22 WOODPECKEBS l x RELATION To TREES. 
Names of families and the statistics as to the number of species in 
them are from the same hook. 
Included in this list are the names of many trees attacked by sap- 
suckers, hut by which of the three species is not known. In view r 
of the immense range of the yellow-bellied sapsucker, probably all 
these trees are at some time or other punctured by this species. 
Many of them are undoubtedly attacked by one of the other species, 
especially in the West by the red-breasted sapsucker. 
The information concerning sapsucker attack on trees of various 
families is summarized for each family before presenting the evi- 
dence relating to the individual species. Following the family sum- 
maries are lists of all the species attacked, with detailed accounts 
of the species notably injured. 
The yellow-bellied sapsucker, in addition to attacking trees, also 
works upon several vines. Sometimes a vine is riddled while the 
tree which supports it is untouched. The vines upon which punc- 
tures have been noted are: 
Dutchman's pipe (AristolocMa macrofhylla) . — West Virginia (F.), 
Abbeville, La. 
Poison ivy (Rhus toxicodendron). — This vine is abundantly 
punctured by sapsuckers and sometimes partly or entirely killed, 
as at Longbridge, La. 
Rattan vine (Berchemia volubilis). — Abbeville, La. 
Frost grape (Vitis vulpina). — Longbridge and Abbeville, La. 
Virginia creeper (Psedera quinquefolia) . — Plummers Island, Md. 
Trumpet creeper (Tecoma radicans). — Cottonport and Abbe- 
ville, La. 
These 6 species of vines belong to 5 families, 2 of which are not 
otherwise represented in the list. 
THE MAIDENHAIR TREES (GINKGOACE^). 
This family contains only a single species, a native of Japan, which 
is commonly cultivated for ornament in the United States. It is 
vigorously attacked by sapsuckers, but so far as known it is not 
materially defaced. 
Maidenhair tree ((rinkgo hiloba). — Along the central avenue of 
the Agricultural Department grounds in Washington are 7() trees of 
this species, of which 29, or 38 per cent, have been pecked by the 
yellow-bellied sapsucker. Some of the trees show numerous punc- 
t ures, and in a few cases swollen girdles have resulted. One tree which 
divides into ten main trunks is closely punctured all over. The 
trees are disfigured, hut as they are not especially prized for beauty 
of trunk, the blemishes are not serious. 
