Underwater photo of the seabed with grassy plants with strappy leaves. Some fish swim in the water column above the plants.

Posidonia (#Posidoniaceae) is one of the oddest of #OddMonocots. There are 9 spp., 7 of which were described in the 1970-80s. They are marine aquatic seagrasses (but not true grasses). Pollination is underwater! #Alismatales : P. oceanica by Marta Terry L. CCBYNCND2 #Botany #PlantScience 🌾🧪

Photo of a hand holding a shoot bearing an infructescence. The fruits are each comprised of three partially fused carpels. They are green and immature.

More #OddMonocots: Scheuchzeria palustris is the only sp. of the #Scheuchzeriaceae (#Alismatales). It’s a wetland plant from the circumboreal north. It has the cyanogenic glycoside triglochinin, leaves with apical pores (function?), & inaperturate pollen in dyads. 📷: Rob Rutledge CCBYNC4 #Botany 🌾🧪