JANUARY 1 TO AIAECH 31, 1918. 47 



45941 to 45951— Continued. 



nut. Large Chinese chestnuts from trees cultivated in neigliboring 

 mountain districts." 



45948. "(No. 2458a. Wantiaoshan, Hupeh, China. November 30, 

 1917.) Wa U tze (bean chestnut). Chestnuts from wild trees 

 occurring at altitudes between 3,0(X) and G.OOO feet above soa level. 

 There is considerable variation among the trees and bushes from 

 which these seeds v>ere collected, and perhaps there is more than 

 one species among them. If so, there may be the chinquapin, 

 Castanea scguinii, which seems to be wholly resistant to the chest- 

 nut blight, Endothia parasitica. Purchased from a local collector." 



45949. Castanea seguinii Dode. Fagacese. Chinquapin. 

 "(No. 2459a. Ichang, Hupeh, China. November 16, 1917.) Moh pan li 



(hairy board oak). A shrubby chinquapin, occasionally growing into a 

 tree 25 to 40 feet high; it occurs on mountain slopes here and there in 

 Central China, often in great .quantities. Sprouts only 2 feet high often 

 produce seeds. It appears to be totally resistant to the bark fungus, 

 Endothia parasitical, and may be of considerable value in breeding ex- 

 periments such as Dr. Walter Van Fleet has been conducting for several 

 years. This species seems to be more moisture loving than Castanea inol- 

 lissima, but it grows well on the most barren mountain slopes." 

 For an illustration of a fruiting branch of this shrub, see Plate III. 



45950. Etjcommia ULMoroES Oliver. Trochodendracese. 



"(No. 2460a. Suilokua, Hupeh, China. November 13, 1917.) Tu cluing 

 Shu (ease of heart tree) and Sheh mien shu (floss silk tree). The so- 

 called Chinese rubber tree, which has proved to be more hardy and more 

 drought resistant in the United States than was at first expected. In 

 China the bark, with its silky threads (when broken), is used as a high- 

 class drug." 



45951. CiTEUS iCHANGENsis Swingle. Rutacete. Ichang lemon. 



"(No. 2461a. Ichang, Hupeh, China. December, 1917.) Cultivated 

 strains of Ichang lemons. To be sown to obtain bearing trees for all- 

 round purposes. There is considerable variation in the Ichang lemon, 

 and some seedlings might produce remai'kably good fruits." 



45952. Tamarix aphylla (L.) Karst. Tamaricacese. Athel. 



(T. articuJata Vahl.) 

 From Tucson, Ariz. Cuttings presented by Prof. J. J. Thornber, University 

 of Arizona. Received March 26, 1918. 

 " The athel or evergreen tamarisk of northern Africa. Trees with erect habit 

 and ascending branches. Branehlets numerous, threadlike, drooping; bluish 

 green, and appearing as if jointed or segmented on account of the character of 

 the small leaves. The plants grow readily from cuttings, which may be made 

 at almost any season. Cuttings often develop into trees 6 to 10 feet tall in a 

 year, while trees 4 to 6 years old under favorable conditions attain heights of 

 40 to 50 feet. Thrives in sandy and calcareous soils and in those with consider- 

 able alkali and is very drought and heat resistant. Young trees with well- 

 matured wood were only slightly injured with a temperature of 6° F. Excellent 

 for windbreaks and very popular on account of its rapid growth, symmetrical 

 form, and evergreen foliage." {J. J. Thornber.) 



