State Board of Forkstry. 165 



beneath; staminate catkins terminal, 2-7 cm. (^-2% inches) long, 

 pistillate catkins lateral, bent downward, at maturity resembling a 

 small cone; scales thickened at the tip. 



Distribution. Newfoundland and Saskatchewan south to Penn- 

 sylvania, and west to Iowa and Nebraska. In Indiana it has been 

 noted only in the vicinity of Lake Michigan where it is locally fre- 

 quent in low woods and low places between the dunes near the 

 lake. It frequently attains a diameter of 1-1.5 dm. (4-6 inches) and 

 a height of 9 m. (29 feet). 



The published records of the distribution are as follows: Lake 

 and Porter (Blatchley). 



Additional records are: Lake (Umbach) ; Porter (Chase); Lake 

 and Porter (Deam). 



2. Alnus rugosa (Du Roi) Sprengel. Alder. Plate 40. Trunk 

 fluted or angled, resembling Carpinus, bark thin, smooth or nearly 

 so, grayish brown; bud scales thickly black resinous dotted; leaves 

 ovate or oval, very short pointed or rounded at the apex, rounded 

 or somewhat wedge-shaped at the base, rather regularly and mi- 

 nutely serrate, 4-11 cm. (13^-4}/^ inches) long, smooth and dark 

 green above, Hghter below, with more or less rusty pubescence 

 beneath, especially along the veins, under surface of green leaves 

 sufficiently resinous to adhere to paper if pressure is applied; sta- 

 minate catkins 5-8 cm. (2-3 inches) long, 3-5 together, expanding 

 early in the spring, pistillate catkins erect. 



Distribution. Maine to Florida, west to Texas, rarely inland to 

 Minnesota. In Indiana it is found in widely separated parts of the 

 State. It is local in its distribution, usually growing in clumps in 

 swamps or along the banks of streams. It is usually shrub-like, 

 although it occasionally attains a diameter of 7 cm. (3 inches) and 

 a height of 5 m. (16 feet). 



The published records of the distribution are as follows: Clark 

 (Baird and Taylor) ; Gibson (Schneck) ; Jefferson (Coulter) ; Knox 

 (Ridgway) ; Kosciusko (Coulter) ; Lake (Higley and Radden) ; Miami 

 (Gorby) ; vicinity of New Albany (Clapp) ; Noble (Van Gorder) ; 

 Posey (Schneck); Tippecanoe (Coulter). 



Additional records are : Jefferson (Young) ; Monroe (Blatchley) ; 

 Jackson and Starke (Deam). 



Economic uses. Not of sufficient size or abundance to be of any 

 commercial value. 



