PERENNIAL FORAGE GRASSES IO/ 



113. OUTLINE FOR STUDY OF MATURE GRASSES. Either fresh or dried 

 specimens may be used for this practicum. If the latter, both single mounted 

 specimens and bundles of grasses are desirable. The following eight grasses 

 are recommended: timothy, meadow foxtail, redtop, Kentucky blue grass, 

 Canadian blue grass, orchard grass, meadow fescue, and smooth brome grass. 



Latin name Common name 



Where found Date 



Student's name 



Culm: Height in inches 



Culm: Erect and ascending at base; erect but decumbent at base; de- 

 cumbent. 



Culm: Strong; medium; slender. 



Culm: Round; elliptical; lenticular. 



Culm: Strongly furrowed; medium furrowed; not furrowed. 



Culm : Color 



Culm: Foliage abundant; scanty. 



Cross section of upper part of culm: Solid; nearly solid; hollow: walls, 

 thick; medium; thin. 



Leaf sheath: Smooth; downy; scabrous. 



Leaf sheath: Split to node; partly split; closed. 



Leaf sheath: Relation of length of leaf sheath to length of leaf blade 

 ; constant or variable. 



Leaf sheath: Color. 



Ligule: Large; medium; small. 



Leaf blade : Length (average of five) ; width (average of 



five) 



Leaf blade: Midrib, prominent; medium; indistinct. 



Leaf blade: Veins, prominent; medium; indistinct. 



Leaf blade: Open; folded. 



Inflorescence: Number of flowers per spikelet : outer glumes, 



longer than flowering glume; shorter: flowering glume, hyaline; chartaceous. 



Panicle: Open and spreading; compressed or tufted; spike-like: length of 

 panicle 



114. SEED IDENTIFICATION. Supply each student with one gram of a com- 

 mercial sample of seed of timothy, redtop, orchard grass, Kentucky blue grass, 

 meadow fescue, perennial rye grass, and smooth brome grass. Student should 

 be supplied with a magnifier about five diameters, needle, cross section paper, 

 and a few sheets of white paper. Determine the following: 



1. Pure seed: No Weight 



2. Weed seeds: No No. of kinds Weight 



3. Foreign but useful seeds: No No. of kinds 



Weight 



4. Inert matter : Weight 



5. Flowering glume: Length: Determine when placed end to end number 

 required to cover five inches. Caryopsis: length 



