Sequence alignments and homology trees of conserved pistil-specific proteins from S. squalidus, rice, Arabidopsis, tobacco, and crocus. A, LTP, orthologous to SCA (L. longiflorum). B, Cys-rich protein. C, Nodulin/mtn3 family protein, orthologous to mtn3 (Medicago trunculata) and NEC1 (P. hybrida).