72 
S. disarticulata are always solitary, which seems to be the case, 
these plants must be of hybrid origin, as all have one or more 
spikelets unmistakably three-flowered. — W. C. Barton. My two 
specimens — only in flower — are entirely single-blooming, and no 
trace of any mixed parentage is visible. — E.S.M. 
Polygonum \aviculare L., ? sub-sp. Roberti Loisel.l. (non auct. 
Angl.). Grassy ground by Cranbrook Rd., Bristol, W. Glos., v.c. 
34, Aug. — Oct. 1917. Name suggested at Kew. No fruit de- 
veloped well during the wet autumn. Stems erect, short, bearing 
numerous large leaves and rather large pink flowers all down the 
stem. Several authors are mistaken in attributing Loiseleur’s 
name to the P. Roberti which = P. Rail Bab. — H. S. Thompson. 
This can hardly come under P. aviculare. As far as the material 
goes (it is much better than what Mr. Thompson sent to me 
direct), the description in Rouy, “FI. Fr.” XII. Ill, seems to 
agree well enough ; but fruit is indispensable. — E.S.M. Surely 
something else. Is it not an alien ? — A.B. 
P. aviculare L., var. litomle (Link). On sands of shore just 
above high water mark, Ballywalter, Co. Down, v.c. 38, Sept. 21, 
1917. All the specimens from one large plant 3 or 4 feet across, 
half buried in sand. Nuts finely striate, flowers bright pink — a 
beautiful plant. — C. H. Waddell. The very marked growth of 
this plant, and its large, rugose, rather shining fruit seem to 
separate it specifically from P. aviculare L. — E.S.M. Probably 
correct, but there are no fruits to make it quite sure. — A.B. 
This appears to be the plant figured in “Camb. Brit. Flora,” 
t. 134, and labelled P. aviculare, var. litoi'ale Koch (1837). The 
description of this by Koch in 1857 (“Syn. fl. Germ.”, ed. 3, II. 
536) is curiously brief — “foliis crassiusculis.” — C.E.S. 
P. Raii Bab. Sands by shore, Ballywalter, Co. Down, v.c. 38, 
Sept. 21, 1917. Flowers white, in striking contrast to the bright 
pink of P. aviculare, var. litorale growing near by. — C. H. 
Waddell. 
Rumex crispus L., var. trigranulatus Syme Waste ground, St. 
Philip’s Marsh, Bristol, W. Glos., v.c. 34, June 22, 1917. — Ida 
M. Roper. Certainly. This seems to be mainly, if not wholly, 
submaritime. — E.S.M. I should hardly call this var. trigranulatus 
J. T. Boswell. The principal European varieties of R. crispus L. 
are : — 
a. typicus Beck, including var. trigranulatus Boswell ; 
/3. unicallosus Peterm. One valve calliferous ; 
