JULY 1 TO SEPTEMBER 30, 1921. 23 



ChajipeUier. The tubers are club shaped, tapering: to a finger size at the 

 upper part, and when jjrown in tlu> opvn are K^Mierally about 9 to 10 indies 

 long and weigh 12 to 14 ounces when fully grown. Occasionally twin tubers 

 develop on a single plant, but they are then of medium size. This yam may 

 be multiplied eitlier by means of cuttings of the tuber or by means of bulbils. 

 The size of the eventual tulier seems to depend a good deal on the size of the 

 piece from which the plant was grown. P.y far the most important mode of 

 multiplication is by bulbils. (Adapted from The Hardy Yams, by Dr. H. E. 

 Durham, in The Gardeners' Chronicle, 3d ser., vol. 69, p. 18.) 



" The stem of the vine is roundisli ; the leaf blade is heart-shaped, smooth, 

 upper surface shining. Mith reddish purple at base of blade." {R. A. Young.) 



54049. Datura rosei Safford. Solanacese. 



From Ibarra, Ecuador. Seeds collected by Wilson Popenoe, Agricultural 

 Explorer of the Department of Agriculture. Received .Tuly 21, 1921. 



"(No. 62.5a. Hacienda La Rinconada, Ecuador. June 13, 1921.) Huantuc. 

 A yellow-flowered form of the common arborescent Datura which is cultivated 

 about the huts of the Indians all through the Ecuadorian higlilands. The plant 

 sometimes grows to 15 or IS feet ; its tubular flowers are about 6 inches long, 

 2 inches broad at the mouth, and of a rich deep-yellow color. The plant is 

 worthy of trial as an ornamental in protected situations throughout southern 

 California and in southern Florida." (Popenoe.) 



A cluster of the tubular flowers and a fruit of this arborescent Datura are 

 shown in Plate IV. 



54050 to 54053. 



From San Jose, Costa Rica. Seeds presented by Caiios Werckl§. Re- 

 ceived July 16, 1921. Quoted notes by Mr. Werckle except as otherwise 

 .stated. 



54050. CouEPiA FLOccosA Fritsch. Ilosacefs. 



" Olosapo, sapotilla de olor." 



A stout-l)ranched, hoary Guatemalan plant with elliptic to obtuse leaves 

 1 to 4 inclies long, cobwebby above when young, and white tomentose 

 beneath. The small flowers in short reddish tomentose panicles are 

 followed by villose fruits. (Adapted from Fritsch, Beitragc sur Kennt- 

 niss der Chrysobalauace'en, II. In Annalcn des K. K. Natiirhistorischen 

 Hof museums, vol. 5, p. 12.) 



54051. Casimiroa Enui.is La Llave. Rutacese. White sapote, 



" The largest variety that I know ; the fruit is very good and weighs 

 fi'om 1 to li pounds." 



"A medium-sized erect or spreading tree, having palmately compound 

 leaves, small inconspicuous flowers, and yellowish green fruits the size 

 of an orange. The fruits have a thin membranous skin, yellowish flesh 

 of soft melting texture and sweet or slightly bitter flavor, and one to 

 five large oval or elliptic seeds. 



" In its native region the white sapote is a fruit of the highlands. 

 Throughout Mexico and Guatemala it is found at altitudes of 2,000 to 

 3.000 feet, and occasionally as high as 9,(X)0 feet. It is not grown in 

 regions subject to heavy rainfall." (Wilson Popenoe.) 



For previous introduction, see S. P. I. No. 47565. 



54052. Rheedia EDULis (Seem.) Planch, and Triana. Clusiacere. 



"A handsome pyramidal tree 20 to 25 feet high with deep-green 

 glossy oblong-lanceolate leaves 4 to 6 inches long. The elliptic bright 

 orange-yellow fruits 2 inches long and H inches in diameter have thick 

 tereliinthinous skin which separates easily from the .snowy white, juicy, 

 melting pulp. The flavor is acid uidess the fruit is almost overripe, 

 and strongly resembles that of Lansium domesticum. The one to three 

 seeds are about an inch long and adhere closely to the pulp ; when cut 



