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2. ANTIRRHINUM PURPUREUM. 



PURPLE TOADFLAX. 



THIS genus includes various plants of the herbaceous flowery 

 tribe, commonly known by the titles of Snap-Dragon, Calf's-Snout, 

 and Toad-Flax, or Frogs-Mouth. 



It belongs to the class and order Didynamia Angiospermia, and 

 ranks in the natural order of Persoiiatce. 



The characters are: that the calyx is a five-parted permanent 

 perianthium : the divisions oblong, the two lowermost gaping: the 

 corolla is monopetalous and ringent: the tube oblong, swelling, and 

 opening above with a mouth having two lips, the upper one two- 

 parted and reflex on each side, the under one trifid and obtuse: the 

 palate convex, usually closed by a prominency between the lips, 

 produced from the under lip, the throat being concave beneath, hav- 

 ing a prominent nectarium at the base of the corolla, produced 

 downwards and prominent: the stamina consist of two short and two 

 long filaments, enclosed under the upper lip; the antherae converg- 

 ing: the pistillum a roundish germ, style simple, of the length and 

 in the situation of the stamens: the sligrna obtuse: the pericarpium 

 a roundish capsule, obtuse, two-celled, of different form and aper- 

 tuie in the different species: the seeds numerous: the receptacles 

 uniform, solitary, and affixed to the partition. 



The species of most importance for cultivation are: 1. A. linaria, 

 Common Yellow Toad-Flax ; 2. A. cymbalaria, Ivy-leaved Toad- 

 Flax ; 3. A. triphyllum, Three-leaved Toad- Flax; 4. A. purpurcum, 

 Purple Toad-Flax; 5. A. monspessulamim, Montpellier Toad-Flax ; 

 6. A. spar t turn, Branching Toad-Flax ; 7- A. triste, Dark-flowered 

 Toad-Flax; 8. A. pelisserianutn, Violet-coloured Toad-Flax; 9- A. 

 multicaule, Many-slalked Toad-Flax; 10. A. alpinum, Alpine Toad- 

 Flax ; 11. A. dalmaticum, Dalmatian Shrubby Toad-Flax; J2. A. gc- 



