210 POWDERED VEGETABLE DRUGS 



KEY TO THE IDENTIFICATION OF THE MORE IMPORTANT 



STARCHES 



HILI CENTRIC 



. . Individual granules largely polygonal in outline 



.... Aggregates present 



Aggregates elliptical or rounded 



Granules larger Oat 



Granules smaller Rice 



Aggregates not rounded, linear or small groups. Buckwheat 



.... Aggregates wanting, hili very distinct Corn 1 



. . Granules not polygonal, rounded or more or less irregular 

 .... Granules kidney-shaped, large fissured hili * 



Outline quite regular Bean 



Outline quite irregular 



Few or no aggregates or compound granules Pea 



.... Not kidney-shaped, rounded with facets Cassava 



Some compound granules, very irregular Acorn 



. . Granules distinctly round, very variable in size 



. . . .Larger granules showing occasional fissured hili Rye 



.... Hili indistinct, barely perceptible 



Granules smaller Barley 



Granules larger Wheat 



HILI EXCENTRIC 



. . Granules ovoid, pear-shaped to elongated 



.... One end truncately cut 



Truncate end abruptly tapering, hili indistinct Ginger 



Truncate end not tapering, large V-shaped hili Orris root 



.... Not truncate 



Hili usually at larger end, fissures Maranta 



Hili usually at smaller end, pin point 



Distinctly pear-shaped, lamellations very distinct 



One end with distinct projection Canna 



End projection usually wanting Potato 



Granules elongated and more or less curved 



Broad end more or less truncate Yam 



Broad end not truncate, irregular Banana 



Truncate narrower end with blunt tip Curcuma 



Bell-shape granules; some - compound granules Sweet potato 



. .Granules quite irregular as to shape and outline 



....Hili usually at broader end; many small granules Horse chestnut 



.... Large fissured hili Chestnut 



. . Granules showing facets 



.... Hili transversely fissured Sago 



Hili radiately fissured Sweet potato 



J The starch of broom corn, sorghum, of fox tail grass and of other grasses, is 

 similar to that of corn. The starch of darnel resembles that of rice. -In a general 

 way, the starch of related plants is similar as to form and structure. 



