands, and leaves a ring-like scar on the stem. Ficns (the 

 Fig). The inflorescence (the so-called syconus) has a pear- 



