92 



nigosa. This species ({rows in low ground on the borders of 

 streams, bordei's of swamps antl in ahnost extinct sloughs near 

 Lake Michigan. It is also found along Pigeon River in the eastern part 

 of Lagrange County. In the vicinity of Mineral Springs in Porter 

 County it is locally a common shrub oi tree. It has the habit of stooling 

 out, and commonl}- the several specimens wdll be deflected fiom a ver- 

 tical from 20-4.5 degrees. The largest specimens are from 1-1.4 dm. in 

 diameter and about 10 m. high. 



Remarks. — This species could he used to good advantage in orna- 

 mental planting in low ground. It grows rajiidly, is easil}^ transplanted 

 and its foliage is dense and attractive. 



2. Alnus rugosa (DuRoi) Sprengel. Smooth Alder. Plate 37. 

 Shrubs with fluted or angled trunks, i'csenil)ling Carpinus; bark thin, 

 smooth or nearly so, reddish-brown, weathering gray; twigs hairj' at 

 first, becoming gray or reddish-brown \)y the end of the season and 

 more or less glal^rous and covered with small dark specks; leaves obo- 

 vate, barely acute or rounded at apex, wredge-shape at base, average 

 blades 6-10 cm. long, hairy on both surfaces wdiile young, becoming 

 smooth or nearly so above, remaining more or less hairy beneath, es- 

 pecially on the veins, under surface of leaves sufficiently glutinous 

 to adhere to paper if ]5rcssure be ajiplied, margins set with short callous 

 teeth, about .5-1 mm. long; fertile catkins cone-shape, 10-20 mm. long 

 and about 7 mm. in diameter, borne at the ends of branches in clusters 

 of 2-5. 



Distribution. — Maine to Minnesota, south to Florida and Texas. 

 In Indiana it is cjuite local. It has been reported in many of the 

 counties of northern Indiana north of the Wabash River. It has been 

 found in several of the southern counties and as far north asSaltCioek 

 in ]\[onroe County. No reports for the central part of the State. It 

 is absent also in all of the eastern counties of the State, and the western 

 l)art of Ohio. It is found growing in clum])S in wet woods, swamps, 

 cold bogs and along streams. It is usually a tall slander shrub; however, 

 a specimen has been seen that measured 7 cm. in diameter and 5 m. 

 in height. 



Remarks. — ( )f no value except for ornamental jjlanting in wet 

 ground. 



FA(;ACEAE. The Beech F.\mily. 



Trees with simple, alternate, petioled leaves ; flow'ers of two kinds; 

 fi'uit a one-seeded nut. This is the most important familj' of trees 

 occurring in the State. 



