150 EXOTIC PLANTS ABOUT LONDON IN 1865. 
W. Pup ciorum, L. Abun- Common and well-established. 
C.polyspermum, Z.,var.a. c 
cai leptophylla, Z. Com- racemosum, Koch, and var. B. 
spicato-racemosum, Koch. 
W. reeds tinctoria, L. W. Beta maritima, Z. 
W. Cirpethenm coronarium, Z. Atriplex rosea, L. non Bab. Very 
C. segetum variable in appearance. Com- 
Calendula dne. L. Common. mon. 
Carduus acanthoides, Z. Appa- Rumex palustris, Sm. Perhaps 
rently various hybrid forms R. limosus, Thuil. 
between C. crispus, L., an Ricinus sp. ——? A few plants. 
nutans, L. Abundant. Very luxuriant. 
W. Centaurea Calcitrapa, L. Panicum miliaceum, L. Common. 
W. C. solstitialis, Z. eene viridis, Beauv. Abun- 
W. C. Cyanus, L. 
Crepis ton Hall. 8. ii: Beauv. Not common. 
Anchusa officinalis, L. A few Phalaris Canariensis, L. 
fools B. W. P. minor, Retz. Common. 
W. Echium violaceum, Z. A few | W. P.paradoxa, L. Abundant. 
plants. Polypogon maritimus, Willd. 
W. Ae cats cerulea, Schreb. Abun- Scarcely distinct from P. Mon- 
speliensis, Desf. 
W. dees Lagopus, L. P. littoralis, Sm. Rather scarce. 
W. Amaranthus iaa. L. Com- W. Bromus arvensis, 
mon. W. B. tectorum, Z. Common 
Kochia scoparia, Schrad. Com- | W. B. maximus, Desf. Scarce 
mon. Secale cereale, L. 
W. Chenopodium opulifolium, Schrad. Hordeum hexastichon, Z 
Setaria viridis, though an evident introduction at Mitcham, was re- 
corded by Hudson more than a century back as growing copiously at 
Battersea, and has frequently been observed there since his time. 
Many exotics do not grow in this country every season, and I believe 
this is the case with this plant. Last September it was in vast quan- 
tity and of large size along the river-bank of Battersea Park, mixed 
with S. glauca, Brassica Napus, and Kéniga maritima. Panicum Crus- 
Galli, also mentioned as a Battersea plant by Hudson, was abundant 
there last year. I have frequently been at the same place at the same 
time of year, but never met with these grasses, and cannot but suppose 
their appearance in such plenty due to the exceptional temperature of 
September, 1865. 
Potentilla recta, L (a form with small petals). In plenty on the 
isos bank at Mitcham station last June, but perhaps the remains of 
