THE AMERICAN BOTANIST 



101 



may be introduced intO' other localities by means of pollen. In 

 recent breeding experiments of the Department of Agricul- 

 ture it was found possible to ship pollen of grape fruit and 

 tangelos from Florida to Japan and have it arrive in condition 

 to fertilize Japanese species. In previous experiments it was 

 found possible to keep pollen in cold storage for some days, 

 and it has long been known that orchid pollen may remain 

 alive for six weeks or more without special treatment, but the 

 most promising method for the pollen of common plants seems 

 to be that in which the pollen is sealed in glass tubes from 

 which the air has been exhausted. It is likely that future in- 

 vestigators will, by this method, be able to command a much 

 wider range of experiments. 



New Forms of Gaillardia. — The blanket flowers (Gadl- 

 lardia piilchella and G. aristata) are well known wild flowers 

 often found in cultivation, in which the broad yellow rays are 

 suffused, toward the base, with bright red. In the Gardeners 

 Chronicle, T. D. A. Cockerell has described a variety (albi- 

 flora) in which the normally bright yellow rays are cream- 

 colored. The form is comparable to Rudheckia hirta flarues- 

 cens, described in a recent issue of this magazine. Its mention 

 here is to call attention again to the curious way in which yel- 

 low and red are grouped on the ray flowers of many Compos- 

 ites, and to indicate their connection with each other as shown 

 in pale forms where the two colors are usually reduced in equal 

 proportions. Seedsmen have developed a large number of 

 forms of both the annual and perennial forms of Gaillardia 

 to which they have given grandiloquent trade names, but none 

 seem to have singled out that form of the perennial blanket 

 flower in which the ray flowers are all tubular. This is a very 

 striking departure from the normal and to facilitate reference 

 to it, in future it may be called Gaillardia aristata f. tukuliflora. 



