116 PLANT ANATOMY. 
Secondary form: slightly roundish granules, having a form 
intermediate between the two preceding. 
6. Maize Starcu (Zea Mays, Figs. 48 and 49) presents only 
typical forms. 
(a) Horn endosperm (Fig. 49): sharply angular granules, 
Fie. 47.—Wheat starch; v, face view ; s, marginal view ; t, parts of adouble granule ; 
r, & granule of rye starch with a three-rayed cleft (Tschirch). 
without distinct stratification, and mostly provided with a 
Fie, 48, Fie. 49. 
Fie. 48,—Maize starch granules from the farinaceous endosperm (Tschirch), 
Fie, 49.—Maize starch from the horn endosperm (Tschirch), 
cleft ; they are in close contact with each other, and completely 
fill the cell. Inthe flour also, several granules are often still 
coherent. 
