. Elementary botany [microform]. Botany; Botanique. ^— 11 15^ DICOTYLEDONS. Fig. 190.—Floral diagram of Solanuvt. m Type : NIGHTSHADE {Sohinum nigrum). Vegetative characters.—Annual herb. Leaves exstipulate alternate, but near the flowering portion of the stem the ft leaves are seemingly arranged in pairs of one large leaf and one smaller one at a node. The branch- ing is really cymose, and each in- florescence appears to spring from the side of the stem, yet not to arise in the axil of a leaf.* Inflorescence cymose; note that no prophylls are visible on the flower-stalks. Flower (fig. 84) act
. Elementary botany [microform]. Botany; Botanique. ^— 11 15^ DICOTYLEDONS. Fig. 190.—Floral diagram of Solanuvt. m Type : NIGHTSHADE {Sohinum nigrum). Vegetative characters.—Annual herb. Leaves exstipulate alternate, but near the flowering portion of the stem the ft leaves are seemingly arranged in pairs of one large leaf and one smaller one at a node. The branch- ing is really cymose, and each in- florescence appears to spring from the side of the stem, yet not to arise in the axil of a leaf.* Inflorescence cymose; note that no prophylls are visible on the flower-stalks. Flower (fig. 84) actinomorphic, 5, cyclic hypogynous. Sepals {ex) five com- bined. Petals {co) five, combined. Stamens (a) five, alternating with „ , , , t^e five petals and inserted on the corolla-tube; the anthers are close together in the centre of the flower, each opening by two pores at its summit Carpeis two, syncarpous, superior. Ovary {ov) two-chambered with many ovules on a thick axile placenta. Style one. Stigmi {sg) one. [Try and see that the two carpels are not median or transverse in position, but are oblique.] Pollination —The flower has^no nectary but is visited for the sake of its pollen. Fruit a berry. Seeds kidney - shaped. In spite of their being poisonous, the berries are eaten bv the seeds """"'^^"^"^^^ ^'^ responsible for the dispersal of The Potato-plant {Solanum tuberosum) has flowers so similar to those of the Nightshade that they may'be selectTfor examt ation in place of the latter. The plant is a perennial with subterranean tuberous shoots. The unequal size of the leaflets composing a leaf is specially worthy of note (fig. 48). USES, PECULIARITIES, etc. of Solanace^. Many Solanacete contain powerful poisons, some of which are used as medicines. Belladonna is obtained from Atropa * This chararfcristic method of branching, and the neculiar mirpH arrangement of the leaves, cannot be explained in this book? ^. Please no
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