October 28, 1891.] 



Garden and Forest. 



509 



closely set and stiff. With the numerous dead spines and 

 stubs they promise sure destruction to the clothes of any one 

 rash enough to try to climb them. 



The most westerly upland growth of this tree is found 

 covering the hills north of the Kansas River in southern 

 Pottawattomie County. It crosses the Blue and is found in 



the Black Oak more nearly resembles the Black Jack in the 

 rough checked appearance of its black bark. It is a larger 

 and better formed tree, and the thinner, deeply lobed leaves 

 will at once distinguish it. 



The Red Oak is by far the finer tree, and the iron-gray color 

 and smoother appearance of the trunk, the lofty habit and 



Fig- 79- — Senecio Heritieri. — See page 510. 



considerable numbers along the deeply cut ravines which 

 enter this stream from the west, but this is the limit. I have 

 found no trace of it on the Kansas or any of its tributaries 

 above the mouth of the Blue. The Black Jack affords a fair 

 article of fuel, but is of little value for mechanical purposes. 



Closely associated with this species in distribution are the 

 Black Oak (Q. tinctoria) and the Red Oak (Q. rubra). Of these 



fine open top, as well as the large acorns with flat shallow 

 cups, and the slightly lobed leaves, readily distinguish it from 

 the others. These three members of the Black Oak family all 

 find their western limit along the west bank of the Blue River 

 in Riley County. 



Another member of the Oak family is worthy of mention as 

 occupying about the same limits as the above-named Oaks. 



