32

EXPLANATION OF THE ELATES.

A. A. Two of the fructifications upon the hack of the frond.—Cryp-togamia Filices.

Fig. 3. Clavaria Acrospermurrt, represented of the natural size, asgrowing upon old, dry wood.

Fig. 4. The same magnified.—These two figures, which may serve?to illustrate the order Fungi in the class of Cryptogamia, are copiedfrom Professor Hoffman’s Flora of Germany , or a Botanical PocketCompanion for the year 1795. Volume II. Erlangen .

PLATE XXVIII.

Sagittaiu A sagittifolia, or Common Arrow-head. This Is a very com-mon plant in many parts of North-Ameriea, as well as in Europe and ,Asia.—A. A portion of the root and the commencement of the leaves.Beside this root, there is always a bulb at the lower part of the root,growing in the solid earth, beneath the mud of the place in which theplant grows. This bulb, when boiled or roasted, is agreeable food,and the plant is cultivated by the Chinese.—B. The scape ( scapus ).b. Bractes ( bractm ). C. D. Petioles supporting the sagittate leaf ( foliumsagittatum ). E. One of the female flowers in perfection, exhibitingthe three-petalled corolla ( corolla tripe tala), and the styles. F. Afemale flower after the removal of the petals, exhibiting the three-leaved perianth ( perianthium triphyllum ), and the styles, f. A back-view of a female flower. G. G. G. The perfect male flowers, exhi-biting the three petals, and the many anthers. I. A back view of amale flower. II. One of the male flowers, not yet opened.

This plate is an excellent illustration of the Class Monoecia, and theorder Polyandria. It may, also, serve to illustrate the class Polyan-dria, and the order Polygynia , to which division of the sexual me-thod it is referred by Thunberg, Withering, Gmelin, and otherwriters.

PLATE XXIX,

Fig. 1 . and Fig. 2. The male and female plants of the Acnidacannabina, a common plant in the neighbourhood of Philadelphia , andother parts of the United States , Fig. 1. The male. Fig. 2. The