1028 



Prunus bokhariensis Royle. (Amygdalaceae . ) 43039- 

 43048. Seeds of ten varieties of plums from Saharan- 

 pur, India. Presented by Mr. A. C. Hartless, Super- 

 intendent, Government Botanic Gardens. 



Rubia t inctorum L . (Rubiaceae.) 43037. Seed from 

 Paris, France. Procured from Vilmorin-Andrieux & 

 Company. "The root of Rubia t inctorum furnishes dyer's 

 madder. The plant is a native of the south of Europe, 

 and is extensively cultivated about Avignon and in 

 Alsace for the roots, which afford the fine scarlet 

 dye so highly valued by dyers and calico printers. A 

 great quantity is grown in the Levant, the north of 

 Africa, and in Holland; but that from Africa and the 

 East, particularly that from Cyprus, is the most 

 esteemed. Several attempts have been made to culti- 

 vate it in England, but without profitable success. 

 The roots are dug up the third summer after sowing, 

 and having been deprived of their cuticle, are dried 

 by artificial heat, and then reduced to a powder. 

 Madder has a bitter, astringent taste, and imparts 

 these properties to water and alcohol." (Hogg's Vege- 

 table Kingdom, p. 415.) 



Ulmus densa Litvinov. (Ulmaceae.) 43031. Seed from 

 Kieff, Russia. Purchased from Messrs. St. Przedpelski 

 & T. Antoniewlcz. "An elm of most remarkable dense 

 growth, sprouting out a little distance above the 

 ground, into a number of stems, which form an umbrella- 

 like head of foliage, which is so dense that it re- 

 mains always twilight even at bright noon, in an ave- 

 nue of these trees. This elm loves, apparently, a 

 climate with long hot summers and with winters not 

 too cold. Withstands a fair amount of alkali in the 

 soil and in the irrigation water, and will prove of 

 special value as a shade tree in the hot and dry in- 

 terior valleys of California, Arizona, Texas and New 

 Mexico." (Frank N. Meyer.) 



Notes on Behavior of Previous Introductions. 



Prof. C. C. Georgeson, in charge of the Sitka, 

 Agricultural Experiment Stations, writes Oct. 10, 1916. 

 Alaska, 



"Your letter of Sept. 19th asks for information 

 concerning the yellow flowered species and varieties 

 of alfalfa, which we are growing at our interior 

 stations, and which were presumably introduced by Pro- 

 fessor Hansen, on his several collection trips. 



