TAXONOMY 
35 1 
Fruit an akene from inferior ovary crowned by a persistent ex- 
panded pappose calyx rudiment. Seeds anatropous, exalbuminous. 
Official drug Part used Botanical origin Habitat 
Valeriana Rhizome and Valeriana officinalis Europe and Asia 
roots 
Composites ( Asteracece ) or Daisy Family. — Herbs, rarely shrubs or 
trees, of annual or perennial habit, and with watery or milky juice. 
Fig. 192. — Capitulum of a composite Jerusalem artichoke ( Helianthus 
tuberosus). A, lengthwise section of capitulum, X 1 ; B, ray flower, X 6; C, disk 
flower, cut lengthwise, X 6. (A after Baillon, B and C, Robbins .) 
Inulin is present in cell sap of parenchyma. Leaves alternate, rarely 
opposite, simple to compound, exstipulate. Inflorescence a capitu- 
lum or a raceme of capitula, each capitulum surrounded by an in- 
