TYPE 16. GRAINS COMPOUND, MANY COMPONENTS. 275 



Leersia oryzoides Swartz. (Grnminacece.) Dry endosperm. — Compound grains round or oval, fre- 

 quentl.y soniewliat angular as a result of pressure, sometimes almost polyhedral, consi'sting 

 of about 6000 or more components; size about 25 and 30ai. Separated-grains rounded- 

 angular, or polyhedral; the larger ones with a small cavity; size 2 to 7n. 



Oryza sativa Linn. {Graminaccm.) Dry endosperm. — Compound grains si)hcrical or oval, consisting 

 of 4 to 100 or more almost equal components; size about 25^. Separated-grains polyhedral; 

 frequently with a rather large cavity; size 3.5 to 8/i. 



Hydropyrum esculentwm Linn.; Zizania aquatica Linn. {Graminacece .) Dry endosperm. — Compound 

 grains, polyhech-al as a rcsxdt of pressure; with numerous components; size 25 and 2S/li. Sep- 

 arated-grains rounfled-angular; size 1.5 to 4/j. 



Zinzania clavulosa Michx. {Graminacece) probably belongs to this type. The comjjound grains 

 consist of numerous components; they are isodiametric to oblong, and polyhech-al as a result 

 of pressm-e; size aliout 30^. Separated-grains; size 2 to 5,u; the smaller ones rounded-angular, 

 the larger ones polyheilral and hollow. 



Ehrharta panicea Smith. {Graminacece.) Dry endosperm. — Compound grains spherical to elon- 

 gated-oval, occasionally somewhat irregular, homogeneous, or reticulate and granular, con- 

 sisting of more than 3000 components. Size about 40 and 45^. Separated-grains poly- 

 hedral, usually vn\\\ sharp borders and angles; frequently hollow; size 2 to 6^. 



Microlwna stipoides R. Br. {GraminacecB.) Dry endosperm. — Compound grains almost roimd or 

 oval, frequently angidar as a result of pressure, numerous components; about 20/x. Sepa- 

 rated-grains, size 2 to 5 and 7/j ; the smaller ones are rounded-angular, the larger ones poly- 

 hedral, and have a cavity. 



Cornucopice cucidlatum Lirm. {Graminacece.) Dry endosperm. — Compound grains rounded to elon- 

 gated-lanceolate, sometimes slightly irregular; two-fifths to as thick as long; reticular-granu- 

 lated; size about 54ju. Separated-gi-ains roimded-angular or polyhedral, usually with a 

 cavity; size 1.5 to 6^. 



Phalaris canariensis Limi. {Graminacece.) Dry endo.sperm. — Compound grains spherical to oblong, 

 rarely angular, half to as thick as long, reticulate-granulated, rarely almost homogeneous, 

 consisting of 4 to 2000 components; length about 36/x, thickness about 25ju. Separated- 

 grains rounded-angular or polyhedral ; size 2 to 5n. 



Phalaris bidbosaCa/v.; Phalaris ccmilescens Desf. {Graminnceoe.) Dry endosperm. — Starch as in the 

 lircceding. Compound grains consisting of 3000 and more components; size about 48/u. 



Anlhoxnnthum amarum Brot. {Graminacece.) Dry endosperm. — Compound grains spherical or oval, 

 reticulate-granulated; size about 25/:. Separated-grains rounded-angidar ; size 1 to Ajx. 



Hierochloa borealis Eoem. antl Schult. {Granmiacew.) Dry emlosperm. — Compound grains spherical 

 or oval, sometimes slightly irregular; consisting of 1000 or more components; size about 30 

 to 40/x. Separated-grains with rather sharp borders and angles; size 2 to 7/j 



Holcus lanatus Linn. {Graminacece.) Dry endosperm. — Compound grains round or oval, homo- 

 geneous or distinctly granular, consisting of 1000 or more components; size about 14/i. Size 

 of the separated-grains 1 to 2^. 



Bechmannia erucceformis Hochst. {Graminacece.) Dry endosperm. — Compound grains rounded-oval 

 to oblong, finely granular; size about 28 to 35/i. Separated-grains round or polyhedral; size 

 1 to 3 and 4yu. 



Lygeum sparlum Linn. {Graminacea'..) Dry endosperm. — Compound grains spherical to elongated- 

 oval, reticulated-gi'anular; size about 24/x. Separated-grains rounded angular or ])oly- 

 hcdral ; size 1 to 4/i. 



Milium effusum Linn. {Graminacece.) Dry endosperm. — Compound grains spherical or oval, reticu- 

 lated-granular; size about 24/i. Separated-grains rounded to polyhedral, frequently with a 

 small cavity; size 1.5 to 5/i. 



Milium vernale Biebrst. Dry endosperm. — Compound grains spherical or oval; homogeneous, or 

 granulated by delicate reticulations; size about 14/t. Separatcd-gi-ains rounded-angular; 

 size 1 to 3ju. 



Panicujn commelimEfolium Rudge. {Graminacece.) Dry endosperm. — Compound grains rounded 

 or oval, frequently more or less angular as the result of pressure, granular; size about 12 to 

 15/i. Separated-grains rounded; size 1 to 2.5//. Starches of the seeds from Brazil and Guate- 

 mala agree perfectly with those above described. 



