Mar,, 1909.] Distribution of Woody Plants of Ohio. 469 



protection against the elements, rather than a signal inviting 

 insect visitations. 



On the other hand there ma}^ be a reaction from the injury in 

 removing the parts even though the vital parts, the stamens and 

 pistils, remain untouched. Yet it is seen that the nasturtiums 

 in the green house were unaffected by removing the show}^ parts, 

 seeming not to suffer in the least, so with some cucumber vines 

 in the green house, these set fruit without apparent check from 

 cutting away these parts. This would lead us to think that 

 injury from cutting away these parts is perhaps a minor con- 

 sideration, although more tests would need to be made using for 

 instance nasturtiums and cucumbers outside as an additional 

 check, also several other kinds of flowers. At any rate the one 

 thing of which there can be no mistake in interpreting is that 

 insects are not necessarily attracted by the color of the flower 

 parts, as has so often been said. 



DISTRIBUTION OF THE WOODY PLANTS OF OHIO. 



Geo. W. Hood. 



In the following list an attempt has been made to divide the 

 woody plants of Ohio into groups according to distribution. 

 The data were obtained from the State Herbarium which is now 

 fairly complete as regards the woody plants of the State of Ohio. 

 In some cases, further collecting is necessary to show the exact 

 distribution. The plants are grouped according to the section 

 in which they are found, as trees, shrubs, climbing vines, and 

 trailing plants, under the heads of general, northern, southern, 

 eastern, or rare distribution. There are apparently no woody 

 plants that have come into the state from the west. 



Out of the 278 species listed there are 106 trees, 54 shrubs, 13 

 climbing vines, and 4 trailing plants of general distribution; 11 

 trees, 11 shrubs, and 2 climbing vines, of northern distribution; 

 10 trees, 1 shrub, and 2 climbing vines, of southern distribution; 

 1 tree of eastern distribution; 21 trees, 36 shrubs, 4 climbing 

 vines and 2 trailing plants of rare distribution. Besides the 278 

 species there are 32 others which have been reported as occuring 

 in the state, 17 of which should probably be removed from the 

 state list, but the remaining 15 should probably be retained as a 

 part of the Ohio flora. 



Supplementing the list on distribution is one of 66 of the 

 important timber trees of the state, 54 of which are of general 

 distribution and 12 of rare distribution. The 50 most important 

 are marked with a star. 



