RUM EX 
139 
Stem rigid. Laminae rather thick, wavy. Inflorescence with short, numerous, appressed branches ; 
whorls crowded. Fruiting segments rather smaller than in var. typicus, each with a prominent 
reddish-brown tubercle. 
Loose sand-dunes, shingle-beaches, dune-marshes, margins of salt-marshes ; rather common in most of the 
maritime counties of Great Britain, from Cornwall and Ker.t to Orkney; not recorded for Ireland. 
Sweden, central Russia, and doubtless elsewhere. 
(d) R. crispus var. planifolius Schur Enum. PI. Transsilv. 580 (1866). 
Stem nearly 2 m. high. Laminae of the ground-leaves almost or quite flat, not or scarcely 
undulate, about 2-25 dm. long and not more than a quarter as broad, more or less glaucous; of 
the stem-leaves, slightly undulate ; of the inflorescence-leaves, undulate, few. Inflorescence more 
crowded than in var. typicus , but with the whorls more distant and fewer-flowered than in var. 
trigranulatus. Flowers a little earlier than in var. typicus. Fruiting segments usually trigranulate. 
This is an interesting estuarine variety which the Rev. A. Ley brought to the notice of British botanists (sub no- 
minibus R. elongatus et R. crispus var. elongatus ; vide Bot. Exch. Club Brit. Rep. for 1882, p. 76; ibid, for 1884, p. 109; 
ibid, for 1910, p. 591). It is desirable that it should be grown under critical conditions in order to ascertain if it be a 
permanent variety or only a forma or state due to the special edaphic conditions of the habitat. 
Muddy estuaries, rare; Hampshire, Surrey, Middlesex, Gloucestershire, Monmouthshire. 
Waste places, road-sides, arable land, sand-dunes, shingle-banks, edges of salt-marshes ; very 
common, except on strongly calcareous soils ; recorded for every county in the British Isles ; ascending 
to 620 m. in Northumberland. 
Europe; Asia (excluding southern) to China and Japan; northern Africa (? indigenous); central 
and North America (naturalised); New Zealand (naturalised). 
R. condy lodes x crispus (p. 147) ; R. crispus xglomeralus (p. 144) ; R. crispus x longifolius (p. 137) ; 
R. crispus x obtusifolius (p. 1 4 1 ). 
R. crispus X pulcher Haussknecht in Nutt. Bot. Ver. TJiiir. xi, 60 (1897); Trimen in Journ. Bot. xvii, 
251 (1879) nomen ; Ascherson und Graebner Syn. iv, 760 (1912); x R. pseudo-pulcher Haussknecht loc. cit. 
leones : — Beck in Reichenbach Icon, xxiv, t. 191, fig. 4 — 6. 
A specimen, said to be of this parentage by Warren, is in Herb. Mus. Brit., from Broughton. 
We have observed plants at Chippenham, Cambridgeshire, which are intermediate between R. crispus and R. pidcher , 
and growing with these species. 
Rare and critical. Recorded also for central Europe, Montenegro, and Thessaly. 
8. *RUMEX ELONGATUS 
Rumex elongatus Gussone PI. Rar. Adriat. 150 (1826); R. crispus var. elongatus [Cosson ex] Battandier 
in Bull. Soc. France xxviii, 271 (1881); Trimen in Journ. Bot. xi, 237 (1873). 
leones : — Gussone, op. cit., t. 28. 
Perennial. Rhizome fusiform, white. Stem i’5 — 2’o dm. high, lax, subsimple. Petioles of the 
ground-leaves about as long as the laminae. Laminae oblong lanceolate, attenuate at the base, flat, 
about 20 — 30cm. long and 2 "5 broad; of the stem-leaves, almost linear, flat; of the inflorescence, 
linear, flat. Inflorescence strict, leafy below ; whorls distant, 5 — 8 flowered. Pedicels as long as 
the fruiting segments, slender. Flowers in June. Fruiting segments elongate, more or less sub- 
cordate at the base, entire, rather strongly reticulate, i-tubercled. Achenes elongate. 
It is unlikely that an eastern Mediterranean species such as this should be indigenous in England ; and, as its stations 
are all in close proximity to shipping, and also to Kew Gardens, it is more probable that the plant was originally introduced 
(no doubt unintentionally). It is interesting that it should also be naturalised in North America. 
Records for Hampshire and the mouth of the Severn refer to R. crispus var. planifolius. 
Tidal mud-banks of the river Thames, Middlesex (between Putney Bridge and Hammersmith Bridge). 
Sardinia, Italy, Sicily; northern Africa; Asia Minor; North America (naturalised). 
[/?. elongatus X obtusifolius C. E. Britton in Journ. Bot. xlix, 99 ( 1 9 1 1 ) nomen. 
A plant, purporting to be of this parentage, is mentioned as above in the Journal of Botany. The 
specimens are admitted to have been “ past flower and fruit.” Apart from this dubious record, the putative 
hybrid is unknown. It has to be admitted that the occurrence of such a hybrid, in the station for which 
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