50 SEEDS AND PLANTS IMPORTED. 



52606. HoLcus sorghum L. Poaceae. Sorghum. 



(Sorghum vulgare Pers.) 

 From Johannesburg, Transvaal, Union of South Africa. Seeds presented 

 by J. Burtt Davy, Agricultural Supply Association. Received March 

 11, 1921. 



White kafir introduced for comparison with American-grown seeds. 



52607 to 52617. 



From Ambato, Ecuador. ■ Seeds collected by Wilson Popenoe, Agricultural 

 Explorer of the United States Department of Agriculture. Received 

 March 11, 1921. Quoted notes by Mr. Popenoe. 

 52607. Datuba sanguinea Ruiz and Pav. Solanaceae. 



"(No. 570b. Ambato, Ecuador. January 14, 1921.) Two seed pods 

 from the common red-flowered arborescent Datura cultivated in the vicin- 

 ity of Ambato, altitude about 8,500 feet." 



52608 and 52609. Delostoma rosicum (Karst. and Tr.) Schum. Big- 



noniaceas. 



52608. "(No. 566a. Quinta Normal. Ambato. January 22, 1921.) 

 Choldn. A small tree, native to certain regions of Ecuador and 

 occasionally cultivated in parks and gardens. It is rather sus- 

 ceptible to frost, but will probably withstand the winters of south- 

 ern California and southern Florida. Its lilac-colored flowers 

 resemble those of the catalpa in form and size." 



52609. "(No. 567a. Quinta Normal, Ambato. January 22, 1921.) 

 Choldn. This plant differs from 566a (S. P. I. No. 5260S), princi- 

 pally in the color of the flowers, which are pale lilac. It also 

 seems to be a trifle less frost resistant than the latter. For trial 

 in California and Florida." 



52610. Dukanta teiacantha Juss. Verbenacese. 



"(No. 562a. Ambato, Ecuador. January 22, 1921.) Chivo." 

 For previous introduction, see S. P. I. No. 52575. 



52611. JuGLANs sp. Juglandacese. Walnut. 

 "(No. 571a. Quito, Ecuador. January 29, 1921.) Tocte. There are 



probably two species of Juglans in Ecuador which go under this name; 

 one of them is Juglans peruviana, the other as yet undescribed. Both are 

 found in the highlands- between altitudes of 6,000 and 10,000 feet ; one 

 or the other is abundant in nearly every town of the sierra. The tree 

 is sometimes called nogal, as well as tocte; the fruit is always known 

 by the latter name. 



"Luis Cordero (Enumeraci6n Bot^nica) says of this tree in the 

 Province of Azuay, ' It is most useful, since it furnishes, aside from its 

 grateful fruit and its fine, solid, and beautiful wood, a tonic of probable 

 efficiency obtained from boiling the leaves.' The plant is much used by 

 the Indians of Imbabura Province in the preparation of dyes. 



" The tocte is abundant at Ambato. It can scarcely be termed a culti- 

 vated species in this region, since it is not commonly planted ; but trees 

 which spring up around cultivated fields and in dooryards are allowed to 

 grow unmolested, and the fruit is utilized in a small way. The plant 

 strongly resembles J. nigra, but the foliage is perhaps larger. The nuts 

 are an inch and a half in diameter, with a very thick bony shell deeply 



