MEDICAGO FALCATA, A YELLOW-FLOWERED ALFALFA. 



23 



able ; the racemes are inclined to be compact ; stems of medium length, 

 inclined to be long ; leaves not especially abundant. This type of plant is 

 common in S. P. I. No. 24452 and is illustrated in figures 10 and 11. 

 Gboup 3. — Ascending. — Plants of this group have medium broad crowns, with 

 an average diameter less than those in group 2. Habit of growth, ascend- 

 ing. No striking characteristics are found generally in their flower or seed 

 habits. Stems rather coarse, inclined to be crooked, and not especially 

 abundant ; leaves usually not abundant. This type is found quite commonly 

 in S. P. I. Nos. 20718, 20719, 24455, 28070, and 28071 and is well illus- 

 trated in figures 12, 13, and 14. 



Fi<;. 10. 



-Iijuj\ ]ilu;il iWaiit ui AJrdiviji/o julcata, S. P. I. No. 24452, a broiid-crowned plant 

 with long procunil)('nt to dfcumlx'nt stems, reijrcsonting (iroup II. 



'Jkoui' 4. — Stiherect. — Plants of this group have medium to small crowns and 

 are ascending to erect in habit of growth. They are not characterized by 

 special flower types, but in general produce seed sparingly. The stems 

 are stiff and the leaves approach those of Medicago sativa in shape, but 

 are smaller and more abundantly jtroduceil. Tliis typ(^ of plant is found 

 in S. I'. I. Nos. 20718, 20710, 244r)5, 28070, and 2S(»71, but not iibundanlly. 

 It is well illustrated in ligun'S 15 mid 10. 



There are many form.s that do not fit jierfectly into the above 

 jrroiips hilt fall in the /ones between the ^roiij).s, since they liave com- 

 Ijinations of characters that are not consistent with this classifica- 

 tion. However, the four groups described, if interpreted liberally, 

 can he tiiinle to c'ner a large m:i joiil y uf the forms of the si)eci(^s so 



