32 THE ESSEX NATURALIST.
many specimens would have been impossible without his kind
assistance, and through him I am greatly indebted to the Conti-
nental authorities, Drs. A. Thellung, Murr and Danser, and
to Prof. Hackel, for the identification of plants of genera in which
they specialize.
The majority of the Colchester plants originate from refuse
dumped on the Hythe Quay from the extensive maltings, and
mostly show Mediterranean affinity. Others have doubtless
arisen from sweepings from boats carrying cotton-seed, wood,
and other commodities, and have also found congenial homes on
the mud dredged from the tidal river Colne. Many of the plants
therefore are not aliens in the strict sense of the word, but have
been imported into their present stations by human agency.
RANUNCULACEAE.
Adonis annua L. (Europe, Orient).—Hedge, Turner Road,
Colchester.
Delphinium Ajacis L. (South Europe).—Bourne Ponds and
Victoria Road, Colchester.
PAPAVERACEAE.
Papaver somniferum L. (Greece, Orient).—Langham, Great
Tey.
Bocconia cordata Willd. (China).—Garden Escape, Fitzwalter
Road, Colchester.
Glaucium flavum Crantz. New Power Station, Hythe Quay,
Colchester. G. C. B. and R. Melville, collector.
G. corniculatum Curt. (Europe).—Waste ground, Hythe Quay,
Colchester, on malting refuse.
Eschscholzia californica (Cham.) California.—Victoria Road,
Colchester.
Hypecoum pendulum L. (Europe).—Malting refuse, Hythe Quay,
Colchester.
FUMARIACEAE.
Capnorchis formosa Walp. (N. America).—Rectory Wood,
West Bergholt, Miss Frost, collector.
Fumaria parviflora Lam. Malting refuse, Hythe Quay,
Colchester.
CRUCIFERAE.
Cheiranthus Cheiri L. (Europe).—The Castle, the Roman Wall,
walls on East Hill and Roman Road, etc., Colchester.