374 
LXXII. POLYGON ACEAS. 
\_Rumex. 
Here the enlarged sepals are truly cordate. There seem to be two 
forms of this plant, one on the sea-shore, conspicuous by its large pale 
tubercles ; the other and more usual kind having them orange- 
coloured. 
3. R. pratensis Mert. et Koch ( Meadow D.) ; enlarged sepals 
unequal cordate dilated toothed at the base with a small entire 
triangular point, one principally with a tubercle, leaves oblong- 
lanceolate waved, whorls distinct nearly leafless. Burr, in 
E. B. S. t. 2757. 
Marshes, in several counties of England. Berwick-upon-Tweed ; 
Kill in ; Glen Farg. If-. 6, 7. — Allied to R. crispus, but the 
whorls are less crowded, the enlarged sepals are unequal in size and 
more distinctly toothed, and the leaves are broader and less curled ; 
also allied to It. obtusifuliits, but is distinguished by the triangular, 
not Ungulate, entire portion of the enlarged sepals. Mr. Babington 
mentions that the enlarged sepals are sometimes all equally tubercled. 
All the specimens tve have seen from this country appear to be 
hybrids between the last and the next species. Koch suspects that 
his plant is in the same predicament, and according to Wallroth it 
never bears perfect fruit. 
4. R. obtusifvlius L. ( broad-leaved D.) ; enlarged sepals ovate 
or oblong-triangular obtuse toothed at the base, one principally 
bearing a tubercle, root-leaves ovato-cordate obtuse, upper ones 
oblong or lanceolate, stem roughish. E. B. t. 1999. 
Wav-sides and waste places, too frequent. If.. 7 — 9. — Stem 
2—3 feet high. Whorls rather distant, lower ones somewhat leafy. 
Distinguishable by its broad and obtuse radical leaves, which are 
generally crisped at the margins. The entire terminal part of the 
enlarged sepals is, as Mr. Borrer observes, mostly oblong or almost 
Ungulate. Stem scabrous between the elevated lines or ridges. 
5. R. aquations L. (grainless Water D.) ; enlarged sepals 
broadly cordate entire or waved membranous reticulate 
without tubercles, leaves lanceolate, the lower ones cordate- 
oblong crisped and waved, whorls crowded mostly leafless. 
Hook, in E. B. S. t. 2698. R. Iiippolapathum Fries. 
Moist places. North of England and Scotland, not uncommon. 
11 . 7,8. — Our plant comes very near R. crispus, but the enlarged 
sepals are quite destitute of grains or tubercles. Between this and 
the last there is a hybrid not uncommon in Kinross-shire, particularly 
in the parish of Orwell, which sometimes bears a few perfect seeds; 
the enlarged sepals are membranous, reticulate, broadly cordate, 
toothed, with sometimes a short blunt entire ovate point, one princi- 
pally bearing a tubercle ; it does not accord precisely with any of the 
species or hybrids noticed by Dr. Meisner in De Candolle’s l’ro- 
dromus, vol. xiv. 
6. R. * alpinus L. (alpine I)., or Monk's Rhubarb’) ; enlarged 
sepals cordate- ovate membranous reticulate obscurely toothed 
