40 BRITISH BOTANY. 



tire or faintly toothed, rough with short trifid hairs. Calyx about 

 half as long as the pedicel. Limb of the petals about as long as 

 their claws. Clusters elongate. Pods 4-angled, longer than their 

 pedicels, spreading, erect (the pedicels are nearly horizontal, and 

 the pods form with them a more or less obtuse angle) . Seeds 

 ovate-cylindrical, not winged. 



Fields. Annual; June-October. 



E. orientale, Br. — K. perfoliatum, Crantz. Smith says, Eng. 

 Fl. vol. iii. p. 202, " I find no such name anywhere in Crantz.'^ 

 Hare's-ear Treacle Mustard. — e.b. 1804. 



Of very uncertain occurrence. It has been noticed in some of the 

 southern counties of England. 



Stem erect, simple or branched, 1-2 feet high. Root-leaves 

 obovate, petiolate. Stem-leaves elliptical, cordate and auricled 

 at the base, slightly notched at the apex. Calyx slightly gibbous 

 at the base, as long as the peduncle. Petals cuneate. Pods in a 

 long, lax cluster, on thick spreading stalks, very much elongate, 

 turgid, glabrous, tapering towards the apex. Seeds shagreened, 

 not winged. 



In fields and clifi's near the sea. Smith, in the Eng. Fl., quotes 

 the authority of Petiver, Hudson, and Dale, who found it in Essex, 

 Sussex, and Suffolk respectively. In flax -fields. Dingle, Kerry. In 

 France it is found in dry calcareous fields. 



Sisymbrium, Lin. — Annual or biennial plants, with more or less 

 pubescence or hairiness. Leaves entire or toothed, pinnatifid 

 or pinnate, stalked or sessile. Flowers white or yellow. Sepals 

 slightly spreading or erect, not gibbous. Stigma entire or 

 notched. Pod linear-cylindrical, with convex valves, which have 

 3 longitudinal nerves, with several indistinct lateral nerves. Seeds 

 ovate or oblong, in one row (one or two rows, not winged, Grenier 

 et Godron). 



t Flowers white. 



S. thalianum, Gay et Monnard in Gaud. Helv. 4. p. 348 — 

 Arahis Thaliana, Lin., l.b.s. 88. Wall-cress. — e.b. 901. 



A. 18. C. 80. Lat. 50-60°. Alt. 0-300 yds. Tern. 51-45°. 



Stems solitary or several, usually branched, slender, erect, 

 with few leaves, hairy below, glabrous above. Root-leaves ovate- 

 oblong, in a rosette, often decayed before the plant flowers, laxly 

 toothed. Stem-leaves oblong, entire and sessile. Pods spreading, 

 cylindrical, curved, longer tJian their pedicel. Seeds minute. 



