134 DIDYNAMIA— ANGIOSPERMIA. Antirrhinum. 



A. arvense, a very different plant, " wild," though he does not 

 say in Britain, caused Mr. Hudson to introduce that also into 

 his Flora. 

 According to Dr. Hooker, Mr. Hopkirk has observed some regular 

 Jlowers in A. repens. The whole genus is more or less subject 

 to this metamorphosis ; see the next species. A fasciculated 

 stem is also frequent in the upright perennial kinds. 



5. A. Linaria. Common Yellow Toadflax. 



Leaves linear-lanceolate, crowded. Stem erect. Spikes 

 terminal. Flowers imbricated. Calyx smooth, shorter 

 than the spur. 



A. Linaria. Linn. Sp.Pl.SbS. JVilld. v. 3, 253. Fl. Br. 660. Engl. 

 Bot. V. 1 0. t. 658. Curt. Lond.fasc. 1 . t. 47. Mart. Rust. t. 93. 

 Woodv. suppl. t.22l. Hook. Scot. 188. Fl. Dan. t. 982. Bull. 

 Fr.t.26l. 



A. n. 336. Hall. Hist. r. 1. 145. 



Linaria. Riv. Monop. Irr. t. 82. f. 1 . 



L. lutea vulgaris. Raii Syn. *28 1 . Ger. Em. 550, /. 



L. vulgaris. Ait. H. Kew. ed. 2. v. 3. 17. 



Osyris. Fuchs. Hist. 545. f. Ic. 310. Matth. Valgr. v. 2. 550. 

 Camer. Epit. d'SO.f. 



/3. Peloria. Linn. Am. Acad. v.\.55.t.3. Engl. Bot. v. 4. t. 260- 

 Curt. Lond.fasc. 6. t.4\. 



In hedges and the borders of fields, on a gravelly soil, frequent. 



/3 occurs occasionally, increasing for a time by roots, but is not 

 perpetuated by seed. 



Perennial. June, July. 



Root creeping, somewhat woody. Herh smooth, bright green, 

 scarcely at all glaucous. Stems 2 feet high, densely clothed, 

 vi^ith irregularly set, narrow, acute leaves, and terminating in a 

 close upright spike of rich yellow, inodorous, bracteated^oujers; 

 the palate downy and orange-coloured ; the spur of each as long 

 as the tube, pointing perpendicularly downwards, and 5 times 

 • the length of the calyx. Each cell of the ovate capsule opens 

 ■with 4 or 5 lanceolate valves. 



T curious variety /3, vvith a five-cleft, regular, five-spurred co- 

 rolla, and five equal stamens, made a great noise in Sweden, 

 when first discovered, and narrowly escaped being exalted, by 

 Linnaeus, into a new genus. It has however been found on the 

 same plant with^owers that are naturally formed, see Engl. Bot. 

 t. 658, and proves in a garden a very changeable and transient 

 variety. The same alteration has been observed in several other 

 species. 



