33O THE FORAGE AND FIBER CROPS IN AMERICA 



CLASS I. CLUSTER VARIETIES OR DICKSON TYPE. The most striking char- 

 acters are the absence of long wood limbs, except at the base, and the tendency 

 of the bolls to grow in clusters. The plant is usually tall, slender and erect. 

 The bolls and seed are usually small or more rarely medium; seeds thickly 

 covered with usually whitish fuzz, rarely any brownish or greenish tinge. 

 Varieties moderately early maturing. Percentage of lint ranges from 32 to 

 34 per cent. 



CLASS II. SEMI-CLUSTER VARIETIES OR PEERLESS TYPE. Similar to pre- 

 ceding type, but having along the main stem very short limbs above the base 



Mature unopened and opened long staple upland cotton bolls; variety 



Allen Improved. Two-thirds natural size 



(From photo by Webber) 



limbs, which latter are usually of medium length. Bolls variable in size; 

 seeds usually medium in size, well covered with fuzz of many shades, whitish, 

 greenish, or brownish. Varieties early to medium maturing. 



CLASS III. Rio GRANDE VARIETIES OR PETERKIN TYPE. This type is char- 

 acterized by its high percentage of lint, 35 or more per cent., and the absence 

 of fuzz or nearly so except at the tip end. Plants well branched, medium 

 size. Bolls small; black seeds quite small. Varieties medium maturing. 



CLASS IV. SHORT LIMB VARIETIES OR KING TYPE. Plants small, well 

 branched throughout; limbs short; bolls small, seed medium and thickly cov- 

 ered with fuzz usually brownish, more rarely greenish. Percentage of lint 

 32 to 34. Varieties characterized by extreme earliness. 



CLASS V. BIG BOLL VARIETIES OR DUNCAN TYPE. This type is distinguished 

 for the large size of its bolls, 51 to 68 being required to produce a pound of 



