TYPE IG. GRAINS COMPOUND, MANY COMPONENTS. 277 



PMppsia algida R. Br. {Graminacece.) Dry endosperm. — Compound grains romul or oval, more or 

 less angular, as a result of i^ressure; reticulate or reticulated-angrilar. Size about 20 to 

 25/i. Separated-graius rounded-angular or polyhedral, the larger ones with a cavity; 

 size 1.5 to 5;u. 



Coleanthus snbtilis Seidel; Schmidtea utriculosa Sternb. (Graminacece.) Dry endosperm. — Compound 

 grains spherical to elongated-oval, more or less angular as a result of pressure; homogeneous 

 or reticulated-granular; size about 24^. Separated-grains rounded-angular or polyhedral, 

 the larger ones with a cavit}'; size 2 to 5/ii. 



Alopeciirus geniculatus Linn. (Graminacece.) Dry endosperm. — Compoimd grains spherical or oval; 

 delicately granular, or reticulated-granular; size about 25ju. Separated-grains rounded- 

 angular, rarely polyhedral; size 1.5 to i/i. 



Alopecurus pratensis Linn. {Graminacece.) Dry endosperm. — Compound grains spherical or oval, 

 reticulated-granular; size about 26/i, rarely 33/f. Separated-grains rounded-angular, or 

 polyhedral; the larger ones with a cavity; size 1.5 to 5/i. 



Alopecurus alpinus Smith. (Graminacece.) Dry endosperm.~^tii,rch as in the preceding species. 



Alopecurus idriadatus Schrad. (Graminacece.) Dry endosperm. — Starch as in Alopecurus pratensis. 

 Size of the separated-grains about 7ju, of compound grains about 33ju. 



Phleum asperum Vill. (Graminaceos.) Dry endosperm. — Compound grains almost rounded or oval, 

 sometimes slightly irregular, three-fifths to as thick as long, consisting of 2 to about GO 

 equal components; size about 38/i. Separated-grains polyhedi-al, usually with sharp borders 

 and angles, frequently with a cavity and single fissines; size 6 to IG/z. 



Phleum tenue Schrad.; Achnodonton beUardi Beauv, (Graminacece.) Dry endosperm. — Compound 

 grains spherical or oval, frequently slightly angular and irregular, consisting of 4 to 

 about 60 components; size about 40ai. Separated-grains polyhedral, usually with sharp 

 borders and angles, frequently with a cavity from which single radial fissures proceed; 

 size 4 to 14/x. 



Crypsis schoenoides Lam. (Graminacece.) Dry endosperm. — Compound grains almost round elon- 

 gated-oval, half to as thick as long, reticulated-granular or almost homogeneous; size about 

 30^. Separated-grains polyhedral, frequently with sharp margins and angles, the larger 

 ones have a cavity; size 2.5 to Ifi. 



Vilfa coromandelina Beauv.; Sporobolus coromandelina Kunth. (Gi-aminacece.) Dry endosperm. — 

 Compound grains spherical or oval, three-fifths to as thick as long, reticulated-granular, 

 consisting of 6 to 1000 and more components; size about lO^u. Separated grains rounded- 

 angular, or polyhedral; the larger ones usually with a small cavity; size 2 to 5^. 



Agrostis verticillata Vill. (Graminaceos.) Dry endosperm. — Compound gi-ains round or oval reticu- 

 lated-granular; size about 20ai. Separated-grains rounded to polyhedral; size 2 to 7/i. 



Tnachyrum longifolium Hochst. (Graminacece.) Dry endosperm. — Compound grains, isodiametric 

 or oval, more or less polyhedral as a result of pressm-e, consisting of numerous components, 

 most of them fallen apart; size about 21/i. Separated-grains polyhedral, the majority with 

 a large or small cavity; size 3 to lO/i. 



Triachyrum cordofanum Hochst. (Graminacece.) Dry endosperm. — Separated-grains, size 1.5 to 5/^; 

 the smaller ones rounded-angular, the larger ones polyhedral, and have a cavity. Only a 

 few intact compomid grains are observed; these are reticulated and about 14,u in size. 



Colpodium steveni Trin. (Graminacece.) Dry endosperm. — Compound grains round, oval, and low- 

 cone-shaped, slightly angular or almost polyhedral, consisting of 400 and more components; 

 size about 25ju. Separated-grains 2.5 to G^u, polyhedral, the larger ones frequently with a 

 small cavity. 



Apera spica-venti Beauv.; Agrostis sp. Linn. (Graminacece.) Dry endosperm. — Compound grains 

 round to oblong, two-fifths to as thick as long, granular or almost homogeneous; length 

 about 25;u, thickness about 15;u. Separated-grains round or rounded-angular ; size 0.7 to 2^. 



Muchlenberyia willdenoivii. (Graminacece.) Dry endosperm. — Compound grains spherical or oval, 

 reticulated-granular (most of them have fallen apart); size about 24/i. Separated-grains, 

 polyhedral; the larger ones have a cavity; size about l/x. 



Cinna racemosa Kunth.; Muehlenbergia glomerata Trin. (Graminacece.) Dry endosperm. — Separated- 

 grains polyhedral, the larger ones have a cavity; size about 17ju. Among the above there are 

 a few spherical or oval compound grains wliich have not fallen apart; size about 22^. 



