Ref1

https://books.google.com.my/books?id=XX3dBwAAQBAJ&pg=PA298&dq=Vigna+unguiculata+ssp.+cylindrica+grow&hl=en&sa=X&ved=0ahUKEwjHg4_959DeAhXbc94KHWaBAHkQ6AEIMTAB#v=onepage&q=Vigna%20unguiculata%20ssp.%20cylindrica&f=false