292 OHIO STATE ACADEMY OF SCIENCE. 
The flowering season of Salix interior is much longer than 
that of any other of our willows; it begins just after the pussy 
willows have gone by and continues late into the summer. I 
have even seen blossoms in October and on Cedar Point they are 
not uncommon in July and August. The first catkins come out 
on short peduncles with a few small bracts. Later when the 
season’s twigs have developed, they also bear aments at their 
tips. Just below these terminal catkins develop other lateral a- 
ments which blossom later and so prolong the season. We have 
no other willow which does this and the presence of these small 
undeveloped aments is very characteristic. The carpellate 
aments are generally but not always quite lax as they grow older. 
The flowers have a tendency, sometimes very marked, to appear 
in fascicles of from three to five on the rachis with a distinct in- 
terval between them. This is another characteristic feature 
present in no other species. The scales are yellow, deciduous, 
the filaments frequently pubescent. The ovularies at anthesis 
are scarcely longer than the scales with sessile stigmas on their 
summits. They vary much in shape being sometimes, especially 
when very hairy, thick and short with a squarely cut off tip, 
sometimes nearly rostrate especially when glabrous. The ma- 
ture capsules are narrowly conic, blunt pointed so as to be almost 
- cylindric if not well fertilised. When well developed they are 
quite large (1 cm.) sometimes glabrous sometimes tomentose. 
This variation makes them a puzzling problem and one would sup- 
pose there were several species instead of one but there seem to 
be no lines of cleavage between the different forms. 
Salix interior is with the exception of its own variety wheelert 
and the Texan S. thurberi the only representative of the longifo- 
liae east of the Rockies. It extends all oves the Mississippi valley 
and is occasionally met with east of the Alleghanies. In Ohio 
it is common everywhere. 
Salix interior var. wheeleri Rowlee. Wheeler’s Long-leaved 
Willow. 
This variety as I have seen it in Ohio sometimes acquires a 
slender tree form, but more generally is a low much branched 
dwarf bush, spreading in the sand by the sprouting of buried 
stems. These do not as in the species produce a dense clump of 
stems close together but come up only at distances of a meter or 
so and the result is a loose clump the members of which appear 
like independent plants. In extreme forms, the leaves especially 
the older ones from the axils of which branches come out, are 
very much broader than in the species (7-10 cm. x 2 cm.), dark 
green and glabrous with the typical venation of the longifoliae, 
except that the primaries are rather closer and more ascending. 
These extreme forms as they intergrade into the narrow glabres- 
cent leaves of the species pass through a series of forms which 
