244 NATUKAL SYSTEM. 



mabU into carjpels^ &c. Under tins great division in the first 

 group of orders^ is the Ranimculus^ a type of the order Eanun- 

 cuLACEJ^: ; the Magnolia^ a type of the order Magnoliace^, 

 with several other orders. In a second gronj) of orders^ the 

 white Water-lily, Nijmplieca^ is a type of the NyMPHACEJi:. 



Thus we proceed through the twenty groups, in which we 

 meet with a large number of the most conspicuous orders among 

 the vegetable tribes — the Yiolace^e, or %nolet tribe ; the Mal- 

 VACEJs, or liolhjliock tribe ; the Caryophyllace^, or pi7ih tribe ; 

 the EosACEJi:, or rose tribe^ &c. 



DIVISION II. 



393. Monopetalous or Gamopetaloijs, Exogenous Plants. — 

 Under this division are eleven Groups of Okders, each group 

 usually composed of fewer orders than the preceding division, 

 and founded on various circumstances connected w4th the situa- 

 tion of the ovary and seed / the member and situation of the 

 stamens and pistils ; regularity or irregularity of the flower^ 

 &c. We find here the bell-flower, Campamda^ a type of the 

 order CAMPANULACEiE ; the sunflower^ the type of the Composite ; 

 the Asdepias, of the AscLEPiADACEJi:, &c. 



division hi. 



394. Apetalous, Exogenous Plants. — ^This division consists 

 of sevefi Groups of Orders, in some cases composed but of one 

 Order, for which no alliance is found. The groups are founded 

 on circumsta7ices of the ftovjers^ as perfect or imperfect / the 

 situation and cells of the ovary ; character of stipules ; nature 

 of the plant ^ as woody or herbaceous^ &c. "We find in this 

 division the Virginia snake-root, Ai'istolochia^ as the type ot 

 the natural order Aristolochiace^ ; the poke-weed, Phytolaca^ 

 the type of the natural order Phytolacaceje ; the common pig- 

 weed, Chenopodium^ the type of the order Chenopodiacej-] ; the 

 elm, the type of the order IJLMACEiE, &c. ; the oak, the walnut, 

 the birch, Avillow, nettle, mulberry, hemp, &c., each standing 

 the rej)resentative of a family, or natural order. 



SUB-CLASS II. 



395. Gymnospermous, Exogenous Plants. — Plants with seeds 

 naked or not inclosed in an ovary, the carpel being represented 

 by an open scale, as in Pines; or by a more evident leaf, as in 

 Cycas ; or wanting altogether, as in the Yew. We find here the 

 pine, the type of the natural order Conifers ; Cycas^ the type 

 of the order Cyc adages. 



CLASS n. 



396. Endogenous or Monocotyledonous Plants. — ^There are 

 fh^e groups ii) this class, each consisting of from one to twelve 



i 



