AUTUMN BOTANY AT CLACTON.
251
St. Osyth Creek, as to almost exclude all other vegetation.
With it occurs, here and there, Lactuca saligna and Atriplex
littoralis.
I have already mentioned how interested I was in observing
that the usual hedgerow tree about Clacton is the small-leaved
elm—Ulmus sativa, Mill. In Surrey, the usual elm is that species
called by Dr. Moss Ulmus campestris of Linnaeus. In my own
neighbourhood I am acquainted with but one tree of U. sativa.
In addition to those previously mentioned, the following
are the more interesting plants seen by me in the vicinity of
Clacton :—
Erysimum cheiranthoides, L.—Clacton, near Coppens Green.
Brassica nigra, Koch.—Near Martello tower beyond Lion
Point, Great Clacton ; about Blockhouse Wick, St. Osyth.
Diplotaxis muralis, D.C.—Clacton, both annual and forms
of longer duration.
Lepidium ruderale, L.—Seen as a plant of waste places,
between Great Clacton and Little Holland, and as a member
of the sea-wall vegetation by Brightlingsea Creek.
Thlaspi arvense, L.—Remarkably abundant in cultivated
fields about Clacton.
Reseda lutea, L., and R. luteola, L.—Clacton.
Arenaria leptoclados, Guss.—Field near Rush Green.
Spergula sativa, Boenn.—Cultivated field above Clacton
Cliff.
5. vulgaris, Boenn.—Clacton ; field, Blockhouse Wick, St.
Osyth.
Medicago arabica, Huds. (M. maculata, Sibth.).—Sandy shore
near Lion Point ; between Great and Little Clacton.
Prunus avium, L.—Great Clacton.
Rosa comosa, Rip. (Sweet Briar).—Coppens Lane.
R. arvensis, Huds.—Between Coppens Green and Bocking's
Elm.
R. ovata, Desv.—Between Little Clacton and Bocking's Elm.
(I am under the impression that wild roses of any kind are scarce
in the immediate vicinity of Clacton.)
Crataegus oxyacanthoides, Thuill.—Seen between Great Clacton
and Little Holland Common.
Conium maculatum, L.—Between Great Clacton and Great