Vinca 



Apocynaceae 



761 



50 



Map 1632 

 Amsonia' Tabernaemontana 

 var. salicifolia (Pursh) Woodson. 



o ~5o 



Map 1634 



Apocynum androsaemifolium L. 



1. Amsonia Tabernaemontana Walt. var. salicifolia (Pursh) Woodson. 

 Willow Amsonia. Map 1632. Frequent to infrequent in our southwest- 

 ern counties in compact soils in low open woodland and along ditches. It is 

 perfectly hardy in cultivation in northern Indiana. 



Va., N. C, S. C, Ga., Ala., La., Ky., Tenn., Ind., 111., Mo., Ark., and Tex. 



6598. VlNCA L. 



1. Vinca minor L. Common Periwinkle. A trailing, woody perennial 

 which spreads rapidly in some localities. I have no evidence that it spreads 

 by seed. The largest colony known to me is in Spring Mill State Park. 

 Here it covers acres of native forest land and forms so dense a stand that it 

 not only makes difficult the reproduction of the forest trees but in many 

 places excludes almost all kinds of vegetation. For this reason it should 

 not be permitted to escape to woodland. 



Most commonly used in cemeteries from which it often escapes. On 

 account of this use it is commonly called graveyard myrtle or myrtle. 

 Naturalized in all parts of Indiana. 



Nat. of Eu. 



6667. TRACHELOSPERMUM Lemaire 



1. Trachelospermum difforme (Walt.) Gray. Map 1633. A climbing 

 vine, herbaceous in Indiana, growing in compact, clay soil in low, open 

 woods in southwestern Indiana. The flowers are yellowish and very 

 fragrant. The first specimen I ever found was detected by its odor. 1 

 noted a peculiar, pungent fragrance and in searching for the source I 

 found this vine, at least a rod distant. Very rare in our area. 



Del. to Fla., westw. to Ind., Mo., and Tex. 



