Amphicarpaa monoica. 331 



long as the plant exists, development continues ; for branch- 

 ing .ind re-branching do not cease. As late as October, all 

 stages may be found from the- tiny bud to the large legume. 

 In August, a number of shoots were taken from plants 

 growing in a moist spot, with plenty of dead leaves lying 

 upon the ground. Most of these were cotyledonary shoots, 

 but some may have been runners from the simple leaves, 

 which long ago had disappeared. The number of buds and 

 small legumes then present were as follows : thirteen, six- 

 teen, twenty-two, forty, fifteen, thirty, twenty-seven, twenty- 

 one, twelve, seventeen, respectively. An astonishing series, 

 truly ; it is probable, too, that most would have matured fruit. 

 Observations were made to ascertain approximately the 

 length of time necessary for the maturing of these legumes. 



On February 15, an axillary runner from the first pair 

 of leaves was buried. It was 18^ inches long, and was 

 buried for about half its length. It bore one compound leaf, 

 a small runner in the axil of this leaf, and a runner nearer 

 the plant, in the axil of stipules. Each of these had two 

 tiny buds. Beyond these the main runner divided into 

 two. 



On February 22, the runner was 19 inches — there was 

 no apparent change in buds. 



On February 29, the runner was 19^ inches long and 

 the changes in pods were as follows : 



Pod 3 was }i inch long, and % inch in circumference, 

 and was becoming rounded. 



Pod 4 was % inch long, and was flat. 



On March 3, pod 3 was }i inch long, and quite rounded. 

 Pod 4 was }i inch long— also becoming rounded. The 

 others had been injured in an unexplained manner. 



On March 14, pod 3 was }i inch long; pod 4, % inch ; 

 both quite full and round. 



On March 7, an axillary runner 30 inches long, from the 

 first pair of leaves, was buried for half its length. It bore 



22 



