110 
distributor’s report for 1952 
lorm of r. uvinilurr. — J. |). (Irose. ‘‘1 coiisidor this to be P. axurvinrc 
li., although some speeimejis look very like P. ruriva(jumP — D. W. 
Jo WKTT. 
Pol !l(joii'uni rurivayum Jord. 7, N. Wiltshire; stubble, Bishopstone 
Downs, September 5tli 1952 (Bcf. No. 6259). This species is not always 
easily distinguished from narrow-leaved forms of P. avicvlare. 'I’he 
habit, however, is characteristic. Jlony {Flore de France, 12, 114) 
states of P. rurivagum “tiges . . . flexneuses en zigzag” — a description 
which aptly applies to the present gathering. — J. D. Grose. “Certainly 
P. rurivagxim , showing the characteristic long ochreae and conspicuous 
veins on the underside of the leaf.” — D. W. Jowett. 
J^olggonv )n aequale Lindm. 8, S. Wiltshii'e; timber yard, Nur.steed, 
Augirst 27th 1952 (Ref. No. 6235). Narrow-leaved form. — J. D. Grose. 
“Yes, P. aequale. 1 wonder if this is the sort of material C. E. Moss 
would have described as subvar. parvulum . The specimens arc strongly 
infected with [Jrowyees polygoni Fckl. Some diseased leaves appear to 
be comj)letely killed. vSmith (1945, J. EcoL, 33, 120) states that the 
fungus has no ecological significance.” — D. W. Jowett. 
Polygonum aequale Lindm. 8, S. Wiltshire; track near Bryth Copse, 
September 3rd 1952 (Ref. No. 6236). A form induced by partial burial 
in trampling; cf. No. 6262. — J. D. Grose. “R. aequale. I have found 
a lot of material of this type and do not c’onsider it at all atypical. The 
nuts have two convex sides and one concave. It is commoner to find 
P. aequale with nuts having one convex and two concave sides and most 
Horas describe the nut in this wa}'. It is interesting to note that Lind- 
nian, in his own key (1918, Sven.'xic Fanerogain flora , 1st ed., p)). 212-219, 
Stockholm), describes them as having two convex sides, the third len- 
cave.” — D. W. Jowett. 
Polygonum aequale Lindm. 7, N. Wiltshire; Bishopstone Downs, 
September 5th 1952 (Ref. No. 6240). An elongated form of a steep slope 
induced by complete burial after a heavy storm. The habit of P. axu- 
radare growing with it was identical. — J. D. Grose. “The nuts are 
immature but 1 should say it is P. aequale.^’ — D. W. Jowett. • 
Polygonxixxi aeqimle Lindm. 7, N. Wiltshire; damp ground, Bishoj)- 
stone Downs, September 5th 1952 (Ref. No. 6241). A luxuriant form 
induced by moist conditions. — J. D. Grose. “Very luxuriant but shows 
most of the characters of P. aequale. The undersides of a number of 
leaves bear a small growth of Erysiphe polygoni DC.” — D. W. Jowett. 
Polygonum aequale Lindm. 8, S. Wiltshire; track, Casterley Camp, 
September 29th 1952 (Ref. No. 6262). A form induced by severe over- 
crowding.^ — J. D. Grose. “Yes, very nice specimens of P. aeqxiale.”-- 
D. W. Jowett. 
