Actually, I'm working in the shape leaf description. In our research about state of art, we have found inconsistencies in shape-concepts used for many researchers. Now, we need feed our state of art with the majority references about concepts used in description of shape leaves. We have some references such as Gray (1888), Lawrence (1951), Font Quer (1982), Stearn (1992), Harris (1997), Moreno (1984), Singh (2010), Gonzales & Betancour (2013) and Ellis et. al. (2009). Our group are evaluating concepts of leaf shape such as Lanceolate, Ovate, elliptic, Obovate, oblong and others.
Could you please tell me more references about it?
Thanks a lot!