ANALYTICAL KEY 



TO THE ORDKRS OF ALL TIIH PLANTS DKSCRIBLD IX THIS WORK. 



Skuies I. riLENOGAMOUS on FLOWERING PLANTS, thuse 

 producing real flowers and seeds. 



Class L DICOTYLEDONOUS on EXOGENOUS PLANTS. 



Stems formed of bark, wood, and pith ; the wood forming a zone 

 between the other two, ami increasing, when the stem continues from 

 year to year, by the annual addition of a new layer to the outside, 

 ne.xt the bark. Leaves netted-veined. Embryo witli a pair of opposite 

 cotyledons, or in Subclass IL often three or more in a wliorl. Parts of 

 the (lower mostly in fours or fives. 



Subclass L ANGIOSPEll^LE. Pistil consisting of a closed ovary 

 ■which contains the ovules and the seeds. 



Division L POLYPETALOUS: the calyx and corolla both present ; 

 the latter of licpnrate petals. 



A. Stanmis numerous, at least more than 10, and more than twice the se/>als. 

 1, Calyx entire} y free and si^parate from thf. pistil or pistils. 

 Pistils numerous but cohering over each other in a solid Fuse 



mass on an clonjijated receptacle. . . . Magxoi.iace.e, 48 

 Pistils numerous, separate, liut concealed in a holluw rccc])t:icle. 



Leaves opposite, entire : no stipules. . . . CALvrANTUACE.i:, 162 



Leaves alternate, widi stipules Kosa, in Kosace.k, UG 



Pistils several, immersed in hollows of the upper surface 



of a large top-shaped receptacle. Nclumhium, in Nvjirn.KACE.E, .'>4 

 IMstils more than one, separate, not enclosed in the receptacle. 



Stamens inserted on the calyx, distinct Eosacl.k, 14G 



Stamens united with the base of the petals, monadelijlious. Malvaci;.!:, "JS 

 Stamens inserted on the receptacle. 

 Filaments much shorter than the anther ; trees. . . Axoxace.t;, 50 

 Filaments longer than the anther. 



Flowers diarious : twiners with alternate leaves. Memsi>ei:mace.e, 'i\ 

 Flowers i)erfeet : if clind)ers, the leaves o))|josite. 



Leaves not peltate : ])ctals deciduous. . . TiAXt xcllace.i:, 34 

 Leaves peltate : petals persistent. Brasenia, in NYiirujiACE.t, f)* 



