426 NATURAL SYSTEM OF THIS MANUAL. 
Series 2. Disciflore.—Thalamus furnished with a disk, 
which is hypogynous or adnate to the calyx 
or ovary; or bearing a series of glands ; 
stamens arising from the disk and either 
hypogynous or perigynous ; ovary superior, 
placentation usually axile. ; 
Series 3. Calyciflore.—Calyx usually gamosepalous; petals 
arising from the calyx or from a perigynous 
disk ; stamens perigynous or epigynous, 
ovary superior or inferior. 
Sub-class 2. GAMOPETALZ or COROLLIFLOR#, with usually 
bisexual flowers ; calyx commonly gamosepal- 
ous ; corolla gamopetalous ; stamens inserted 
on the corolla or ovary, or rarely separate 
from the corolla, and arising directly from the 
. thalamus ; ovary superior or inferior. Of this 
sub-class we have three series, as follows :— 
Series 1. Inferx or Epigynex, in which the calyx is ad- 
herent and the ovary consequently inferior ; 
stamens epigynous. 
Series 2. Supere, in which the calyx is inferior; the 
stamens inserted on the corolla, or rarely 
on the thalamus; ovary superior (except in 
Vacciniacex), and usually more than 2- 
celled. 
Series 3. Dicarpie or Bicarpellatx, in which the ovary is 
usually superior, and composed of 2 carpels, 
or rarely 1-3 ; stamens inserted on the corolla. 
Sub-class 3. MonocHLAMYDEZ or INcoMPLETZ.—F lowers 
either have a calyx only (nonochlamydeous), 
or without both calyx and corolla (achlamy- 
deous); often unisexual. Of this sub-class 
we have two series, thus :— 
Series 1. Supers, in which the ovary is superivr. 
Series 2. Inferx or Epigyne, in which the ovary is inferior. 
Class 2. MonocoryLEDONES, in which the embryo is monoco- 
tyledonous ; the germination endorhizal ; the stem 
endogenous; the leaves usually with a parallel 
venation ; and the flowers with a ternary arrange- 
ment. This class may, be divided into two sub- 
classes as follows:— * 
Sub-class 1. Petaloidew.—Leaves with a parallel venation, 
or rarely reticulated, permanent or occa- 
sionally deciduous; floral envelopes (perianth) 
verticillate and usually coloured, rarely green 
or scaly, and sometimes absent. This sub- 
class may be divided into two series :— 
