What is the smallest flowering plant?
killerPlants Tendrils: ~~1~~2~~3~~4~~5~~ Suggested Reading—>Click here. Killer Savings Nursery Links—>Click here. Killer Picks: The Amateur Naturalist, National Geographic Magazine—>Click here. Duckweed (Lemnaceae) is common. Most people who have seen slow moving streams or ponds would recognize duckweed, but many mistake the plants for algae. The duckweeds are monocots, closely related to the philodendron family. They are the smallest of the flowering plants, only about a millimeter or two in size.