cruciate

Web stabilimentum showing cruciate type, in the web of the orb spider Silver agriope Agriope argentata. Illustration from “30 Animals that made us smarter” by Patrick Ayree (BBC Books).

Hairy bittercress Cardamine hirsuta in pen and ink with flower and seed detail

Watercress Nasturtium officinale with flower and seeds and edible leaves

Oil seed rape flower Brassica napus flowering spike in stippled pen and ink with watercolour top wash

Hairy Bittercress Cardamine hirsuta with basal rosette of leaves, flowers, seed pods, and one dehising to show how the seeds are spread

Garlic Mustard Alliaria petiolata with flowers and fruiting pods