236 IRREGULAR MONOPETALOUS COROLLAS. 
Rosemary (fig. 486) and Germander (Teucriwm) (fig. 485) ; and 
the lower lip of three petals, which are also, either entire as in 
the Rosemary (jig. 486), or bifid as in some species of Lamiwm, 
or trifid as in Galeobdolon (fig. 487). When a labiate corolla has 
its upper lip much arched, as in the White Dead-nettle (fig. 484), 
it is frequently termed ringent or gaping. The labiate corolla 
gives the name to the natural order Labiatez, in the plants 
belonging to which it is of almost universal occurrence. It is 
found also in certain plants belonging to some other orders. 
2. Personate or Masked,—This form of corolla resembles the 
labiate in being divided into two lips, but it is distinguished by 
the lower lip being approximated to the upper, so as to close 
the orifice of the tube or throat. This closing of the throat is 
caused by a projection of the lower lip called the palate (fig. 
488, 1). Examples occur in the Snapdragon (jig. 488), and the 
Toadflax (jig. 489). In the species of Calceoluria the two lips 
become hollowed out in the form of a slipper, hence such a 
corolla, which is but a slight modification of the personate, is 
sometimes termed calceolate. 
Fic. 488, Fic. 489. Fig. 490, 
(iN 
J 
Fig.488, Personate corolla of the Snapdragon (Antir- 
rhinum). l. Lower lip. u. Upper lip. 6. Gibbous 
base, Fig. 489. Personate corolla of the Toad- 
flax (Linaria), spurred at its base. Fig. 490, 
Ligulate corolla of a Composite flower, with five 
teeth at its apex. 
3. Ligulate or Strap-shaped.—lf what would otherwise be a 
tubular corolla is partly split open on one side, so as to become 
flattened like a strap above ( figs. 490 and 491), it is called ligulate 
or strap-shaped. This kind of corolla frequently occurs in the 
florets of the Composite, either in the whole of those constitu- 
ting the capitulum, as in the Dandelion ( Leontodon) ; or only in 
some of them, as in the outer florets of the Ox-eye ( Jig. 491). 
The apex of a ligulate corolla has frequently five teeth indica- 
ting the number of its component petals (fig. 490). 
