EXPERIMENT STATION REPORT. 425 



Half Plot II. — Phlox Drummondii and Cohcea. 



No. Belt 4. No. Belts. No. Belt 6. 



1 Chamois rose. 10 Kermesia. Cobaea scandens blue. 



2 Variabilis atropurpurea. II Rodowitzii. " macrostemma. 



3 Atropurperea stricta. 12 Cuspidata. " scandens alba. 



4 Coccinea. 13 Kermesia splendens. 19 Coccinea. 



5 Leopoldi. 14 Occulta alba. 20 Black warrior. 



6 Eclipse. 15 Alba. 21 Stellata splendins. 



7 Eo-sea. 16 Mixed. 22 Mixed. 



8 Half-dwarf bouquet. 17 Half-dwarf blood red. 23 Dwarf snow ball. 



9 Dwarf surprise. IS Fancy mixed. 24 Fire ball. 



The cobseas interrupted the list of phloxes because desirable to 

 place these rank-growing vines requiring a trellis, at one corner. 



The phloxes failed in no instance to make a good stand, bloomed 

 freely, and in general were probably true to the varietal names. 

 Upon September 20th the following notes were made : 



It is observed that as the plants get older there is tendency to vary 

 from the normal form. The most conspicuous variation was the 

 green (chlorotic) form, met with in nearly every row. These plants 

 have the flower clusters with the bracts much prolonged and oval- 

 shaped ; the corollas are with long tubes and the lobes not fully 

 expanded, giving a half-opened appearance to the bloom. 



A study of these greenish clusters show that many of them carry 

 a small amount of the color, characteristic of the variety. Among 

 the white sorts the green flowers are present, usually a whole plant 

 being chlorotic when any part has green flowers. With red flowers, 

 for example, the "green "' plants bear flowers that are with the red 

 only along the mid-rib of the corolla lobe ; that is, a single stripe. 

 When there are flowers in a cluster, usually there are no two alike. 



Aside from the tendency to produce green flowers, there was a varia- 

 tion seen in several plants. The usual change was shown in a loss 

 of the normal color in one or more blooms, while others in the same 

 cluster showed a deeper color than the ordinary. This was as if the 

 color in the whole cluster had been unevenly distributed, and where 

 one lacked another had an excess. Such clusters were marked espe- 

 cially for saving seed. 



The phlox are particular favorites of certain butterflies, and 

 among these insects the Papillios are the favorite attendants. The 

 long tube of the corolla excludes all the smaller insects and those 

 with short probosces. 



The profusion of bloom upon these plants has been something 



