202 
root leaves were three feet in length. The Woolly-headed Thistle 
is frequent in Somerset, especially on Lias and Oolite. Indeed 
the first British record, of Lobelius in 1570, spoke of it as 
Frequens haec in Anglice collibus strigosis agri Sommer seti. It is 
very rare in West Gloucestershire, but appears in most of the 
English counties from Durham to Somerset and Kent. 
Dr. Petrak, who is also desirous of sets of Menthae from 
Britain (in exchange), particularly wants specimens of the hybrid 
Cirsium britannicum x palustre ( Cnicus palustris Willd. x pratensis 
of the Loud. Cat.); and says that it can be recognised by the 
partial decurrence of the leaves, and by the larger heads than in 
palustris, but smaller than in britannicum. — H. S. Thompson. 
ADDITIONAL NOTES 
Report 1917, p. 72. Polygonum \aviculare L. 1 Subsp. Eoberti 
Loisel, non auct. angl.], Bristol, Oct. 1917. Coll. PI. S. Thompson. 
“ This is P. cognatwm Meisn. (a) alpestre C. A. Meyer.’’ — C.E.S. 
Report 1921 — 22, p. 169. Bubus durescens (Nos. 559 & 560) 
read E. calvatus Blox. — H.J.R. p. 170. Mr. Barton’s No. 548 
( Bubus rhombifolius ) should, as we now agree, be put to R. argenteus 
Wh. & N. Will members please correct ? — H.J.R. 
Report 1921 — 22, p. 177. Symphytum officinale x peregrinum. 
Coll. J. E. Little. “ 1 do not doubt that our late friend Bucknall 
would have passed it as his discolor .” — J.W.W. [ i.e . as one of the 
forms of S. officinale x peregrinum.] 
Report 1921 — 22, p. 180. Mercunalis ambigua L. fil. Coll. 
R. J. Burdon. On July 12, 1922, I visited with Preb. Burdon 
the locality from which the specimens of 1921 were taken. 
Examining the plants on the spot, we again found female plants 
with staminate flowers. One flower, dissected when we returned, 
was beyond doubt hermaphrodite. But the proportion of male 
flowers on the female plants is evidently very small, and in dried 
specimens they may easily be overlooked. At Wells, W. Norfolk, 
in 1922, I found almost immediately two female plants bearing 
staminate flowers, and then after prolonged search could find no 
more. Syme notes that Borrer and others were of opinion that 
the form was not constant. — J.E.L. 
