Z PLANT MATERIAL INTRODUCED 



Attention may well be called again to the species of Actinidia, several of which 

 are included in this inventory. Both A. arguta and A. chinensis have fruited in 

 the United States and have sufficient good qualities to make them decidedly 

 worthy the attention of horticulturists and plant breeders. Hybridization is 

 possible, as already shown by a cross between A. arguta and A. chinensis made 

 by Doctor Fairchild (Journal of Heredity, vol. 18, Xo. 2. 1927), and improvement 

 by selection likewise offers a promising field. Horticulturists also should give 

 attention to the cultural requirements of the several species. 



Arachis nambyquarae (No. 65296) has proved very interesting in preliminary 

 experiments by reason of its great variability. Selections made have differed 

 widely, some giving very low yields of seed while others have given very high 

 yields. The value of this species is yet to be determined, but it is very promising 

 for experimental work. 



Crotalaria striata (No. 65295) is but another introduction of this species which 

 has proved of so much promise as an orchard cover and green manure in northern 

 Florida. It needs to be widely tested throughout the southern parts of the 

 Gulf States and west to southern California. 



Interest in stocks at the present time justifies calling special attention to a 

 German type of mazzard cherry (Primus avium, No. 65127) which is reported 

 of possible value for this purpose on account of its longevity and resistance to 

 disease. 



One of the most interesting ornamentals in this inventory is Euonymus ma- 

 oropterus (No. 65490). The brillant coloring and pendulous habit of the floral 

 parts in its native habitat are very striking, and these characteristics together 

 with its bright-colored autumnal foliage should make it a pleasing addition to 

 any landscape. 



Another introduction, Edgeworthia gardneri (No. 65250), a handsome yellow- 

 flowered bush from the temperate Himalayas, should be given further trial in 

 the more humid regions of the southern United States, where it may succeed 

 better than it has in the drier portions of the Southwest and California. Besides 

 its ornamental value, it yields a strong, tough fiber, from which excellent paper 

 has been made in Nepal. 



The botanical determinations of introductions have been made and the nomen- 

 clature determined by H. C. Skeels, and the descriptive matter has been prepared 

 under the direction of Paul Russell, who has had general supervision of this 

 inventory. 



Roland McKee, 

 Acting Senior Agricultural Explorer in Charge. 



Office of Foreign Plant Introduction, 

 Washington, D. C, June 6, 1927. 



