NATURAL SYSTEM OF THIS MAXUAI,. 421 



2. EpigyncB, in which the calyx is more or less adherent ; 

 and the ovary inferior. 



Sub-class 3. Corolliflorcs. — Flowers having both a calyx 

 and corolla, the latter with united petals ; 

 stamens inserted on the corolla or ovary, or 

 free and arising from the thalamus. Of this 

 sub-class we have three sub-divisions : — 



1. Epigyna, in which the calyx is adherent ; and the 



ovary consequently inferior. 



2. HypostaminccE, in which the stamens are inserted on 



the thalamus, and do not adhere to the corolla ; 

 ovary superior. 



3. EpipetalcB, or E-jncorolla, in which the corolla arises 



from the thalamus, and has the stamens attached to 

 it ; ovary superior. 



Sub-class 4. Monochlamydea, or Apctalce. — Flowers either 

 having a calyx only, or without both calyx 

 and corolla. 



Division 2. Gymnospermia, in which the ovules are naked or 

 not enclosed in an ovary, and are fertilized di- 

 rectly by the action of the pollen. 



Class 2. MoNOCOTYLEDONES, in which the embryo is monoco- 

 tyledonous ; the germination endorhizal : the stem 

 eudogenous ; the leaves usually with a parallel vcnn- 

 tion ; and the flowers with a ternai'y arrangement. 

 In this class we have three sub-classes : — 



Sub-class 1. DictyogencB. — Leaves with a reticulated vena- 

 tion, deciduous ; rhizome and root with the 

 wood arranged in a concentric manner ; floral 

 envelopes verticillate. 



Sub-class 2. Petaloidea, or Floridce.- — Leaves with a parallel 

 venation, permanent ; floral envelopes (pe- 

 rianth) verticillate and usually coloured, 

 rarely scaly, sometimes absent. This sub- 

 class has three sub-divisions : — 



1. Epigyn^, in which the flowers are usually herma- 



phrodite ; the perianth adherent ; and the ovary 

 inferior. 



2. HypogyiKB, in which the flowers are usually herma- 



phrodite ; the perianth free ; and the ovary superior. 



3. Blclines, in which the flowers are usually unisexual ; 



the perianth either absent, or consisting of a few 

 scales. 



Sub-class 3. Glumaccce. — Leaves parallel-veined, perma- 

 nent ; flowers glumaceous, that is, having no 



