Staminal Sheath
The drawing on the left shows the apically-free staminal sheath (which can also be partially connate) in subgenera Monnina and Pterocarya. The drawing on the right shows the totally connate staminal sheath of subgenus Monninopsis.
The drawing on the left shows the apically-free staminal sheath (which can also be partially connate) in subgenera Monnina and Pterocarya. The drawing on the right shows the totally connate staminal sheath of subgenus Monninopsis.