A plant genus of the family APOCYNACEAE. Members contain echitovenidine, echitamine, venenatine (an indole alkaloid), and anti-inflammatory triterpenoids

Synonyms: Alstonia, Pines, Milky, Alstonia scholaris, Milky Pine, txid52822, Milky Pines, Pine, Milky, Alstonias, txid52821