Look for small green boxy pods that fade to yellow. When they're ripe, they'll split into four wrinkled brown nutlets. Look for four small dark brown to black pointed nutlets hidden within the dried cup that once held the flower. This photo shows the still green seedpods of M. stricta. Like other members of the borage family, each lungwort flower typically produces four of the dark nut-like seeds.
Crucifers are insect-pollinated.
The seedpods are especially distinctive, called siliques or silicules, and primarily of two types. Long thin pods are typical of wallflowers, dames rocket and stocks, while alyssum, honesty etc are noted for their rounded flat papery pods. Arabis seeds can be stored up to five years and still have at least fifty percent germination. Also illustrated, right. When the petals fall from a dames rocket flower, the seedpod begins to elongate, eventually forming a long slender tubular green pod - often while the plant is still in flower.