COMMUNICATIONS. 



_ 231 



supply by planting at the places where the trees are to grow. 

 The flowers are out in May, and the nuts are ripe in October. 



28. Carya glabra, of Torrey. — Pignut Hichory. 



This very common species of Hickory was described by Mich- 

 aux, under the name of Juglans 'porcina, but the specific name 

 glabra, having already been given to this tree by Dr. Muhlen- 

 berg of Pennsylvania, must, in accordance with the just rules 



adopted among authors, be 

 restored to it. While it falls 

 but little behind the last spe- 

 cies in value as fuel, it posses- 

 ses some qualities in which it 

 is the most useful of the two. 

 j-^X Both are quite abundant in 

 our State, not only in the 

 thickly wooded districts, but 

 extending into the openings, 

 forming what are often known 

 as " Hickory groves." Like 

 the common Hickory-nnt the 

 flowers appear in May, and 

 the nuts ripen in October. 



The fio-ure shows the fruit 

 of the full size, and a leaf re- 

 duced to one half the natural 

 size. 



There are four other species 

 of Hickory found in the neigh- 

 boring States, but not yet detected in Wisconsin. — They are 



1st. G. suhtta, Nutt. — Thick Shell-Bark Hickory, found in 

 Ohio. It resembles the G. alba. 



2d. G. tomentosa, Nutt. — The Mockernut, or Grreat Ohio Wal- 

 nut, which is found in Ohio and in Illinois. 



3d, G. amara, Nutt. — Bitter-Nut, known as its name implies, 

 by the bitterness of the nut, by its thin shell, etc., found also in 

 Ohio and Illinois, and 



PIGNUT HICKORY. 



