
          697

*[sketch of large caret ^ labelled '3' at the left '2' at the top, and '1' at the right]

M. rubra by the leaves.  In this plant the leaves are smooth, generally
irregularly [cut-] lobed and not accuminate, those of rubra are rough, somewhat larger
most generally not lobes and long accuminate.  Our next important
subject was to distinguish Ulma fulva from U. Americana by
the leaves.  In Ulma fulva the leaves are rough and are attached on
stems clothed with brownish hairs.  The stipules are easily seen
in young specimens.  In U. Americana the leaves are smooth, being
rather soft on under side, the branches are smooth and the
stipules are absent.  We were back to Walbrook again
at 6:30 P.M.  The trip was a most enjoyable one, notwithstanding
the dust.  The beautiful willow at the bridge across
the falls is Salix alba.

309

May 10, 1902.  A trip alone this afternoon to the ravine.  I
first went to the large patch of Tipularia near the pump-house.
It was hard to find for nearly all the leaves have already withered.
I then went to the hills opposite Owl Spring to look at the
Cypripediums*.  At mark No. 1. was one plant and it was blooming
at No. 2. were 3 plants and at No. 3. was one plant, none of which
was in bloom.  At the front of the hill near the brook were
two plants also not in bloom.  Near the spring and east of a
        