KELLERMAN ON SYNDESMON.
]
From the above tabulation it may be seen that of the plants selected at
random for examination 51 per cent. of the stems have three flowers and
49 per cent. have four or more; 10 per cent. have simple involucral
leaves only, 44 per cent. have both simple and compound, and 46 per
cent. have only compound involucrate leaves. Of the total number, 88 per
cent. have one or all of the involucrate leaves petiolate, and 12 per
cent. have only sessile ones. Observations of others on this interesting
little plant are solicited—especially should the Ohio botanists,
amateurs and pupils furnish such notes for publication in the OHIO
NATURALIST.
EXPLANATION OF PLATE 9.—Syndesmon thalictroides; the leaves, etc.,
were used as negatives and the photographs were reduced by the
engraver to less than one-half the natural size. Figs. 1, 2 and 3 show
leaves from the same plant; figs. 4, 5 and 6 are from one and the same
plant; figs. 7, 8, 9 and 10 are parts of the same plant; figs. 11, 12
and 13, also 14, 15 and 16 are each of one plant respectively; figs.
17 to 23 inclusive illustrate leaf variation, specimens taken from
different plants, except figs. 22 and 23 which are from one and the
same plant.