300 66. POXTGOITACE^. 



— ^Height 3 — 4 feet. L. very large. Whorls crowded, mostlj 

 leafless, forming a large dense lobed panicle. Nut elliptic. — In 

 the North of E. and m S., prefen-ing spots liable to be flooded, 



P. vir. viii. E. s. 



10. iJ. Hydrolap' athum (Huds.) ; enlarged pet. ovate-triangular 

 nearly entire all tuhercled, I. lanceolate acute tapering below, pe- 

 tioles flat but not with raised edges. — £, JB. 2104. — St. 3 — 5 

 feet high. L. often more than a foot long. Whorls crowded^ 

 mostly leafless. Nut elliptic. — Ditches and river-sides. P. 

 Vn. VIII. Great Water-Dock. E. S. I. 



11. -R. maximus (Schreb.) ; enlarged pet. triangular-cordate 

 denticulate below aU tubercled, radical I. oblong-acute ohliqiiely 

 cordate below, petioles flat or broadly channelled above with 

 raised edges.— -Sr!. 73. 16. J. of B. xii. t. 140.— St. 3—5 feet 

 high. L. very long, whorls crowded, mostly leafless. — Near 

 Lewes, Suss., ilfr. Borrer (Man. ed. i. 256), Hon. J.B. Warren 

 (1873). P. vn. VIII. E. 



*12. jR. alpinus (L.) ; enlarged pet. cordate-ovate membranous 

 entire or denticulate without tubercles, I. roundish-cordate blunt 

 with channelled petioles, upper I. ovate. — JE. B. S. 2694. — Whorls 

 crowded, mostly leafless. Nut elliptic. — Formerly cultivated. 

 P. VII. Monk's Mhubarh. E. S. 



* * Fl. dioecious or polygamous. Herbage acid. Sorrel. 



13. iJ. Acetdsa (L.) ; enlarged pet. roundish-cordate entire 

 membranous with a very minute tubercle at the base, Sep. rejlexed, 

 1. oblong sagittate, stipules laoiniate-dentate. — JE. B. 127. — 

 Height 1 — 2 feet. Whorls leafless. Nut elliptic with acute 

 angles.— Woods. P. V. VI. E. S. I. 



14. -R. Acetosel'la (L.) ; dicecious, petals scarcely enlarged ovate 

 not tubercled closely adpressed to met, Sep. ascending, 1. lanceolate- 

 hastate or linear with entire lobes, stipules torn. — H. B. 1674. — 

 Height 6 — 10 in. Whorls leafless. L. very variable in breadth. 

 — Dry gravelly places. P. V. — VH. Sheep's Sorrel. E. S. I. 



[B. scutdtm (L.), polygamous, 1. hastate-ovate slightly fiddle- 

 shaped, is naturalized near Edinburgh &c. Sy. E. B. 1222.] 



2. Oxte'ia Hill. Mountain-Sorrel. 



1. 0. renifdrmis (Hook.).— ^. B. 910.— St. 8—10 in. high, 

 usually leafless. L. radical, reniform, slightly notched at the 

 end ; veins radiating from the insertion of the long footstalk. 

 Pedicels thickening upwards, in a spikelike raceme. Permanent 

 pet. not enlarged. — Lofty mountains. P. VII. VIII. E. S. I. 



