CRUeiFERiE. 41 



ovate-round, not striated. Sandy fields, banks, and walls. An- 

 nual; April-June. 



S. Alliaria, Scop. — Alliaria officinalis, DC. Erysimum Al- 

 liaria, Lin. — l.b.s. 107. Jack-by-the-Hedge. — e.b. 796. 



A. 17. C. 75, Lat. 50-58°. Alt. 0-200 yds. Tem. 52-47°. 



Stems erect, simple or branching above, solitary or several, 

 hairy below, leafy. Leaves cordate or reniform, with broad teeth 

 (crenatures), the lower on long petioles. Flowers larger than is 

 usual in the British species of this genus. Pods spreading, 

 erect, above six times as long as their pedicels. Seeds oblong, 

 striated, truncate obliquely at both ends. 



Hedges and ditches. Biennial ; April-June. 



ft Floioers yellow. 



S. officinale, Scop. Hedge Mustard. — e.b. 735. l.b.s. 102. 

 A. 18. C. 81. Lat. 50-60°. Alt. 0-200 yds: we believe we liave 

 seen it at this altitude in Scotland. Tem. 52-46°. 



Root very long, hard, and tapering. Stems several or soli- 

 tary, erect, rigid, simple, branching above the middle ; branches 

 often spreading horizontally. Root-leaves runcinate-pinnate (the 

 direction of the pinnae, or wings, is toward the centre of the plant, 

 viz. the stem), with angular, unequally-toothed lobes; the ter- 

 minal lobe is large, hastate, with narrow lateral lobes. Petals 

 small, but larger than the sepals. Pods oblong, conical, hairy, 

 closely applied to the stem, tapering into a slender point, and on 

 a thick short pedicel. 



Waysides and waste places near dwellings. Annual ? Bien- 

 nial ? May-September. 



S. Irio, Lin. London Rocket.* — e.b. 1631. l.b.s. 103. 

 A. 3. C. 7. Lat. 51-56°. Alt. 0-50 yds. Tem. 49-48. 



Stem erect, simple or branching above, glabrous or slightly 

 pubescent, leafy. Root-leaves runcinate-pinnate, with 5-11 ob- 

 long, toothed leaflets (lobes) ; the upper ones hastate, with nar- 

 row lobes, the terminal leaf oblong-lanceolate, entire or sinuate. 

 Petals longer than the calyx. Pods glabrous, linear, slender, 

 spreading, ascending, five times as long as their pedicel, curved. 



At the base of walls and waste places near towns ; rare. An- 

 nual; June-July. 



* The London Rocket of certain villages near London, Southgate for example, 

 is Hesperis matronalis, or some Hesperis. We have seen it in cottage gardens, 

 emulating the more famed Brompton Stock, to wliich indeed it was a not insignifi- 

 cant rival. 



6 <j 



