* 
ON THE BOTANY OF PLYMOUTH. 141 
53. A. rigidum, Baker.—Chlorophytum ag Kunth, Enum. iv. 
"es Drége 8738, Burchell 6734, Sanderso 
. A. viscosum, Baker.— Chlorophytum ? d Kunth, Enum. iv. 
eos; Drége 2673. 
ON SOME PECULIARITIES IN THE BOTANY OF THE 
EIGHBOURHOOD OF PLYMOUTH. 
By T. R. Arcuer Dnioos, F.L.S. 
n we "Pena the botany of a country, the absence, from a 
isnt tract, of any species generally common, affords well nigh as im- 
portant and ia a fact, from a scientific point of view, as does the 
Sons “of very rare or local ones in the same are 
bution, or rarity, within twelve miles of this town, of certain species con- 
sidered rather common, or at least not rare, in the South of England or 
over a yet larger portion of the kingdom. 
Ve ze rare and o as a “casual” (vide 
= 
e 
Š 
mm 
dH 
= 
L4 
5e 
bth, 1871. Plentiful in a field of Wheat by the lane leading from Plymp- 
ton to Elburton, July, 1871, associated with Valerianella Auricula, De 
Cand., and Linaria veis Dest. 
Sinapis alba, L. uite rare as a Plymouth species. When seen, it is 
generally i in Rape-fields, grob sown with the crop ; it d ap- 
pears with other cultivated plants, or as a “stray” from Ra 
plentiful in a field near Stadiscombe village, June, 1866. In very great 
abundance among Mangold Wurzel, in a field between Plympton and 
. Elburton, August, 1866. Plentiful among Rape in a field between Sta- 
867. In a a field of vd by the ne and Exeter Road, near 
near Crabtr tree, Oetober 8,1865. A "e or two at Stoke Damerel, 
oae ehe 
s Raphanistrum, L. Quite as rare as the last, though, unlike 
it, med established as a colonist, in arable land on the coast between 
own Thomas and Wembury. In a field at Common Wood, Egg Buck. 
