134 



THE INDIANA WEED BOOK. 



lifolia L. ) , perennial, flowers in terminal spikes, leaves all opposite, 

 glabrous, capsule broader than long, obtusely notched. All begin 

 flowering in March or April and continue until frost. They are 

 weeds in that they grow where grass or other crops should be found. 

 Remedies : thorough cultivation ; crowding out with clover ; pulling 

 or cutting from lawns and yards. 



THE TRUMPET-CREEPER FAMILY. BIGNONIACEJE. 



Woody vines or trees with opposite compound or simple leaves 

 and large showy clustered or axillary flowers. Corolla funnel- 

 form, bell-shaped or tubular, 5-lobed and somewhat 2-lipped; sta- 

 mens 2 or 4, inserted on the tube of the corolla and alternate with 

 its lobes; ovary 2-celled, many ovuled. Fruit a 2-valved capsule, 

 opening lengthwise. Seeds flat, transverse, winged. 



Chiefly a tropical family represented in the eastern United 

 States and Indiana by only 4 species, viz., the cross-vine, a hand- 

 some woody vine of southern range, found in Indiana only in the 

 lower Wabash valley ; two species of catalpa trees and the trumpet- 

 creeper. The latter is often very troublesome and is therefore in- 

 cluded in this list of weeds. 



100. TECOMA RADICANS L. Trumpet-creeper. Trumpet-flower. (P. N. 2.) 

 A woody vine, climbing to a height of 20 to 40 feet by means of air 



rootlets; leaves pinnate or 7-11-divided ; leaflets ovate, short-stalked, 



sharply toothed. Flowers in clusters of 2-9 ; calyx 5-toothed, leathery ; 



corolla orange and scarlet, 2-3 inches long. Capsules robust, 4-6 inches 



long, narrowed at both ends. Seeds broadly 

 winged on the edges, the wings frayed. (Fig. 

 97.) 



Frequent along fence-rows, borders 

 of thickets, etc., especially in sandy allu- 

 vial soils. June-Aug. Common in culti- 

 vation in the northern part of the State 

 but southward, where it is native, the 

 numerous sprouts give much trouble in 

 meadows and cultivated fields, where they 

 spring up by hundreds in strips along 

 the fences or wherever the old plant can 

 get some sort of support, being especially 

 annoying in the river bottom fields of the 



Fig. 97. Spray of flowers; a, pod; b, lar ^ ei> Streams. Remedies : repeated gTOb- 

 winged seed. (After Watson.) bing ; abandonment of fences and thor- 

 ough cultivation of the infested areas. 



