HEXANDRIA— TRIGYNIA. Tofieldk. 197 



a very distinct species, Haller's n. 1598, R. arifoUus of AUioni, 

 if not of Willdenow, whose petals are orbicular-heart-shaped, 

 destitute of tubercles. The whole plant is twice the size of the 

 common R. Acetosa, with divaricated lobes to the leaves. Welsh 

 specimens require to be examined. It is reported that several 

 species have, in Germany, been confounded under the present; 

 but I know not on what their distinctions depend, nor whether 

 we possess more than one in Britain. Professor Hooker appears 

 to describe a different plant from mine. /'^^^ tny{,iv h.liL'] 



10. R. Acetosella. Sheep's Sorrel. 



Flowers dioecious. Leaves lanceolate, hastate. Permanent 

 petals without tubercles. 



R. Acetosella. linn. Sp. P/. 481. PFilld. v.2.260. Fl.Br.396. 



EngLBot. V. 24. t. 1674. Curt. Lond. fasc.5. t. 29. Hook. Scot. 



113. Ehrh. PL Off. am". 

 Lapathum n. 1596. Hall. Hist. v. 2. 274. 

 L. acetosum repens lanceolatum. Rail Syn. 143. 

 Oxalis sive Acetosa minor. Matth. Valgr. v. 1. 406. /. Carrier. 



Epit.2Sl.f. 

 O. tenuifolia. Ger. Em. 397./. 

 O. minor. Ibid. 393./. 



O. tenuifolia sinuata vervecina. Lob. Ic. 291./. 

 O. parva auriculata repens. Bauh. Hist. v. 2. 992./. 



In dry gravelly pastures and fields, abundantly. 



Perennial. June, July. 



Not half the size of the last. Roots creeping. Stems wavy, branch- 

 ed, slender, leafy, often decumbent. Leaves more or less stalk- 

 ed ; the lower ones hastate, with narrow spreading lobes, entire ; 

 tipper for the most part simply lanceolate ; in autumn they all 

 turn red. Fl. small, separated, on different roots, in numerous, 

 whorled, leafless clusters. Pet. oblong, entire, all destitute of 

 tubercles. Seed light brown, polished, with 3 blunt angles. This 

 herb is acid, with some astringency, like the preceding, but its 

 much smaller bulk causes it to be generally neglected. 



205. TOFIELDIA. Scottish Asphodel. 



Huds.\57. Fl.Br.397. Tr. of L. Soc. v. 12. 23S. DeCand. Ft. 



V.3. 193. 

 Anthericum. Linn. Gen. ed. 1. 106. 

 Narthecium. Juss. 47. Lam. t. 268. 



Nat. Ord. Coronarice. Linn. 10. Asphodeli. Juss. 16. Me- 

 lanthacecB. Br. Pr.272. Hook. Scot. 182. 



Cal. inferior, small, of 1 leaf, membranous, three-cleft, per- 

 manent. Pet. 6, oblong-, concave, equal, spreading, per- 



