33

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EXPLANATION OF THE PLATES.

Female. A. A. The spikes ( spica ) of flowers, a. A male flower, ex-hibiting the five petals, and the five stamens, b. The female flojver,exhibiting the perianth, w ith the germe and five styles, c. The peri-carp, which is a capsule ( capsula ). This is a good example of theclass Dioecia and the order Pentandria. Gmelin and other writershave referred this plant to the class Pentandria, and the order Pen-tagynia.

All the figures, in the lower division of this plate, are differentparts of the Veratrum album, or White-Hellebore, and are intendedto illustrate the class Polygamia , and the order Monoecia. A. Thehermaphrodite flower, exhibiting the six-pctalled corolla (which Jussieucalls a calyx, “ Calix asqualis coloratus”), with the six stamens, andthree germes. B. The corolla without the stamens. C. The six stamensseparated from the other parts. D. The three germes. E. The germemagnified. F. A stamen magnified, f. The anther. G» The maleflower. I. The six stamens-. II. h. The corolla of tlie malaflower.

This plant is referred, by Gmelin and other writers, to the classHexandria, and the order Trigynia.

PLATE XXX.

The first four figures upon this plate are illustrative of the classEodecandria; the remainder of the class Cryptogamia.

Fig. 1 . A. B. C. D. E. Different parts of the Asarum canadcnse, orCanadian Asarabacca, commonly called Wild ginger, and sometimesC’olts-foot. A. The germe below the calyx, and hid within the sub-stance. B. The stellate or star-shaped stigma (stigma slellatum), six-parted ( s&x-pariiium ). b. b. Six of the twelve stamens : the other sixhave been removed, but the placed which the filaments had occupied,are seen. C. The twelve filaments, inserted on the top of the germe.The filaments are subulate or awl-shaped ( jilamenta subulata),. wdththe anthers joined near to the middle of the filaments. D. E. Twoof the stamens, somewhat magnified.—Dodecandria Monogynia.

c c