CRUCIFERAE. 2038 
the apex where the two lobes of the wings are contiguous or 
slightly overlapping at the tips; wing gradually increasing in 
width from the base (where it begins abruptly) to the apex; style 
extremely short, not nearly so long as the lobes of the wings. Seeds 
5 to 8 in each cell of the pod, irregularly ovoid-lenticular, with 
raised concentric ridges. 
A weed in cultivated fields. Rather rare, but generally distri- 
buted throughout Britain. 
England, Scotland, Ireland. Annual. Summer, Autumn. 
Stem erect or ascending, 1 to 2 feet high, simple or slightly 
branched. Lowest leaves oblanceolate or obovate, attenuated at 
the base so as to be almost stalked; the rest of the leaves oblong, 
lanceolate, or elliptical, produced at the base into 2 acute diverging 
auricles, the margins in all remotely toothed or entire. Flowers 
white, about 4 inch across. Petals about half as long again as 
the sepals, spatulate, truncate, or faintly emarginate at the apex. 
Fruiting raceme long. Pedicels spreading, 3 to # inch long. Pods 
nearly flat, $ to $ inch in diameter including the wing, or excluding 
it + to 2 inch long by about 2 inch broad, so that were the pod not 
winged its shape would be oval or obovate-oblong; wing with a 
fine marginal nerve running round the edge. Seeds very dark 
brownish black, punctured, and also with 4 or 5 concentrie ridges 
on each face. Whole plant glabrous and slightly glaucous. 
Field Penny Cress, Mithridate Mustard. 
French, Zabouret des Champs. German, Feld-Pfennighraut. 
When chewed the Penny Cress is slightly acrid, with somewhat of the odour and 
flavour of onion or garlic; and having been used in sauces, it was called by the general 
name Mustard. The name “ Mithridate” was prefixed to it because Mithridate, king of 
Pontus, was a famous mediciner, who compounded poison-resisting draughts and gave 
them to himself. Many popular medicines have been named after this worthy. 
SPECIES IL—THLASPI PERFOLIATUM. Linn. 
Pratt CXLV.* 
Reich. Ic. Fl. Germ. et Helv. Vol. II. Tetr. Tab. V. Fig. 4183. 
No rootstock. Stem leaves deeply cordate at the base. Pods 
(including the wings) deltoid-obovate, obcordate, with a broad 
triangular sinus at the apex between the two lobes of the wings; 
* The Plate is E. B. 2354, unaltered. 
