CLASSIFICATION. 



129 



having no cotyledon is called, A-cotyledonous, with one, Mono-cotyuc- 

 donous, and with two, Di-cotyledonous. 



2. Insertion of the Stamens. The stainens are above the germ, ^n- 

 der the germ, or around the germ ; in the 1st case, they are Epi-gy- 

 hous, 2d, Hypo-gynous, 3d, Peri-gynoris. 



3. Absence and presence of the Corolla. ^-jieteZozfs, corolla wanting, 

 Mono-pet alorts, corolla of one piece, Poly-petalous, many petals. 



4. U?iion, or separation of Stamens and, Pistils. Mono-clinious, sta- 

 mens and pistils on the same corollas, Di-clinous, stamens and pis' 

 (ils on different corollas. 



5. Union or separation of anthers. Anthers distinct, or anthers 

 Corrvbined. 



Synoposis of Jussieu's Mdhod. 



These classes \vete at first formed of 100 orders ; under the pres- 

 ent modifications Of Jussieu's method they have been multiplied, by 

 establishing new orders from genera which seemed not to belong to 

 any of the former established orders. 



The acotyledons include the Cfyptogamous plants of Linnaeus. 

 They are also Called cellulares, from their being formed of cellular 

 tissue without a vascular system. These are by some botanists 

 called floiterless plants ;* their leaves are destitute of veins. They 

 have no seeds with cotyledons, but are reproduced from a powder- 

 like substance, exhibiting nothing of the parts which constitute the 

 seeds in the other divisions of the vegetable kingdom. 



The monocotyledons, which consist principally of grasses, palms, 

 and liliaceous plants, are endogenous as regards the structure of their 

 Stems and branches ; — the veins in their leaves, instead of being re- 

 ticulate, or spreading out in various directions like a net, are straight 

 and parallel. This division consists of two large groups ;— 1st, plants 

 whose flowers have petals, called Petalloid<z, as the iris and lily; 

 the calyx and corolla being in three or six divisions ;— 2d, where, 

 instead of a proper calyx and corolla, the stamens and pistils are 

 surrounded with glume-Uke bracts; these are called Glumacece ^ 

 as in the grasses. 



The dicotyledons include all the phenogamous plants, except those 

 Which belong to the monocotyledonous division. These afe vascular 



* It was long asserted by botanists, that every plant had a flower, although it 

 might be invisible; but the term flowerless is now adopted by many for the cryptoga'- 

 ttioua family. 



How the insertion of the stainens?— How is the corolla considered I^How the an* 

 ther ?— Repeat the synopsis of Jussieu's method— What are the general characttria 

 tics of acotyledons ']— Of monocotyledons 7— Of dicotyledons 1 



