HEXANDRIA— TRIGYNIA. Tofieldia. 197 



a very distinct species, Haller's n. 1598, R. arifolius of Allioni, 

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

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

 common It. 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 j 

 but 1 know not on what their distinctions depend, nor whether 

 wc possess more than one in Britain. Professor Hooker appears 

 to describe a different plant from mine. 



10. R. Acetosella. Sheep's Sorrel. 



Flowers dioecious. Leaves lanceolate, hastate. Permanent 

 petals without tubercles. 



R. Acetosella. Linn. Sp. PL 481 . WiUd. v. 2. 260. FL Br. 396. 



Engl.Bot. V. 24. t. 1674. Curt. Loud, fasc.o. t. 29. Hook. Scot. 



113. Ehrh. PI. Of . 404. 

 Lapathum n. 1596. Hall. Hist. v. 2. 2/4. 

 L. acetosum repens lanceolatum. Rati Syn. 143. 

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



Epit.23\.f. 

 O. tenuifolia. Ger. Em. 307./. 

 O. minor. Ibid. 308. f. 



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 loiver ones hastate, with narrow spreading lobes, entire ; 

 7ipper for the most part sim))ly 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. 157. FL Br. 397. Tr. of L. Sue. v. 12. 238. DeCand Fr 



r.3. 193. 

 Anthericum. Linn. den. cd. 1. 106. 

 Narthccium. Juss. 47. Lam. t. 268. 



Nat. Ord. Coronnricv. TJnn. 10. /hplunUl}. Juss. 16. Mc- 

 lanthaccd'. \\\\ Pr. 272. Hook. 8cot. IS2. 



CaL inferior, small, of I kal", membranous, tlircc-cloft, per- 

 manent. Pet. 6, oblon«;, concave, r(|ual, >pnadiii«% per- 



