196 TETRADYNAMIA— SILIQUOSA. Sisymbrium. 



Erysimum. Tourn. t. 111. 



Cal. nearly equal at the base, somewhat spreading ; leaves 

 oblong, concave, slightly coloured, deciduous. Pet. obo- 

 vate-oblong, obtuse, undivided, flat ; claws nearly the 

 length of the calyx. Filam. thread-shaped, simple, dis- 

 tinct, erect. Anth, oblong-heart-shaped, a little spread- 

 ing. Germ, linear, slender, sessile. Style very short. 

 Stigma capitate, notched, permanent. Pod linear, round- 

 ish, or slightly angular ; valves linear, concave, wavy ; 

 partition narrow, membranous. Seeds ranged alternately, 

 forming a single row, numerous, small, ovate, or oblong, 

 not bordered ; cotyledons flat, incumbent, sometimes 

 (according to Mr. Brown) obliquely. 



Annual or perennial herbs, very various in foliage. Fl. yel- 

 low or whitish, mostly small. Pods erect, in very iong 

 clusters. Flavour pungent, not fetid. 



1. S. officinale. Common Hedge-mustard. 



Pods pressed close to the main stalk, awl-shaped, downy. 

 Leaves runcinate, hairy. Stem rough with reflexed 

 bristles. 



S. officinale. Scop. Cam. ed. 2. v. 2. 26. Br. in Ait/H. Kew. v. 4. 



111. DeCand. Syst. v. 2. 459. Comp. ed. 4. 1 12. Hook. Scot. 



202. 

 Erysimum officinale. Linn. Sp. PL 922. Willd. v. 3. 509. Fl. Br. 



706. Engl. Bot. v.W.t. 735. Curt. Lond. fasc. 5. t. 50. Woodv. 



suppl. t. 244. Fl. Dan. t. 560. Bull. Fr. t. 259. 

 E. n. 478. Hall. Hist. v. 1 . 208. 

 E. Dioscoridis Lobelii. Ger. Em. 254./. 

 E. vulgave. Bauh. Pin. 1 00. Moris, v. 2. 21 8. sect. 3. t. 3./. 1 . 

 Eruca hirsuta, siliqua cauli adpressa. Erysimum dicta. Rail Syn. 



298. 

 Verbena foemina. Trag. Hist. 102./; but not of Brunfelsius. 

 V. recta sive mas. Fuchs. Hist. 592./ 

 Irio sive Erysimum Dioscoridis. Lob. Ic. 206. f. Dod. Penmt 



7\A.f. ^' 



Hedge Mustard. Petiv. H. Brit. t. 46. f. 3. 



In waste ground^ by road sides, and on banks, common. It 

 springs up wherever houses have been burnt, as Haller records. 



Annual. June, July. 



Herb of a dull green, minutely hairy, or downy. Stem solitary, 

 2 feet high, erect, with numerous horizontal branches, leafy, 

 round, clothed with fine deflexed bristles. Leaves lyrate, their 

 lobes runcinate, unequally toothed ; the upper ones narrowest. 

 Fl. pale yellow, small, in little corymbose heads, soon becoming 

 very long straight close clusters, of erect, tapering pods, finelv 



