134 ^"HE CEREALS IN AMERICA 



9^ Rust: leaves, per cent ; culms, per cent . 



10. Smut: loose, per cent ; stinking, per cent . 



11. Spike: erect; leaning; nodding. 



12. Spike: beardless; partly bearded; bearded. 



13. Shattering: badly; medium; none. 



200. Mature Dried Plant in Laboratory. Give each student a printed 

 or typewritten sheet as indicated below and request a description of two or more 

 varieties from dried samples by underscoring the adjective which most nearly 

 apphes to the condition found. If opportunity to study varieties in the field is 

 lacking, some of the items given in (199) may be included here. 



1. Length of spike: average of five spikes from base of lower spikelet to tip of 



apical flowering glume, not counting a^\^l, if any . 



2. Compactness of spike : very open ; open ; medium ; compact ; crowded. 



3. Shape, side view: tapering towards apex; tapering both ways; uniform; 



clubbed. 



4. Shape, end view: square; flattened vnth spikelet; flattened across spikelet. 



5. Sterile spikelets: No. . 



6. Awns : length . 



7. A\\'ns: slender; medium; stout. 



8. Awns : parallel ; spreading ; widely spreading. 



9. Awns: deciduous; partly deciduous; persistent. 



10. Awns: light yellow; yellow; brown; black. 



11. Spikelet: spreading widely; spreading; narrow. 



12. Spikelet : number of grains .. 



13. Basal hairs: long; medium; short; wanting: white; brown. 



14. Outer glume: light yellow; yellow; bronze; black. 



15. Outer glume: hairy; partly hairy; smooth. 



16. Width of outer glume : broad; medium; narrow. 



17. Length of outer glume: long (as flowering glume); medium; short 



18. Attachment of outer glume to rachilla : firm ; medium ; weak. 



19. Beak of outer glume: long; medium; short. 



20. Shoulder of outer glume : broad ; medium ; narrow : square ; sloping ; round. 



201. The Grain. Give each student a printed or typewritten sheet as indi- 

 cated below and request a description of two or more varieties by underscoring the 

 adjective which most nearly applies to the condition found. 



1. Density: very hard ; hard; medium; soft; very soft. 



2. Appearance of cross-section : very horny; horny; dull; starch. 



3. Weight: of 100 average seeds in duplicate (a) (b) . 



4. Ratio of length to width: divide length of twenty-five grains by >¥idtb ol 



twenty-five grains with crease down • 



5. Shape: straight; curved ; pear-shaped. 



6. Plumpness : plump ; medium ; shrivelled. 



7. Cheeks: flat; plump; angular. 



8. At tip: pointed; blunt. 



9. At baf**: pointed: blunt 



