Loganiaceae family

The genus Strychnos is classified in the Strychneae tribe of the Loganiaceae family and is further sub-divided into twelve sections. Fourteen species are present in Madagascar, of which four are endemic to the island and ten shared in common with Africa [37]. 

The majority of indole alkaloids have been isolated from the three plant families, Loganiaceae, Apocynaceae, and Rubiaceae. Among this last family, the genus Pauridiantha has received limited attention, although about 30 different species have been identified and some of them are still being used in native medicine. 

The monoterpenoid indole alkaloids constitute one of the largest and most complex groups of secondary metabolites produced by plants. They have been shown to occur mainly in the Apocynaceae, the Loganiaceae, and the Rubiaceae plant families, but are also found more sporadically in a few other families. Of the several thousand indole alkaloids that have been characterized, a number have been developed into valuable medicines for the treatment of neurological disorders (reserpine), cancer (vinblastine and vincristine), and as vasodilators (yohimbine).1 3... 

The nux vomica tree Strychnos nux-vomica) is a species in the tropical family Loganiaceae. The range of the nux vomica in cultivation extends from Sri Lanka, India, southern China, southeast Asia, and northern Australia. 

The genera in the family of Loganiaceae (Table 1) include strychnos and trumpet flower. 

When placed in the Loganiaceae, it would extend the set of character state of the family) it would only be convenient for the ovary position and very inconvenient for the other characters mentioned by van Beusekom. So, a more natural (in the senses of Prof. Kalkman s The two challenges ) is in nubiaceae, not in Loganiaceae,... 

Introduction and Interrelationships.—Calabash-curare is prepared from the bark of South American Strychnos of the family Loganiaceae. From the curare and the Strychnos species, along with a large number of monomeric indole alkaloids, fifteen structurally classified bisindole alkaloids have been isolated. Their structures are all based on one CjgN skeleton. Only the N h N h fdimetho-salts exhibit high curare-activity. 

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