Barbed Rivereed

From OurFoodChain

Predation on Lorensia riversubmerguscaused adaptations to the leaves, that made it harder for muscals to feed on them, to emerge. This led to the evolution of a new species.

106.68 centimeters tall
Originated in Zone 16

The leaves of the Barbed Rivereed (Lorensia setaferrum) have developed small but sharp thorns lining the edge. These thorns started as hardened edges to the leaves to reduce tearing, over time this developed protruding edges that elongated into thorns to deter predators. The Barbed Rivereed is quite similar to Lorensia riversubmergus, they have long roots that hold onto the substrate to avoid being carried away and grow in clumps. While they are usually submerged underwater, they can tolerate having parts of their leaves exposed.

Seed stems are grow in mid-Autumn and lay at the top of the water. If seed pods hit ground, they immediately burst open and 25-50 small seeds spread across the water and soil. This enables the seeds to be brought some distance. If the seed pod does not burst after a few days the pod will burst open. The seeds eventually fill up with water and either sprout immediately or sink to the bottom of a substrate and sprout then.