122 The Essex Naturalist Area. There is no sign of it today but the dry south facing slopes of the remaining unimproved grassland still provide a suitable habitat. Flora The old pasture which remains on these Thames gravels is very herb-rich. Toward the summit, the ground is very well drained, sandy and gravelly. Towards the end of summer much of the grass turns brown and withers and there ate many exposures of loose sand caused by the burrowing activities of rabbits. As the name Broom Hill suggests, Cytisus scoparius (Broom) grows very well on this hill. The other main woody plants are Crataegus monogyna (Hawthorn) and Sambucus nigra (Elder). There is some Oak along the hedgerows and also Elm Ulmus procera with the remnants of what must have been quite large trees on the southern slope of Broom Hill. Totally unlike improved pasture, these old grasslands ate ablaze with an abundance of flowering plants at different times of the year. In early spring, the summit can be white with Erophila verna (Whitlow Grass). Later on it is dusted blue with Bluebells Hyacinthoides non-scripta often mixed in with the dazzlingly white Meadow Saxifrage Saxifraga granulata. At different times the slopes are yellow with Bulbous Buttercup Ranunculus bulbosus or white with Common Daisies Bellis perennis. There are also large patches of purple Small-flowered Cranesbill Geranium pusillum and Dove's Foot Cranesbill Geranium molle. However, Broom Hill keeps its most special display until late summer when many hundreds of Autumn Squill Scilla autumnalis come into bloom. This is the only place in Essex, apart from Orsett Golf Course, where this beautiful plant can still be seen. The following list of some of the more interesting plants was compiled by T Pyner and R G Payne. Those species annotated "SCARCE" are included in Scarce Plants of the British Isles. Anchusa arvensis Bugloss - Quite common on sandy, disturbed ground. Anthriscus caucalis Bur Chervil — Very common, a characteristic plant of sandy pasture. Aphanes inexspecta Parsley Piert - Important component of flora on sand. Arenaria serpyllifolia Sandwort - Short sandy turf. Bryonia dioica White Bryony — Common amongst scrub on the hills, in hedgerows and around gravel pit, associated with a rare bee. Clinopodium calamintha Lesser Calamint - A few plants, most common on Hall Hill (TQ6677). [SCARCE] Carduus tenuiflorus Slender Thistle - One of the most common thistles here. Carex divisa Divided Sedge - Hall Hill. Cerastium semidecandrum Little Mouse-ear - Component of short turf. Cononodiurn majus Pignut - Common on the slopes of Broom Hill but rare in this area. Erodium cicutarium Stork's Bill - Abundant component of short well-grazed turf. Erophila verna Whitlow Grass — Abundant early spring annual. Filago vulgaris Common Cudweed - Common on bare sandy ground and in short turf.