280 DIFFERENTIATION AND SPECIFICITY OF STARCHES. 



Euiriann oligostachya Kiinth.; Athcropogon oligostochya Niitt. (Granmwcece.) Dnj endosperm. 

 Separjited-grains polyliodral, the larger ones with an angular cavity; size 2 to S/n. (Jnly a 

 few compound grains are obser\'ed, consisting of 2 to over 300 components, spherical, oval, 

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



Melanocenchrys royleana Nees.; Pommereulla royleana Steud. (Graminacece.) Dry endosperm. 

 Compoimd grains spherical or oval, frequently angular by reason of pressui'e, consisting of 

 2 to 200 or more com]5onents; size about 20 to 25ju. 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,u. 



Corynephorus canescens Beauv. ; Aira canescens lAim. (Graminacece.) Dry endosperm. Compound 

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

 size 0.7 to 1.5/i. 



Deschampia jxincea Beauv.; Aiva juncea Vill. {Gi-aminacem.) Dry endosperm. Compound grains 

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

 size about 24^. Separated-grains size 2 to Tyu ; the smaller ones rounded-angular, the larger 

 ones polyhedral, and frequently with a small cavity. 



Deschampia ccespitosa Beauv.; Aiva cccspitosa Linn. {Graminacece.) Dry endosperm.- Starch as in 

 the preceding. Size of compound grains about 30/j, of separated-grains 2 to S/i. 



Deschampia pulchella Trin., var. tenovei; Aiva pulchella Willd., var. tenorei Guss. {GraminacecE.) Dry 

 endosperm. Separated-grains rounded-angular; size 2 to 6/i. 



Airopsis globosa Desv.; Aiva globosa Thore. {Graminacco!.) Dry endosperm. Compound grains 

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

 distinctly granular, or often homogeneous; size about 12yu. Separated-grains round or rounded 

 angular; size 1 to 3/i. 



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

 preceding species. 



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

 or oval, occasionally angular tlu-ough pressure; delicately reticulated or granular-reticular 

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

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



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

 Size of the compound grains 13;u, of separated-grains 1.5 to 4/i. 



Avena orientalis Schreb.; Avena hirsuta Roth; Avena brevis Roth. (Graminacece.) Fresh and dry 

 endosperm. Compound grains almost round to oblong, frequently somewhat angular through 

 pressm-e; consisting of 2 to 300 equal or somewhat imequal components; size about B/j.. Sep- 

 arated-grains polyhedral 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. 



Gaudinia Jragilis Beauv.; Avena fragilis Linn. (Graminacece.) Dry endosperm. Separated-grains 

 rounded-angular to polyhedral; the larger grains \vith a small central cavity; size 2 to G, 

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

 components; size about 21yu. 



Arrhenatherum elatius Mert. & Koch.; Avena elatius Linn. (Graminacece.) Dry endo-^perm. Com- 

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

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



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

 size 2 to 6 and 7fi; the smaller ones rounded-angular, the larger ones polyhedral with a central 

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

 21ai. 



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

 by pressure, granulated; size about 15/:. Separated-grains 1 to 4/i ; rounded or rounded-angular. 



Trislachya barbata Nees. (Graminacca;.) Dry endosperm. Separatetl-grains polyhedral; the larger 

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

 grains are observed, only perceived indistinctly within the cells; lounded or oval, frequently 

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

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



