220 DIFFERENTIATION AND SPECIFICITY OF STARCHES. 



Abroma angustum Linn. fil. (Sterculiacew.) Dry seed. — Grains rounded-oval to oblong; sometimes 

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

 long; the broader ones compressetl; the narrower ones terete; no lamella?; frequently from 

 the narrow aspect a longitudinal slit is disthictly 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 2Qfi. Compound grains of few comjjonents are present. Starch and 

 oil j>resent. 



Wallheria indica Linn. {Sterculiacew.) Dry seed. — Grains rounded-oval to elongated-oval, fre- 

 quently curved, reniform, or triangular, or even irregidarly triangular or quadrangular, 

 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 fissures; lamellae rare, 

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

 components are present. 



Melochia pyramidata Linn. (SterculiacecB.) 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/^, width about 15/i. 

 Some doublets and triplets. 



Riedlea corchorifolia DC; Melochia corchorifolia Linn. {Sterculiacew.) 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 3V, width about IQ/x. 



Hermannia aUhwefolia Linn. {Sterculiacea;.) 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 20m, rarely 28/;. 



Hermannia ncmorosa 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 lamelkc; a longitudinal slit is usually observed. Length about 18/i. 



Alelhania didynia Eckl., Zeyh. {Sterculiacew.) 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, antl occasionally a single 

 transverse fissure, are observed. Length about 30 to 35yu, width 20 to 25^- 



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



Eriolwna species. {Sterculiacew.) 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; lamellte very delicate, or none; usually 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/i, 

 width about 27fi. 



Visenia tomemtosa R. P. {Sterculiacew.) Dry seed. — Grains rounded to oblong, some curved, or 

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

 slightly compressed; no lamellte; usually with a longitudinal slit, sometimes with transverse 

 fissures. Length about 28/^, width 20ju. 



/Escidus hippocastanum Linn. {Sapindacew.) Fresh and dry cotyledons. — Grains usually conical, 

 occasionally oval or triangular or angular; frequently irregular obtuse angular forms; half 

 to as broad as long; lamella; and hiluni 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 grain); in dry grains there is 

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

 eccentricity aljout one-seventh. Length 29tx, rarely 3t)/x. There are present a few semi- 

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



