770 



CONVOLVULACEAE 



Gonolobus 



^50 



Map 1657 

 Ampelamus albidus (Null.) Britl 



30 



Map 1658 



Gonolobus gonocarpos (Walt.) Perry 



publicized this plant as an excellent honey plant under the name of blue- 

 vine. We introduced it for this purpose at Bluffton and some seed escaped 

 and we have been trying to exterminate it now for eight years without 

 success. If the Indiana beekeepers responded to the appeal to plant this 

 plant, it is, no doubt, now well established in all parts of the state. 

 Pa. to 111. and Kans., southw. to Fla. and Tex. 



6943. GONOLOBUS Michx. 



[Perry, Lily M. Gonolobus within the Gray's Manual range. Rhodora 

 40: 281-287. 1938.] 



Pedicels and fruit glabrous; flowers greenish yellow; fruit angular but not warty. 



1. G. gonocarpos. 



Pedicels and fruit pubescent, the pubescence consisting mostly of minute stalked 



glands; flowers crimson purple; fruit both angular and warty 2. G. obliquus. 



1. Gonolobus gonocarpos (Walt.) Perry. (Vincetoxictim gonocarpos 

 Walt.) Map 1658. Climbing vines in low woodland and in cultivated fields. 



Va. to Ind., southw. to S. C., Ala., La., and Tex. 



2. Gonolobus obliquus (Jacq.) Schultes. (Vincetoxicum obliquum 

 (Jacq.) Britt.) Map 1659. All of my specimens are from rocky wooded 

 slopes except one which was found in a low woods in Posey County, asso- 

 ciated with the preceding species. 



Pa., Ohio, Ind., southw. to Ga., Tenn., and Mo. 



249. CONVOLVULACEAE 1 Vent. Morning-glory Family 



Plants leafless, parasitic, twining; stems filiform, yellowish or flesh colored; corolla 



whitish, very small, less than 5 mm long 6968. Cuscuta, p. 771. 



Plants with green leaves, not parasitic; corolla usually colored, more than 5 mm long. 

 Stigmas 2, linear or oblong; calyx with two large subtending bracts (small in Con- 

 volvulus arvensis and far down on the peduncle) . . . .6993. Convolvulus, p. 774. 



1 T. G. Yuncker has critically reviewed the species of this family, occurring in Indi- 

 ana, and has cited specimens which are not in my herbarium. I have indicated these on 

 the maps with a "Y". 



