76 SEEDS AXD PLAXTS I:MP0ETED. 



49721 and 49722— Continued. 



From 15 to 20 pounds of seed of tlie white mustard are required to 

 sow an acre, which in the climate of California yields in a few months 

 a harvest o'f 1,400 pounds of seed. The plant matures its seeds well, 

 even in the desert tracts of central Australia. It can be grown in shal- 

 low soil, even on land recently reclaimed from swamps, but it prefers 

 clayey ground. The stalks and foliage after the seed harvest serve as 

 sheep fodder. The plant can be employed with great advantage as green 

 manure. (Adapted from Mueller, Select Extra-Tropiml Plants, p. 82.) 



For previous introduction, see S. P. I. No. 45000. 

 49722. Brassica juncea (L.) Cass. Brassicacese. Mustard. 



A mustard native from middle Africa to China. It is cultivated all 

 over India for Sarepta mustard seed; also extensively raised in China 

 as a pickle. It is a good salad plant. (Adapted from Mueller. Select 

 Extra-Tropical Plants, p. 82.) 



For previous introduction, see S. P. I. No. 32416. 



4S723 to 49729. Citrus spp. Rutacese. 



From Seharunpur, United Provinces, India. Budwood presented by A. C. 

 Hartless, superintendent, Government Botanic Gardens. Received March 

 22, 1920. Quoted notes by 3Ir. Hartless. 

 49723 and 49724. Citbus grandis (L.) Osbeck. Pummelo. 



49723. " Red pomelo." 



49724. " Large white-fleshed pomelo." 



49725. CiTBTJS sp. 



" Nagpur orange." 



49726. Citrus sp. 



" Round seedless lemon." 



49727. Citrus sp. 

 " Kaghzi lime." 



49728. Citrus sp. 



"At Auni Kala lime." 



49729. Citrus sp. 



" Sylhet or Rangpur lime." 



49730. Persea americaxa Mill. Lauraccae. Avocado. 



(P. gratissima Gaertn. f.) 

 From the city of Guatemala. Budwood collected by Wilson Popenoe, Agri- 

 cultural Explorer for the Bureau of Plant Industry. Received March 

 22, 1920. 



" Budwood of various ages from avocado No. 41. Finca El Pintado." 

 {Popenoe.) 



49731. LnLiuM nepalense D. Don. Liliacere. Lily. 



From Ness, Neston, England. Seeds presented by A. K. Bulley. Received 

 March 24, 1920. 



A showy lily, native to the central Himalayas, with a slender erect stem, 2 to 

 3 feet long, leafj- to the inflorescence. The glossy bright-green leaves. 4 to 6 

 inches in length, are oblong-lanceolate and 5 ribbed. The flowers, 4 to 5 inches 

 long, are greenish yellow outside and yeUow within and flushed except in the 



