LEGUMINOS2:-PAPILIONACE A. 211 
(Medicago; Fr., Luzerne), whose flowers (figs. 174-179) resemble 
those of the Clovers; but it differs in that its fruit is elongated 
and sickle-shaped, or more or less spirally twisted (figs. 176-179), 
Medicago sativa (Lucerne). 
Fia. 174. Fie. 175. 
Flower (8). Longitudinal section of flower. 
The edges of the spiral may be smooth and unarmed (figs. 176,177), 
or spiny (figs. 178, 179), and the turns, at first pretty close together 
Medicago orbicularis (Snails). Medicago ciliaris. 
Fra. 176. Fre. 177. Fra. 178, Fig. 179. 
Side-view of Fruit. Front-view of fruit. Fruit. Fruit unrolled. 
(figs. 176-178), may later become separated (fig. 179) under various 
influences. 
Melilot (fig. 180) comes very near Medick, and has the same pin- 
nately trifoliolate leaves; but the fruit is short and subglobular, 
straight or scarcely curved; it contains few seeds and opens later, 
if at all, into two valves. In this series are three other genera. 
Pp 2 
