I HAD a car passenger once who, with amazing powers of observation, spotted a butterfly orchid on a road bank while glancing out a side window. We stopped and walked back to check. She was correct, ...

Blobs of spittle-foam are attached to the long, winding tendrils of cleavers (galium aparine) which firmly cling with thousands of tiny hooks to passing trouser legs. At the edge of a town, no-thing ...