480 
C0CC0L0BIS SP. (Polygonaceae . ) 31931. Seeds of a "carro- 
caliente" from the mountains of Costa Rica. Presented by 
Mr. Carlos Werckle, San Jose. "An interesting Coccoloba with 
small leaves and fine fruit." (Werckle.) For distribution 
later . 
CRO TALARI A SPP. (Fabaceae. ) 31999-32001., Seeds from 
Buitenzorg, .Tava. ' Presented by the Department of Agriculture 
at: the request of Prof. C. V. Piper of this Bureau. Intro- 
duced for 'trial as cover crops from the Buitenzorg Garden, 
Where special attention is being paid to the problem of green 
manures. For distribution later . 
CRO TALARI A SP. (Fabaceae.) 31941, Seeds from Puerto 
Bertoni, 'Paraguay.. . Presented by Dr. Moises S. Bertoni, 
Estacion Agronomica. Introduced for trial with the preceding 
and other- green manure crops. For distribution, later „ 
CYTISUS PROLIFERUS. (Fabaceae.) 31951-952. Seeds of the 
"escobon" 'from Grand Canary' and Teneriffe, Canary Islands. 
Presented by Dr. George. V. Perez, Puerto Orotava, Teneriffe. 
Two forms, both of which are used as forage for goats, but 
not as good as tagasastei Suggested for growing in the moun- 
tains of Southern California. For distribution later. 
DIOSCOREA SPP. (Dioscoreaceae . ) 31914-923.. Tubers of 
twelve yams from Port Moresby, Papua. Presented by Mr. J. A. 
Hamilton. "Native yams of splendid food value." (Hamilton.) 
For distribution later. 
ELAE AGNUS ANGUS T I FOLIA. (Elaeagnaceae . ) 31822. Seeds 
of oleaster from Upal , Chinese Turkestan. "The oleaster is 
mostly seen as a tall shrub, - but in good situations grows 
even to a fair-sized tree. Taken all around it is perhaps 
the most useful tree in Chinese Turkestan. It supplies 
excellent hedges, almost impenetrable to man and beast when 
well kept. From the branches stuck in the ground in slanting 
and zigzag fashion, very good temporary fences can be made. 
As a windbreak it is unexcelled, keeping the drying desert 
winds off from the cultivated lands of the oases. As a sand- 
binder it is of very great value, checking blowing and 
encroaching desert sands to a great extent, also where wash- 
outs are experienced its masses of fibrous roots retain the 
soil a good deal. Its wood constitutes in many oases the 
chief fuel supply, and to furnish this firewood the trees are 
pollarded every four to six years without suffering. . The 
wood, when dry, possesses fine heating capacities And makes 
a good bed of live coals which last during the whole might 
