220 THE JOURNAL OF BOTANY 
gathered by the late Mr. W. Reeves in Sept. 1888, near Alver- 
stone, Brading, which locality, if not identical with that deseribed 
as ‘‘near the Grove, Brading,” is very close to it. This is one of 
persistence of plants in certain habitats, and an extremely interest- 
ing subject for investigation would be the causes which tend to 
this persistence. The facts make it very difficult to say whether 
or not any plant is really extinct in any given locality.—Freperic 
STRATTON. 
CuEmantuus ERysimoipes Huds.—In preparing my new edition 
Species Plantarum, ed. 2, p. ‘ 
Wail-flower.. Habitat in salicetis cirea Godstow, prope Oxford, 
D. Perrin ; prope East Grinstead in comitatu Sussexiensi.” Stokes 
in Withering’s Nat. Arr. Brit. Pl. ed. 2, ii. p. 699 1787) retains 
the plant; but Smith (Hnglish Flora, iii. 201) refers it to Erysimum 
cheiranthoides. There is a specimen in the British collection in the 
Godstow Nunnery. udson 
his English plants with the C. erysimoides of Linneus, since Mr. B 
Daydon Jackson; in answer to a note sent him by Mr Britten, 
writes :—‘* The first sheet of Linneus’s Cheiranthus erystmotdes 
agrees with Frysimum lanceolatum R. Br yst. 11. 502, n. 22, 
+» DC. Syst. 
in all save that the uppermost leaves are denticulate; in But. Mag. 
t. € uppermost are depicted as entire; the claws of the 
petals elongate after flowering, and the stigmas are very noticeable. 
Of course this is remote from E. cheiranthoides as understood to- 
day.’’—G. Cuarince Druce. 
yo eee 
March, 1901, represent large clumps in full blossom. The Hon. 
Mrs. Evelyn Cecil, who took the photographs, has kindly furnished 
the following particulars of its introduction to Lytchett :—* Two 
plants were bought by Lord Eustace Cecil for Lytchett Heath, 
about 1876. One was planted in the garden, and died after several 
years. The other was planted in rough ground just outside the 
flower-garden, and grew well. It began to produce seed about 
1880, and since that date it has gone on increasing and seeding. 
ings that have been transplanted into the grounds near have 
equally established | Ives. Now one and two acres of 
ground are covered with thousands of bushes. The average height 
