March, 1905,] Key to Ohio Walnuts. 3°7 



25. Vitis labrusca L. 29. Vitis cordifolia Michx. 



26. " aestivalis Michx. 30. Ampelopsis cordata Michx. 



27. "* bicolor Le Conte. 31. Parthenocissus quinquefolia 



28. " vulpina L. (L.) Planch. 



In our species belonging to the Passiflorace,^ there is a 

 single unbranched tendril coming from the axil of the leaf. It 

 coils in the usual manner. 



32. Passiflora lutea L. 



The tendrils in the Cucurbitace.« represent modified shoots; 

 part of the tendril being stem and part leaf. They are from two 

 to five branched, all the branches coming from the same point. 

 Thev usually appear beside the leaf. The Ohio species are: 



33. M'crampelis lobata (Michx) 37. Cucurbita maxima L. 

 Greene. 38. Citrulkis citrullns (L.) Karst. 



34. Sicyos angulatus L. 39. Cticumis melo L. 



35. Cucurbita pepo L. 40. " sativus L. 



36. '■ pepo ovifera L. 



KEY TO OHIO WALNUTS BASED ON TWIG CHARACTERS. 



JOHX H. SCHAFFXER. 



Juglaiis L. Trees with valuable often very dark-colored 

 wood, spreading branches, and fragrant bark; twigs with terminal 

 buds and superposed axillary buds and with dark brown bark; 

 leaf scars alternate, large, heart-shaped, not 2-ranked; btmdle 

 scars 3 or in 3 areas ; stipular scars none ; end of twig often show- 

 ing a self-pruning scar caused by the falling away of the car- 

 pellate peduncle; pith diaphragmed, with cavities. 



1. Bark of twigs very pubescent. 2. 



1. Bark of twigs glabrous; terminal bud and most of the lateral buds 



hemispheric or very short-pointed, but some may be cone-shaped; 

 cultivated. /. regia L. English Walnut 



2. Axil of leaf scar with a hairy cushion below the buds; terminal bud 



light-colored, usually truncate, with long scales; lateral buds 

 usvially spher.'cal. /. cincrca L. Butternut 



2. Axil of leaf scar without a hairy cushion; terminal bud dark-colcred, 

 usually pointed, with short scales; lateral buds ovoid-conic. 



/. nigra L. Black Walnut 



The Nature Study Review, published in New York under the 

 editorship of Prof. M. E. Bigelow of Columbia and with a very 

 distinguished list of associates is undertaking to develop the nature 

 study movement along lines which will doubtless command 

 the support of the better class of naturalists. 



There has been of late years so much of a tendency to run the 

 nature study idea into such extremely popular and superficial 

 lines that the real purpose and intent of the originators has been 

 endangered. That there is abundant place for every agency 

 that will tend to extend the knowledge of nature while at the 



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