MISSOURI BOTANICAL GARDEN BULLETIN 113 
the ravages of the currant borer. Too vigorous a growth 
may be headed back. 
To understand grape pruning it is essential to know that: 
(1) the fruit is borne on wood of the present season; (2) a 
vine should bear only a limited number of clusters—30-80, de- 
Ree upon the variety; (3) the bearing wood should be 
ept near the original trunk or head of the vine, otherwise the 
fruit will be borne further and further from the main trunk. 
The current systems of pruning renew to a head or main 
trunk each year. The trunk is carried up to the top of the 
trellis and two canes are taken from the top each year, their 
length varying from 6 to 12 nodes, depending upon the va- 
riety. A renewal cane is grown each year near the head, so 
that the old canes may be cut out yearly, thus keep- 
ing the fruit always near the trunk. Grape prpnine should 
be done during the winter or early spring before the flow 
of sap so as to prevent “bleeding”. 
ADDITIONAL GIFT OF ORCHIDS BY 
MR. D. S. BROWN 
An account of the donation to the Missouri Botanical 
Garden by Mr. D. 8S. Brown, of orchids, ferns, palms, ete. 
was given in the May, 1918, number of the Butierin. At 
that time it was stated that Mr. Brown’s gift placed the 
Garden in possession of the most complete collection of 
orchids in the United States, comprising, exclusive of the 
cypripediums, 691 species. Recently Mr. Brown has decided 
to present to the Garden the remainder of his orchid col- 
lection consisting of cypripediums and selenipediums and 
including many rare and beautiful specimens which could 
only be duplicated with the greatest difficulty, if at all. 
Through the generous public spirit of Mr. Brown the Mis- 
souri Botanical Garden will now be able to display these 
wonderful plants as never before. The entire collection of 
orchids now at the Garden includes 1,235 species and va- 
rieties, which, with many duplicates of the more common 
forms, makes a total of 5,732 plants. 
PAPHIOPEDILUMS (CYPRIPEDIUMS) AND PHRAGMOPEDILUMS 
(SELENIPEDIUMS) IN GARDEN COLLECTION 
(Nomenclature that of Rolfe and Hurst, The Orchid Stud Book, and 
Sander’s Orchid Guide.) — 
Paphiopedilum X Aasenii (Fairieanum X Swanianum 9 +" 4S 
P. X Abraham Lincoln (X Niobe X orphanum)* G.H. 
*Gift of D. S. Brown. 
1 G.H.—Garden hybrid. 
