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S. cinerea x viminalis [521]. Great Wymondley, Herts., 
April 3, and Oct. 13, 1923. This was distributed to the B.E.G., 
1921, as S. caprea x viminalis (Report, p. 577). I have now 
numbered it [521], and defer to the opinion of the Rev. E. F. 
Linton, who wrote, “ Looks more like a cinerea x than a caprea x , 
but there are some points in favour of each,” and again later, 
“I suppose one of the many forms of this hybrid, (S. cinerea x 
viminalis).” On the plants sent to the B.E.C. Mr. J. Fraser 
preferred S. cinerea x viminalis ; afterwards he agreed to S. caprea 
X viminalis. There is very slight striation, short, not much over 
3mm. in length, but the upper leaves retain a silky pubescence 
to Oct. or Nov. These leaves are small, being produced at the 
extremities of old boughs, and their base is ± cuneate (see Note 
to No. 539). I do not see any indication of rusty hairs. The 
stipules do not appear to be produced upon these old spurs. 
Camus uses identical terms in describing the stipules of these 
two hybrids. — J. E. Little. I consider this sufficiently marked 
to conform to S. caprea x viminalis ( mollissima Sm.) ( sericans 
Tausch). The leaves are clean and silky up to Oct. 13. The 
catkins are not large, but still young. The few r and minute 
striations under the bark could be derived from S. viminalis . — 
J.F. Yes ; a tree evidently growing in uncongenial conditions. — 
W. H. Pearsall. I fail to see the influence of S. cinerea in this, 
and should have thought it S. caprea x viminalis. Hybrids of 
viminalis with cinerea generally show 7 leaves somewhat broader 
upwards, and less clothed on the undersurface. — H. W. Pugsley. 
IS. cinerea x viminalis [539]. Swamp by M. Ry. & R. Hiz., 
Hitchin, Herts., v.c. 20, March 5, and Oct. 4, 1923. Bush about 
ten feet high, growing near No. 504. The striation, though 
present, is short and only occasional. The barren shoots are 
more glabrescent than the flowering ones, and much brighter in 
colour. Stipules narrow, slightly dentate, acuminate. The 
under side of the lamina on the late summer shoots remains soft 
until Oct. without any indication of rusty^ hairs, and frequently^ 
has a rounded base. The size of the lamina, up to 14cm. long, 
varies greatly according to the vigour jof the shoot. The other 
leaves, and those on the shoot spurs, become ultimately harsher 
and more glabrescent ; they have a much narrower and more 
cuneate base. — J. E. Little. Looks as if there was some S. caprea 
in this, though not so clearly as in [504]. Can it be S. caprea x 
cinerea x viminalis 1 This might arise from the crossing of S. 
caprea x viminalis and S. cinerea x viminalis.- — E.F.L. Correct I 
should say, although there is little pubescence, and the filaments 
are practically glabrous. — W. H. Pearsall. 
