EXPLANATION OF TIIE PLATES.

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Fig. 2. The flower of Common Agrimony (Agrimonia Eupatoria,)of its natural size. Fig. 3. The same magnified. The corolla is five-petalled ( pentapetala ). The stamens are twelve, the styles two.—Dodecandria Digynia.

Fig. 4. Euphorbia Lathyris, or Caper-spurge. The parts are mag-nified. A. The twelve stamens. B. The germe. b. b. The styles,a. The six stigmas.—Dodecandria Trigynia.

Fig. 5. A little turf of Moss (the Bryum murale), in fructification.Tliis is represented of the natural size.

Fiq. 6. A detached individual of the same Moss , magnified.A. The stem. B. The capsule, to which Linnaeus gave the erroneousname of anther a. This is the pyxidida of some writers. The French call it pyxidule. C. The calyptre (caljjptra), which Linnams considersas a species of calyx.

Fig. 7. Another Moss . A. The stem. a. B, The pendant pyxidule,or capsule, b. The peristome.

Fig. 8. A. The capsule, which is cylindrical. B. The convexopercule, or lid ( operculum ), which covers the capsule, C, The ca-Jyptre detached.

Fig. 9 . The capsule of the Moss , represented in Fig. 7., consider-ably magnified. A- The hollow part, which contains the powder,13: The solid base of the same. C. The peristome (which Iiedwig callsthe peristomium or peristoma) furnished with straight teeth.—The pe-ristome was noticed by the great Dr. Haller, who called it corona , andwas, I believe, the first person who intimated, that the Mosses mightbe arranged according to this part.—D. The opercule. E. The ringof the peristome.

Fig. 10. A. The naked peristome. B. The opercule detached.

Fie. 11. and Fig. 12. Leaves of certain species of Mosses ,

Fig. 13. The fructification of a Lichen ,

Fig. 14. The funnel-shaped fructification qf a Lichen ,

Fig. 15. The fructification of the genus Marchantia . A. The es-cutdicon-like, or target-shaped, fructification ( pdta ). B. A cup

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