ARALU - Ailanthus excelsa
Ailanthus excelsa , Ailanthus malabarica & Ailanthus altissima /Oroxylum indicum (synonym)
Latin name Oroxylum = mountain wood (Oro= mountain, xylum = wood); indicum = of India.
Sanskrit names Shyonak, Pnithushithbi, Shukanasa, Kutannat, Katwang, Mandukpama Patrorna, Deerghavrunta, Aralu.
Botanical Description—It is a big tree of 10 to 12 meters height. Leaves are also big. Legume is very long and wide like a sword. Therefore its name is pruthushimbi. Leaf and flower stalks are also long (deerghnvninta).
Flowers — red or purple. Petals of flowers have a bad smell and are fleshy. Seeds shallow with wings. 0.75 cm. long and 1 cm. broad. It has some cotton also.
Rasa tikta. kashaya;
Dosha tridoshaghna. Shyonak is very useful on ama.
External uses : Roots hark is useful in amavata. its kashaya i.e. decoction is used for external application as well as for internal use. Dashamoola contains Shyonak.