250 THE ESSEX NATURALIST. Rose-bay (Epilobium angustifolium L.). Established on waste ground. Hairy Willowherb (E. hirsutum L.). Established on waste ground. Smooth-leaved Willowherb (E. montanum L.). Not uncommon in borders. Pale Willowherb (E. roseum Schreb.). Not uncommon in borders. Enchanter's Nightshade (Circaea lutetiana L.). Abundant in some old borders ; with its creeping underground rootstock it is hard to get rid of. Goutweed (Aegopodium Podagraria L.). Confined to two borders and giving little trouble. Fool's Parsley (Aethusa Cynapium L.). A; frequent. Cleavers (Galium Aparine L.). Fairly frequent. Field Thistle (Cnicus arvensis Curtis). Frequent in a few allot- ments. Yarrow (Achillea Millefolium L.). Frequent between allot- ments. Wild Camomile (Matricaria Chamomilla L.). On waste ground. Scentless Mayweed (M. inodora L.). On waste ground. Rayless Camomile (M. discoidea D.C.). On waste ground; introduced casually into England about the end of the last century from northwest North America, by navvies em- ployed in making the Canadian Pacific railway ; it has since been widely distributed by human traffic. The minute and very abundant fruits are easily distributed by muddy boots. Corn Marigold (Chrysanthemum segetum L.). Persists on one border and is not unwelcome. Feverfew (C. Parthenium Pers.). Once a common border weed, but gone now. Cudweed (Gnaphalium uliginosum L.). On old cart track. Groundsel (Senecio vulgaris L.). Too common on all cultivated ground. Nipplewort (Lapsana communis L.). Frequent in some borders. Chicory (Cichorium Intybus T.). A Casual, growing three to four feet high on cultivated ground, where it may be a survival from a crop of endive. Dandelion (Taraxacum officinale Wiggers). Common on waste ground ; the red-fruited form, var. erythrospermum Andz. occurs on grass verges.