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INTRODUCTION TO BOTANY.

DiANDttiA, Examp.— Lemna, Ducks' Meat.

Triandria. Examp.— Sparganiam, Bur Reed; Typha, Bull Rush ;.Carex, Sedge.

Examp.— .iucula; Urlica, Nettle; Buxus, Box-Tree.Examp.— Amaranthus, Prince's Feather; Xanthium.Examp— Zizania, Pharus.Examp— Guellarda.Examp.— Sagittaria, Arrow-head; Juglcms, Walnut;

TcTRANDRIA.

Pentandria.

Hexandria.

HePTANDRIAi

POLYAN'DIIIA.

Corylus, Nut. ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^Monadelphia. Examp___ Finns, Pine; Thuja, Arbor Vita?; Cu-

pressus, Cypress.

Syngenesia. Examp.

Gourd. ^B

Gynandria. Examp.— Andracline.

Bryonia, Bryony; Jricosanthes, Snake

The class DIOECIA contains fifteen orders.

Monasdria. Examp.— Naias, Pajidanus.

Diandria. Examp.— Salve, Willow; Cerropia.

Triandria. Examp.— Empetrum, Crowberry.

Tetbandhia. Examp.— Hippophuea, Sea Buckthorn.

Pentandria. Examp.— Hamulus, Hop; Cannabis, Hemp.

Hexandria. Examp,— Tamus*, Black Bryony; Smilax, Sarsapa-rilla.

Octandria. Examp-— Populus, Poplar ; Rhodiala.

Enneandria. Examp.— Mercuriulis, Dog's Mercury ; Ilydrocharis,Frog-bit.

JDecandria. Examp.— Kyegelaria, Carica.

Dodecandria. Examp.— Menispermum, Moon-seed.

Jcosandria. Examp.— Flacourlia.

Poj.y anuria. Examp.— Cliff or tia.

Monadelphia. Examp.— Janipervs, Juniper; Taxus, Yew.

Syngenesia. Examp.— Riiscusj Butcher's Broom.

Gynandria. Examp.— Clulia.

POLYGAMIC contains three orders, formed on the nature of thetwo preceding classes. Thus:

Monoecia. Examp.— Musa, Banana-Tree; Atriplex, Orach ; Hoi-cus, Soft Grass.

Dioecia. Examp.— Panax, Ginseng; Fraxinus, Ash.

Trioecia. Examp.— Ficus, Fig; Ceratonia.

CRYPTOGAMIA contains four orders.

Fieices (Ferns). Examp.— Asplenium, Harts-tongue; Poly podium,Polypody; Eqitisetum, Horsetail.

Musci (Mosses). Examp.— Sphagnum; Bog-Moss; Bryum, Hyplram.

Alg* (Sea Weeds). Examp.—Liverwort, &e. Lichen, Fucus, Con-ferva.

Fungi (Mushrooms). Examp.— Jgaricus, Boletus, Lycoperdon.