Ohio Naturalist.Plate 9.KELLERMAN ON SYNDESMON.
Ohio Naturalist.Plate 9.KELLERMAN ON SYNDESMON.
Ohio Naturalist.Plate 9.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 theOhio 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.