50 TABULAR REVIEW. [CHAP. 



divide each Class into Sub-classes and Divisions. The 

 kind of characters upon which these Sub-classes and 

 Divisions rest we are already familiar with, having 

 examined representatives of each. The Divisions are 

 farther divided into numerous Orders. These are treated 

 of in subsequent lessons. The Sub-classes and Divisions 

 may be synoptically arranged thus : 



13. DICOTYLEDONS are, in respect of envelopes of the 

 flower 



Dichlamydeous (Dichlamydece), as Pea, Bramble, Apple, 

 Parsnip, Marigold, Deadnettle, Primrose, or 



Incomplete (Incomplete}. If incomplete, either 



Monochlamydeous (Monochlamydece), as Stinging-nettle, 

 or 



Achlamydeous (Achlamydece), as Wiilow. 



Dichlamydeous flowers are either 



Polypetalous (Polypetalce\ as Wallflower, Pea, Bramble, 

 Apple, Parsnip, or 



Gamopetalous (Gamopetalce), as Marigold, Deadnettle, 

 Primrose. 



Polypetalous flowers have their stamens inserted on the 

 receptacle (hypogynous), and are hence called 



Thalamifloral (Thalamiflorce), as Buttercup and Wall- 

 flower, or, inserted upon the calyx (perigynous or 

 epigynous), and are hence called 



Calycifloral (CalyciflorcE), as Pea, Bramble, Apple, and 

 Parsnip. 



14. MONOCOTYLEDONS have their flowers, often im- 

 perfect, and with or without a minute, scaly perianth, 

 arranged upon a spadix, hence called 

 Spadicifloral (Spadiciflor<z)\ as Arum, 



or with a perianth of petal-like leaves, hence called 

 Petaloid (Petaloidece], as Orchis, Daffodil, Tulip, or with 



chaffy glumes or scale-like bracts enclosing the flowers, 



hence called 

 Glumaceous (Glumifera}, as Wheat. 



Petaloid Monocotyledons have their perianth 

 Hypogynous (Hypogyniz), as Tulip, or 

 Epigynous (Epigynce\ as Orchis and Daffodil. 



