CLASSIFICATION 



Nat. Ord. AROIDB^. Characters. — Leaves large, radical, 

 usually net-veined. Flowers unisexual, borne on a spadix, enclosed 

 or protected by a spathe, and often very fetid smelling. Perianth 

 none, or composed of 4-8 hypogynous segments. Stamens few or 

 many. Fruit a 1- or more celled, and 1- or more seeded berry. 



Genera described. — Aeisakum, Akis^ma, Biaeum, Saukomatum, 

 Arum, Deacunculus, Amoephophallus, Colocasia, Alooasia, 

 Caladium, Eiohaedia, Calla, Deacontium, Acoeus, Cyetospeema, 

 Chloeospatha, Synandeospadix, Thomsonia, Xanthosoma, Aeo- 

 DENDEON, Typhonium, Symplocaepus, Lysichitum, Anchomanes. 



Class II.— DICOTYLEDONS. 



Division I. POLYPETAL^.— Flowers with both calyx (sepals) 

 and corolla (petals). Petals free or distinct from each other. 



/Series 1. Thalamifloe.^. — Sepals usually free. Petals often 

 numerous. Stamens inserted on a . torus or receptacle, hypo- 

 gynous, numerous. Carpels free or united. 



Nat. Ord. RANUNCULAOB.S!. Characters. — Flowers regular 

 or irregular, with 3-6 hypogynous deciduous sepals, usually imbricate 

 in bud. Petals 3-15, hypogynous, in one or more rows, sometimes 

 assuming very remarkable forms in Monkshood (Aconitum). Stamens 

 usually numerous, hypogynous. Carpels numerous, 1-celled, free, 

 or occasionally united into a many-celled pistil. Fruit consists of 

 either dry, indehiscent achenes or follicles. 



Genera described. — Anemone, Eanunoulus, Ekanthis, Aconitum, 

 P.ffiONiA, Delphinium, Thalicteum. 



Nat. Ord. BERBERIDE.^. Characters. — Flowers solitary, or in 

 racemes or panicles. Sepals 2-6, deciduous, in a double row, 

 surrounded with petal-like scales. Petals free, hypogynous, either 

 equal in number to the sepals and opposite to them, or twice as 

 many. Stamens 4-6 (rarely 8), in two whorls opposite the petals, 

 hypogynous, free or sometimes mpnadelphous. Carpel solitary, 

 free, 1-celled. Fruit a capsule or berry. 



Genera described. — Bongaedia, Leontice, Caulophyllum, Podo- 

 phyllum. 



Nat. Ord. NYMPH.a3ACB.Sl. Characters. — Water plants with 

 large, long-stalked, heart-shaped or peltate leaves; and large, 

 beautiful, and often sweet-scented flowers. Sepals, usually 4, free, 



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