2S0 DIFFERENTIATION AND RPEriFICITY OF STARCHES. 



Eufriana olhjofiiachya Kiinth.; AtJicropogon oligosiachya Niitt. (Grammacecc.) Dry endosj)erm. — 

 Separiitcd-grains polyhodra,!, the larger ones with an angular ctivity; size 2 to 8/i. Only a 

 few compound grains are observed, consisting of 2 to over 300 components, spherical, oval, 

 or, as the result of pressure, angular; size about 20//. 



Melanocenchrys royleana Nees.; Pomniereulla royleana Steud. {Graminacew.) Dry endosperm. — 

 Compound grains spherical or oval, freciuently angular by reason of pressure, consisting of 

 2 to 200 or more components ; size about 20 to 25ix. Most of the separated-grains are poly- 

 hedi-al, many with 1 curved surface and several pressure facets; the larger ones with a small 

 central cavity, also occasionally with single radial fissures; size 3 to 12/^. 



Coryuephorus canesccns Beauv.; Aira canescens Linn. (GraminacecB.) Dry endusperm. — Compound 

 grains spherical or oval, granular or homogeneous; size about 13^. Separated-grains rounded; 

 size 0.7 to 1.5/j. 



Deschampia juncea Beauv.; Aiva juncea Vill. (Graminacece.) Dry endosperm. — Compound gi-ains 

 spherical or oval, frequently angular as a result of pressure, reticulated-granular or granular; 

 size about 24/i. Separated-grains size 2 to 7m; the smaller ones rounded-angiilar, the larger 

 ones polyhedral, and frequently with a small cavity. 



Deschampia cwspitosa Beauv.; Aiva ccespitosa lAnn. {GraminacecB.) Dry endosperm. — Starch as in 

 the preceding. Size of compound grains about 30^, of separated-grains 2 to 8^. 



Deschampia pulchella Trin., var. tenovei; Aiva pidchella Willd., var. tenorei Guss. (Graminacece.) Dry 

 endosperm. — Separated-grains rounded-angular; size 2 to Gyu. 



Airopsis globosa Desv.; Aiva globosa There. (GraminacetB.) Dry endosperm. — Compoimd grains 

 spherical, oval, pyriform, occasionally slightly angular by reason of pressure; more or less 

 distinctly granular, or often homogeneous; size about 12//. Separated-gxains round or rounded 

 angular; size 1 to Zy.. 



Airopsis agrostidea DC; Aiva agrostidea Loise. (Graminacew.) Dry endosperm. — Starch as in the 

 preceding species. 



Trisetum argenteum Reen and Schult. (Graminacece.) Dry endosperm. — Compound grains spherical 

 or oval, occasionally angular through pressure; delicately reticulated or grauular-reticular 

 to homogeneous; consisting of 3 to 100 components; size about 14//. Separated-grains round, 

 more or less angular; size 1.5 to 5/i. 



Trisetum neglectum Willd. (Graminacece.) Dry endosperm. — Starch as in the preceding species. 

 Size of the compound gi-ains 13/i, of separated-gTains 1.5 to 4//. 



Avena orientalis Schi-eb.; Avena hirsula Roth; Avena hrevis Roth. (Graminacece.) Fresh and dry 

 endosperm. — Compound gi-ains almost round to oblong, frequently somewhat angukir tluough 

 pressure; consisting of 2 to 300 equal or somewhat unequal components; size about 5//. Sep- 

 arated-grains polyhech-al with rather sharp margins; if fresh they have a small central indis- 

 tinct hilum, when dry, they frequently have a small cavity instead of the hilum; size 7 to 12//. 

 Simple spherical grains are found among the above described. 



Gavdinia fragilis Beauv.; Avena fragilis Linn. (Grayninacece.) Dry endosper7n. — Separated-grains 

 rounded-angular to polyhedral; the larger grains with a small central cavity; size 2 to 6, 

 rarely 1 to 8//. Compound grains few, spherical or oval, consisting of 5 to 200 almost equal 

 components; size about 21//. 



Arrhcnatherum elatius Mert. & Koch.; Avena elatius Liiui. (Graminacece.) Dry endosperm. — Com- 

 pound grains spherical, oval, or pyTiform; consisting of 4 to 400 or more components; size 

 about 30//. Separated-grains polyhedral ; size 2 to 10//. 



Eriacline ampla Nees; Airopsis ampla Nees. (Graminacece.) Dry endosperm. — Separated-grains, 

 size 2 to 6 and 7//; the smaller ones rounded-angular, the larger ones polj-hedral with a central 

 cavity. A few free compound grains observed; round or oval, frequently angular; size about 

 21//. 



Eriachne microphylla Nees. Dry endosperm. — Compound grains rounded or oval, more or less angular 

 by pressure, granulated; size about 15//. Separated-gi-ains 1 to 4// ; rouniUal or romided-angular. 



Trislachya barbala Nees. (Gi-aminacece.) Dry endosperm. — Separated-grains polj'hedi'al; the larger 

 ones occasionally with a small central cavity; size 1.5 to 5 and G/i. A few free compomid 

 grains are observed, only perceived indistinctly within the cells; rounded or oval, freciuently 

 angular by reason of pressure; size about 20//. Isolated simple spherical grains and nianj' 

 separated-grains with one curved surface and one or several pressure facets are also present. 



