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528 Salisbury . — - Variations in Anemone nemorosa. 
to note that in the case of both these species the imperfect-flowered 
variety is usually associated with the more deeply shaded situations. 
However, the fact that the apetalous character is maintained after the 
wood in which this variety grows has been coppiced indicates that the 
characters of its floral organs are not a mere effect of inadequate illumi- 
nation. The perianth-segments are usually small, six in number, and 
arranged in two alternating whorls. Most commonly all six are small 
purplish-green structures of which the outer are the larger (3 to 4 mm. 
long) and the inner slightly smaller (2 to 3 mm. long). Rarely one to 
three of the outer segments may be white and petaloid, but the maxi- 
mum size which these have been observed to attain is 8 mm. in length 
by 5 mm. in width. In only one instance has a flower of this variety 
been found in which the inner whorl exhibited petaloidy, and in that 
case one member only was involved. This variety has been observed 
in several of the Oak-Hornbeam woods of Hertfordshire, and I have in 
my possession specimens given me by Mr. W. C. Worsdell which grew 
at Carnforth, Westmorland. 
A short diagnosis of the varieties mentioned is appended : 
Var. genuina : Phyllis perigonii elliptico-lanceolatis aut ovatis, apicibus 
acutis, latitudine maxima infra medium. Lateribus inferioribus foliorum 
non nitentibus. Long, phyll. perig., 19-20. 
Var. robusta : Phyllis perigonii oblongo-lanceolatis, apicibus obtusis, 
latitudine maxima supra medium. Lateribus inferioribus foliorum niten- 
tibus. Maior et minus viridis quam var. genuina est. Long, phyll. perig., 
18-19 mm. 
Var. apetala : Phyllis perigonii parvis purpurascentibus, vel 1-3 ex- 
tends albis, petaloideis. Long, phyll. ext., 3-4 mm, ; long, phyll. int., 
2-3 mm. 
