Biology · Ch 9 — Morphology of Flowering Plants
Solanaceae
Solanaceae
Solanaceae — represented here by the Datura plant. Plants of this family are herbs, shrubs or small trees. Root: tap root system. Stem: erect, woody and branched, covered by hairy structures in some plants; in Potato, another member of this family, the stem is an underground tuber. Leaf: simple, arranged in alternate phyllotaxy, with reticulate venation. Inflorescence: cymose, of the solitary type. Flower: solitary, bisexual and actinomorphic. Calyx: five fused sepals (gamosepalous), arranged in valvate aestivation, and persistent (remaining after the corolla withers). Corolla: five fused petals (gamopetalous), arranged in twisted (contorted) aestivation. Androecium: five stamens, free from one another but adherent to (epipetalous on) the corolla. Gynoecium: bicarpellary and syncarpous; the ovary is bilocular and superior, with many ovules arranged in axile placentation on a swollen placen …
What this figure shows. A Datura plant habit sketch with a simple, alternately-arranged leaf, alongside a single actinomorphic flower with a fused, funnel-shaped corolla, and its spiny frui …