TAXONOMY 



347 



which proceeds until, when plant is in fruit, there are formed 10 cavi- 

 ties each enclosing a seed. Seeds, anatropous, mucilaginous, flat- 

 tened, containing a large embryo and slight albumen. 



Official drug Part used Botanical name Habitat 



Linum Seeds Linum usitatissimum } Temperate 



Oeum Lini Fixed oil Linum usitatissimum / regions 



FIG. 204. Flax. A, floral diagram c, calyx; co, corolla; s, stamens; p, pistil. 

 B, median lengthwise section of flower. C, calyx and corolla removed. D, 

 fruit, external view. E, cross-section of fruit. (Robbins.) 



Erythroxylaceo3 or Coca Family. Shrubs (Erythroxylon) or trees 

 with alternate, simple, entire, glabrous and pinnately veined leaves. 

 Flowers regular, hermaphroditic, each with five sepals, five hypogy- 

 nous petals, ten stamens and a two- to three-celled ovary subtend- 



