162 THE AMERICAN BOTANIST 



flowers. During the past cool spring many flowers were 

 noticeably deeper in color and some of those ordinarily white 

 have developed anthocyanin and become a decided pink. 

 This is true of the garden snowball tree whose sterile florets 

 have in many cases taken on a rosy hue. 



Exotic Trees in Forestry. — Whenever anybody thinks 

 of reforesting a region, his attention turns as naturally to 

 European trees as if these were the only ones available. It 

 is a common human failing to distrust that with which we 

 are familiar. Witness the kind of trees that we invariably 

 use for cemetery planting; scarcely one per cent are of native 

 origin although we have more kinds of trees in this country 

 than are found in any other of like geographic position. 

 Similarly our foresters are seldom content to work with 

 native species but must ever experiment with European kinds. 

 Among those in great favor are Norway spruce {Picea 

 excclsa), Austrian pine (P. austriaca), Scotch pine (P. syl- 

 vestris) and European larch {Larix Buropca) though none 

 of them have proved to be better than our own species. There 

 is some suspicion that the growing of foreign trees holds 

 more of a lure for the experimentor than the cultivation of 

 our native trees does though one wovdd think that species ad- 

 justed to a region by more than three hundred centuries of 

 growth would be better for the purpose than any others. 



Clustered Cancer-root. — Indian pipes, beech-drops, 

 and coral-root have been familiar plants for many years but 

 only once has it been my good fortune to see pine-sap grow- 

 ing. Twice I have found colonies of squaw-root and a few 

 stalks of one-flowered cancer-root. This year I discovered 

 that the clustered or yellow cancer-root (Oroboiichc fascicu- 

 lata) also lives in tliis locality. It was a real surprise to 

 chance upon it on a near-by hill that has been explored in 

 every season. The clump was as big as my fist and thirty 



