1. CERCIS. The Redbud. 



Cercis canadensis Linnaeus. Redbud. Plate 10.5. Small 

 trees; bark of trunk of old trees fissured, reddish-brown; twigs glabrous, 

 light brown, becoming a dark brown; leaves alternate, broadly ovate, 

 average blades 6-14 cm. long, cordate at base, short-pointed, some- 

 times short-acuminate or rarelj^ rounded at the apex, margins entire, 

 glabrous or pubescent on unfolding, at maturitj^ usuallj^ glabrous on 

 both sides, or with a few hairs in the axils of the veins or along the veins, 

 sometimes more or less pubescent beneath, and with hairs on the veins 

 above; petioles generally 2-6 cm. long; flowers appear in April or 

 May before the leaves, in clusters of 4-8 on the branches of the preceding 

 season, pmk or rose color; pods 5-10 cm. long, thin, flat and glaljrous; 

 wood heavy, hard and weak. 



Distribution. — In Canada along the shoresof Lake Erieand Ontario, 

 New York west through Michigan to Iowa, south to the Gulf States 

 and west to Texas. Found throughout Indiana except there are no 

 records from the counties bordering Lake Michigan. In the northern 

 part of the State it is rare or frequent in ahu-vial soil along streams or in 

 rich woods. In the southern part of the State it is a frequent to a 

 common tree in ravines and on slopes. It is never found in wet situa- 

 tions, and consequently is absent in the "flats" of the southern counties. 



Remarks. — The redbud is the common name for this tree through- 

 out the State. In one locality it was known as the fish blossom because 

 the larger fish spawn when this tree is in flower. In text books it is 

 also called Judas tree. It is usually a tree 1-1.5 dm. in diameter and 

 5-10 m. high. It is of no economic importance and is classed as a weed 

 tree in the woodlot and should be removed. 



It is frequently recommended for ornamental planting. It prefers 

 a rich moist soil, and is shade enduring, although it succeeds best in the 

 open or in a light shade. 



2. GLEDITSIA. The Honey Locust. 



Pods more than 8 cm. long; seeds oval 1 G. triaoauthos. 



Pods less than 8 cm. long; seeds orbicular 2 G. aquatiea. 



1. Gleditsia triacanthos Linnaeus. Honey Locust. Plate 106. 

 Medium to large sized trees; bark of old trunks fissured and peeling 

 off in strips; spines on trunk large and often much branched, sometimes 

 4 dm. long; spines on branches not so large, generally more or less 

 forked; twigs at first green, turning a light brown; leaves pinnate or 

 bipinnate, 1-2 dm. long, rachis permanently pubescent; leaflets 9-14 

 pairs, fewer on the bipinnate forms, petiolules about 1 mm. long, form 



