72 
HOW PLANTS AKE PROPAGATED. 
213. Monopetalous corolla; i. e. a corolla of one piece. It is so called, whether it 
makes a cup or tube with the border entire, as in Morning-Glory (Fig. 175), or with 
the border lobed, that is, the tips of the petals separate, as in Stramonium (Fig. 177), 
or even if the petals are united only at the bottom, as in the Potato- 
blossom (Fig. 182). The same may be said of a calyx when the 
sepals are united into a cup, only this is called Monosepalous . A mo- 
nopetalous corolla (and so of a calyx) is generally distinguishable into 
two parts, namely, its Tube or narrow part below, and its Border or 
Limb , the spreading part above. It is regular when all sides and lobes 
of it are alike, as in Fig. 175, 177, &c. It is irregular when the sides 
or parts are different or unequal in size or shape, as in Sage, Dead- 
Nettle (Fig. 181), the common Honeysuckle, &c. It is 
Tubular , when long and narrow without a conspicuous border, as 
in Fig. 178, or 
Trumpet-shaped ; tubular, gradually enlarging upwards, as in Trumpet-Creeper 
and Trumpet-Honeysuckle (Fig. 178) ; 
Funnel-shaped or Funnel-form (like a 
funnel or tunnel) ; when the tube opens 
gradually into a spreading border, as in 
Morning-Glory (Fig. 175) and Stramoni- 
um (Fig. 177) ; 
Bell-shaped or Campanulate ; when the 
tube is wide for its length and the border 
a little spreading, like a bell, as in Hare- 
bell (Fig. 179). 
Salver-shaped ; when a slender tube 
spreads suddenly into a flat border, as in Phlox (Fig. 180). 
Wheel-shaped or Rotate ; same as salver-shaped, with the tube very short or none, 
as in the corolla of the Potato (Fig. 182) and the 
Nightshade (Fig. 183). 
Labiate or Two-lipped ; when the border di- 
vides into two parts, or lips, an upper and a 
lower (sometimes likened to those of an animal 
with gaping mouth), as in Sage, Dead-Nettle (Fig. 
181, and the like. This is one of the irregular forms of monopetalous corolla, 
and the commonest. 
178. Trumpet- 
Honeysuckle. 
