TETRADYNAMIA— SILIQUOSA. Cheiraiilhus. 205 



Cal. converging, compressed ; leaves oblong, concave, erect, 

 deciduous, 2 opposite ones protuberant at the base. Pet, 

 obovate, spreading, entire or slightly notched; claws 

 erect, the length of the calyx. Filam. awl-shaped, pa- 

 rallel, simple, distinct, each of the 2 outermost, or short- 

 est, embraced at the bottom by a nectariferous gland. 

 Anth. erect, oblong-arrow-sha|3ed, acute, of 2 linear lobes. 

 Germ, linear, compressed, a little tumid at each side, the 

 length of the stamens. Style sliort, nearly cylindrical. 

 Stigma either of 2 thick spreading lobes, or capitate and 

 slightly notched, permanent. Pod linear, compressed, 

 two-edged, rather convex at the sides, mostly with an 

 elevated, longitudinal, central line ; valves straight ; par- 

 tition membranous. Seeds ranged alternately, in a single 

 row, ovate, compressed, slightly bordered at the summit, 

 and often at one side also ; cotyledons accumbent. 

 Biennial or perennial, herbaceous or somewhat shrubby. 

 Stem branched, leafy, round, or slightly angular. Leaves 

 lanceolate, entire or toothed. Pubescence close, simple, 

 or divaricated, or somewhat starry. FL handsome, fra- 

 grant, yellow, purplish, or white, often particoloured, or 

 changeable. Ch. tenuifolms of DeCandolle has a slight 

 border at the top of the seed only. 



1. Ch.fniiiculosus. Wild Wall-flower. 



Leaves lanceolate, acute ; most hoary beneath, with simple 



close hairs. Stem shrubby. Branches angular. Style 



prominent. 

 Ch. fruticulosus. Linn. Mant. 94. Willd. Sp. PL v. 3. o 16. FL 



Br. 709. EfigL Bot. v. 27. t. 1934. Comp. ed. 4. 1 13. Hook. 



Scot. 202. Galp. Comp. 50. Davies Welsh BotanoL fi4. 

 Ch. Cheiri. Huds. 287. With. 580. Belh. 260. Sihth. 202. Abbot 



144. Hook. Lond. t. 147 } DeCand. Si/sL v. 2. 180, var. /x. 

 Leucojum n. 443. HcdL Hist. v. 1. 193j from Mr. Davall and 



others. 

 L. luteum, vulgo Cheiri, floie simplici. Raii Syn. 20 1 . Bauh. Hist. 



t\ 2. 572. /. rcj)rinted in Chabr. h\ 27^. f. 4. 

 L. lutcum minus fruticans. BarrcL Ic. t. 1228. 

 y'whi petraea lutca. Tabtrn. Kraulcrb. 6SS.f. 



On old walls. 



Shrub. ApriL May. 



Stem shrubby, erect, bushy, branched in a determinate manner ; 



• branches angular, leafy, hoary with close, bristly, sih-ery hairs, 



chiefly directed downward, like those on both sides of the leaves; 



though some i)oint the contrary way. on the Icavvs as well as 



