180 Eleventh Annual Repoet 



tional. It has again been reported from Miami and Hamilton 

 counties. In Gibson and Posey counties it is more or less frequent 

 on the eastern border of the Wabash flats on the dune sands, which 

 vary in width from 34 to 4 miles. In Point Township in Posey 

 County, on the high ground, it is the most abundant oak and grows 

 to be a large tree. In other parts of the State where found it may 

 be common on a small area and then not appear again for miles. 

 It is usually found on sterile hill tops associated with the white 

 and black oaks. In our area, except Gibson and Posey counties, 

 it is a medium sized tree, seldom attaining a height of 25 m. (80 

 feet) or a diameter of 8 dm. (32 inches), usually about half this 

 size. 



The published records of the distribution are as follows : Clark 

 (Baird and Taylor) and (Smith); Gibson (Schneck); Hamilton 

 (Wilson) ; Lake (Higley and Radden) ; Miami (Gorby) ; Vigo (Blatch- 

 ley). 



Additional records are: Clark and Posey (Deam). 



Economic uses. Wood heavy, hard, tough, close-grained and 

 durable in contact with the soil. Used principally for crossties, 

 fence posts, wagon stock and construction material. 



3. Quercus lyrata Walter. Overcup Oak. Burr Oak. Plate 

 46. Bark on the trunk deeply fissured, ridges large, surface some- 

 what scaly, resembling the white oak in color; twigs reddish-green 

 and hairy at first, becoming smooth and gray or light brown; winter 

 buds ovoid, blunt, more or less hairy, about 3 mm. (3^8 inch) long; 

 leaves obovate-oblong, 6-20 cm. (23/2-8 inches) long, pointed at the 

 apex, wedge-shaped or narrowed at the base, divided into 5-9 lobes, 

 sinuses shallow or deep and rounded, the lobes horizontal or ascending, 

 the terminal one generally the largest and bearing two lateral lobes, 

 the two lobes below the terminal are generally the longest, leaves 

 a bronze-green and hairy on both surfaces when they unfold, be- 

 coming at maturity smooth and dark green above, paler and pub- 

 escent below, usually silvery beneath, petioles 2-20 mm. (yg-'J/g 

 inch) long; acorns sessile or on short stalks which are sometimes 2 

 cm. (% inch) long and are generally near the plane of the base of 

 the cup; nut depressed, globose, about 2 cm. (% inch) long, pub- 

 escent at the top, inclosed almost entirely in the rather thin cup 

 which is reddish-brown and pubescent within, scurfy pubescent 

 and light gray without, frequently splitting at the top; scales 

 pointed on the back, developing a tubercular ridge, which is large 

 and very prominent at the base of the cup, gradually becoming 

 smaller toward the top. 



