TETRADYNAMIA— SILICULOSA. Lepidium. 167 



/S. Near Warrington. Mr. D. Turner. 



y. Near Bath. Mr. Haviland. 



Annual. July. 



Root tapering. Herb more or less downy, and of a hoary or glau- 

 cous green; the pubescence short, simple, and prominent. Stem 

 erect, leafy, about a foot high ; branched in the upper part, ex- 

 cept in weak specimens. Lowest leaves obovate, soon wither- 

 ing; the rest sessile, arrow-shaped, acute at both ends, wavy 

 and toothed in the most common and downy variety ; in /3 nearly 

 smooth, and more entire. Fl. numerous, small, white, their co- 

 rymbs soon lengthened out into long clusters of upright, round- " 

 ish-oblongpoMc/ies, whose flat border, very narrow at the sides, 

 is much dilated, and cloven, at the upper edge, the style being 

 about equal in length to the lobes. The surface at both sides 

 of the pouch is covered with minute depressed scales, which 

 mark this species well, and are sometimes, in y, accompanied 

 by a few hairs, when it becomes Thlaspi hirtum of Hudson, but 

 not of Linnaeus. I have always found the seeds solitary in each 

 cell. For the cotyledons being incumbent, not accumbent as in 

 Thlaspi, 1 rely on Mr. Brown. 



4. L. hirtum. Hairy Mithridate Pepperwort. 



Pouch often hairy, not scaly, bordered at the summit. Style 

 prominent. Stem-leaves arrow-shaped, slightly toothed. 



L. hirtum. Comp. ed. 4. 1 1 0. DeCand. Syst. v. 2. 536. 



Thlaspi hirtum. Lin7i.Sp. PI. 90\. Willd. v.3.444. Fl Br 684. 

 Engl. Bot. V. 26. 1. 1 803. Hook. Scot i 95. 



T. Vaccarise incano folio perenne. Rail Syn. ed. 2. 175. ed. 3.305. 



T. villosum, capsulis hirsutis. Bauh. Pin. 106. Prodr. 47 .f. Mo- 

 ris. V.2. 297. sect.3. t. )8./. 27, copied from Bauliin. 



T. villosum. Matth. ed. Bauh. 430./. 



T. capsulis hirsutis. Bauh. Hist. v. 2. 922./. Chabr.Sciagr. 291,/ 

 copied from J. Bauhin. 



Hoary Cress. Petiv. H. Brit. t. 50./. ] 0. 



In fields on hilly ground. 



In mountainous situations in Wales, and elsewhere. Ray. In 

 Perthshire, near the seat of the Earl of Kinnoul. Mr. Miller, and 

 Mr. J. Mackay. By the river Earn, Perthshire, and the Esk, 

 between Brichen and Montrose, Angusshire. Mr. G. Don. At 

 Browston, Suffolk. Rev. G. R. Leathes. 



Perennial. June. 



Root woody and perennial, as Ray indicates. Stems several, simple 

 or branched, leafy, always finely hairy, as well as the leaves, which 

 resemble those of the last, but the obovate radical ones are more 

 numerous and permanent, on long slender footstalks. Inflores- 

 cence like the preceding, but the petals are larger. Pouch often 

 hairy at the sides, but the dilated terminal cloven border seems 

 to be always smooth, as are^ very frequently, the sides also, being 



