Vinca pubescens

Vinca minor, cultivated in Georgia, USSR, has been shown to contain ( )-vincadifformine and vincine, both already known to occur in this species, together with apovincamine and 11-methoxyvincadifformine.92 Voaphylline, voaphylline hydroxyindolenine, and 11-hydroxytabersonine have been isolated from the leaves of Tabernanthe pubescens,43/ and 5,22-dioxokopsane (177) from the root bark of Alstonia venenata R. Br. 93 this is the first report of an alkaloid of the heptacyclic kopsine group in this species. 

These plants are simple varieties of Vinca major L., so that V. difformis Pourr. is more properly named V. major L. var. difformis (Pourr.) Pich., and V. major L. (V. pubescens Urv.) as V. major L. var. major (1). A glance at Table III will show that these varieties do produce different... 

The synonyms for the genus Vinca are Lochnera, Pervinca, Catharanthus and Ammocallis since the botany of the plants does not concern us here, the term Vinca is preferred (i), although this matter has been the subject of a recent discussion (2). The results now available show considerable differences between the alkaloids isolated from different species and this information ought to be of considerable value to the systematic botanist. The most marked contrast is between the bases of V. major and V. pubescens, and other Vinca species (see tables in this chapter). 

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