148 
RUMEX 
linear-lanceolate, margins somewhat crenulate, acute to acuminate; of the inflorescence, long and 
lanceolate to linear. Inflorescence with many, long, narrow leaves; whorls many-flowered, more or 
less interrupted especially in the lower half and often quite to the top. Pedicels jointed below 
the middle, thickened towards the top. Flowers larger than in R. maritimus ; appearing in early July. 
Fruiting segments narrowly ovate, toothed below; teeth narrow, about as long as the segment is 
broad ; each segment with a large, oval or oblong-oval, reddish tubercle ; becoming tawny yellow 
in August. Achenes broadly ovate, acute, dark brown, larger than in R. maritimus. 
Some botanists regard R. limosus as a hybrid of R. glomeratus and R. maritimus (see Gillot et Parmentier in Bull. 
Soc. Bot. France , xliv, 325—339 (1897); Beck in FI. N,Oest. 319 (1890); Ascherson und Graebner Syn. iv, 756 (1912)). 
On the other hand, Nilsson (in Bot. Notiser 224 et seq., 
1887) and Rouy {FI. France xii, 79—80, 1910) oppose 
this view. Our own sympathies are with the latter 
authorities, partly on the ground that R. limosus often 
occurs in situations where one or both of its alleged 
parents are absent, and partly because, in all disputed 
cases, we prefer to reject theories of hybridism which 
are not supported by actual experiment. 
{a) R. limosus var. palustris Rouy FI. 
France xii, 79 (1910) > palustris Smith FI. 
Brit. 394 (1800)!, in sensu stricto ; Babington. 
leones : — Curtis FI. Lond. i, t. 63, as R. 
maritimus ; Sv. Bot. t. 706, as R. maritimus ; 
Syme Eng. Bot. t. 1213, as R. palustris ; Beck in 
Reichenbach Icon. t. 185, as R. limosus. 
The figure in Smith’s Eng. Bot. (t. 1932) 
named R. palustris is some other plant, probably 
some hybrid : Syme {op. cit.) says it is R. pra- 
tensis (= R. crispus x obtusifolius) but that the 
enlargements are correct for R. palustris. 
Camb. Brit. FI. ii. Plate 151. (a) Flowering 
shoot, (b) Lower leaf. ( c ) Flowers (enlarged). 
(d) Persistent perianth -segments (enlarged). 
Huntingdon (E. W. H.). 
Exsiccata : — Fries, ii, 52, as R. palustris. 
{b) R. limosus var. thuilleri Rouy FI. 
France xii, 79 (1910); R. limosus Thuiller loc. 
cit. in sensu stricto ; R. palustris x maritimus 
Nilsson in Bot. Notiser 234 (1887); R. limosus 
x maritimus Murbeck in Bot. Notiser 34 (1889). 
Exsiccata: — Billot, 1760 et 1760 bis, as R. palustris ; Wirtgen, xv, 839, as R. palustris. 
Branches more slender. Inflorescence with whorls less separate especially towards the top, and 
with more flowers. 
This variety is in some ways intermediate between R. palustris Smith {in sensu stricto) and R. maritimus L. ; but 
whether it is a hybrid of R. maritimus and R. palustris Smith, or a bridging variety, we are unable definitely to state. 
River-banks, marshes, fens, margins of ponds ; in lowland districts only ; chiefly in eastern 
England. Cornwall (rare), Dorset, and Kent to Lancashire and Yorkshire, Northumberland ; not 
recorded for Scotland, Wales, or Ireland. 
Sweden, Denmark, Germany, Holland, Belgium, France, central Europe, Russia, southern Europe; 
Asia. 
R. limosus y. obtusifolius Murbeck in Bot. Notiser 35 (1899); R. obtusifolius x palustris Celakowski 
Prodr. FI. Bohm. 158 (1867); Nilsson in Bot. Notiser 231 (1887); R. conglomerate x maritimus x obtusifolius 
Beck in Reichenbach Icon, xxiv, 45 (1904); Ascherson und Graebner Syn. iv, 761 (1912). 
leones: — Beck op. cit. t. 189, fig. 1 — 3, as R. limosus x obtusifolius. 
Stem taller than in R. limosus. Laminae broader. Fruiting segments larger, rather regularly 
toothed, teeth stouter. 
Cambridgeshire. 
Hungary. 
