the.com/seedcase
Nature's lunchbox: it packs the next generation and walks away.
means The protective outer shell or pod that surrounds and holds a plant's seeds until they're ready to disperse.
from A plain English compound, seed meeting case, that means exactly what it stacks: the box that holds the seeds, no poetry required.
Built to breakMany seedcases evolved to split, snap, or explode open.
Travel gearBurrs are seedcases that hitchhike on passing fur.
Fossil recordTough seedcases preserve as fossils far better than flesh.