WO WILLOW HYBRIDS. 215 
on the under surface and much less glaucous, give the appearance 
They hay 
of being small nigricans leaves. e a blunt serration, 
decidedly broader than those of Arbuscula. 
The descriptions as given above purposely bring out the Arbus. 
la origin most fully, as that was at first most obscure. The habit 
of the bushes, the blackening of the specimens in the press, besides 
catkin characters referred to above, and the presence of galls in the 
rather hoary with woolly silk, more persistent than is usual with 
Glen Callater S. lanata; under surface white, with dense wooll 
tomentum. The petioles are long, being one-third more the 
5 
ents 
This plant took its habit of growth rather from S. lanata, also 
: | 
aurita-like twisting of the tip comes from the same source. 
ia on ae +. -2 1 2 be 41L oe L 
Ad 
and in the stipules being almost entirely obliterated. S. Lapponum 
pears to have this effect commonly with its hybrids. Here it is 
very curious: the large foliaceous stipules of S. lanata are reduced 
to a few small wizened things that are not noticed without being 
carefully looked for. 
Rev. W. R. Linton and I had hoped that one of our Clova 
plants, a small seedling, might prove this; but it has not done so. 
One would expect this hybrid to be of rather frequent occurrence, 
