220 DIFFERENTIATION AND SPECIFICITY OF STARCHES. 



Abroma angushwi Linn. fil. (Sleradiacew.) Dry seed. Grains rounded-oval to oblong; sometimes 

 curved, or reniform, or triangular, rarely conical, often irregular; two-fifths to as broad as 

 long; the broader ones compressed; the narrower ones terete; no lamellse; frequently from 

 the narrow aspect a longitudinal slit is distinctly visible, and sometimes a small cavity 

 with radial fissures is found at the thickened end; eccentricity one-third and one-fourth. 

 Length 30,u, width 20ju. Compound grains of few components are present. Starch and 

 oil present. 



Wallheria indica Limi. {Sterculiacece.) Dry seed. Grains rounded-oval to elongated-oval, fre- 

 quently curved, reniform, or triangular, or even irregularly triangular or quatlrangular, 

 and a few tetrahedrons; two-fifths to almost as broad as long; the broader ones slightly 

 compressed, and usually with a longitudinal slit, the narrower ones terete and with a 

 channel-like furrow, also sometimes with several transverse or radial fissm-es; lamelliE rare, 

 or very delicate. Length about 30 to 35^, width 25fi. Some compound grains of few 

 components are present. 



Melochia pyramidata Linn. (Sterculiacece.) Dry seed. Grains rounded to elongated-oval, some- 

 times reniform or rounded triangular; the broader ones compressed to about half their width; 

 lamellae delicate, or none; from the narrow aspect a longitudinal slit is usually very distinct, 

 sometimes transverse fissures are also present. Length about 30 to 36/i, width about 15/x. 

 Some doulslets and triplets. 



Riedlea corchorifolia DC; Melochia corchorifolia Linn. (Sterculiacece.) Dry seed. Grains rounded- 

 oval to oblong; frequently curved, reniform, or triangular, very often somewhat irregular; 

 two-fifths to as broad as long, the broader ones slightly compressed; the smaller ones terete; 

 no lamellae; from the narrow aspect usually a clearly defined longitudinal slit, and occasion- 

 ally many transverse fissures. Length about 31^, width about 19m. 



Hermannia alihccefolia Linn. (Sterculiacece.) Dry seed. Grains rounded to oblong, sometimes coni- 

 cal or rounded-triangular, the longer ones one-third to one-half, the shorter ones half to as 

 broad as long; the broader ones compressed to over half their width, the smaller ones not 

 compressed; no lamellae; with a longitudinal slit somewhat more marked from the narrow 

 aspect. Length about 20yu, rarely 28/;. 



Hermannia nemorosa Eckl. (Sterculiacece.) Dry seed. Grains rounded to elongated-oval, at times 

 somewhat conical or triangular ; half to as broad as long; the broader ones slightly compressed; 

 no lamellae; a longitudinal slit is usually observed. Length about 18/i. 



Melhania didyma Eckl., Zeyh. (Sterculiacece.) Dry seed. Grains rounded-oval to elongated-oval, 

 frequently curved, reniform, triangular, rarely conical, often somewhat irregular; two-thirds 

 to as broad as long, the broader ones slightly compressed, the narrower ones terete; no lamellae; 

 from the narrow aspect usually a clearly defined longitudinal slit, and occasionally a single 

 transverse fissure, are observed. Length about 30 to 35/f, width 20 to 25/i. 



Melhania erthroxylon R. Br. (Sterculiacece.) Grains as in the preceding. 



Eriolcena species. (Sterculiacece.) Dry seed. Grains rounded-oval, oval, rarely elongated-oval, 

 many reniform or triangular, few conical, one-half or rarely two-fifths to as broad as long, 

 the broader ones slightly compressed; lamellae very delicate, or none; u.sually a longitudinal 

 slit, and sometimes single transverse fissures are present; at the thickened end a small cavity 

 from which radial fissures diverge; one-half to one-third eccentric. Length about 33/;, 

 width about 27/j. 



Visenia tomemtosa R. P. (Sterculiacece.) Dry seed. Grains rounded to oblong, some cm-ved, or 

 reniform, or triangular; one-half or rarely two-fifths to as broad as long; the broader ones 

 slightly compressed; no lamellae; usually \vith a longitudinal slit, sometimes with transverse 

 fissures. Length about 28^, width 20^. 



JEsculus hippocastamim Linn. (Sapindaceoe.) Fresh and dry cotyledons. Grains usually conical, 

 occasionally oval or triangular or angular; frequentlj- irregular obtuse angular forms; half 

 to as broad as long; lamella- and hilum indistinct, or delicate; thickened at the hilum end, 

 narrowed at the distal end, having a circular transverse section, or broadened and thinned 

 and angular (the width may thus exceed the length of the gTain); in dry grains there is 

 present a small cavity and 1 to 4 radial fissures, especially in the direction of the long axis; 

 eccentricity about one-seventh. Length 29/i, rarely 30/u. There are present a few semi- 

 compouiul and compound grains, each with 2 to 4 components. 



