572 
THE BOTANICAL EXCHANGE CLUB OF THE BRITISH ISLES. 
Rubus melatioxylon, Muell. and VVirtg. Near Nairn, vice-county 96, 
29th July 1898. — E. S. Marshall and VV. A. Shoolbred ; sent by 
Mr, Shoolbred. “Yes; a rather weakly-armed and shade-grown 
state.”— W. M. R. 
R. rhombifolius^ Weihe, fori 7 ia. Sutton Holms, Dorset, 28th 
August 1891. — E. F. Linton. “The same plants as Dr. Focke once 
thought to be R. stereaca?ithus, and then referred to R. rhojnbifolius^ 
as is also sent by the Rev. R. P, Murray.” — E. F. L. “I fear that 1 
have no helpful suggestion to make here. I have seen neither 
authentic specimens of R. stereacanthus (P. J. Muell.) nor the living 
bushes of this Dorset plant, which, however, seems to me very distinctly 
nearer to R. argetitatus than to R. rhombifolius. It hardly differs 
from plants which Dr. Focke has agreed with me in naming R. 
argefitatus, except in being less hairy in stem and panicle-rachis.” — 
W. M. R. 
R. stereacanthus, P. J. Miill. ? Woodlands, Dorset, loth July 
1893. — R. P. Murray. “I send this bramble under the name which 
was given to it (without any sign of doubt) by Dr. Focke, when I sent 
him specimens collected in 1891. He remarked on it : ‘Genevier puts 
it under R. ainplificaUis ; my own impression is that it will prove to be 
a variety of R. arge?itatus, P. J. Muell.’ I had myself placed it under 
R. rhombifolius,^ Weihe, and I still think that it ought to go there, 
though markedly different from the type in one or two points. The 
most marked peculiarity is to be found in the prickles of the panicle, 
which are very long and straight (Genevier describes them as falques' 
in R. stereacaftthus). The petals are very bright pink (in R. 
stereacanthus Planes ou dPn rose tres pale’). This form grows 
abundantly in hedgerows for three or four miles from Woodlands to 
Hinton Martell (Dorset), and I saw a form going off towards ordinary 
R. rhombifolius in small quantity in a wood at Lytchett Matravers, 
some six miles to the S.W. of Hinton ; but this plant had the same 
long, straight panicle prickles. However Dr. Focke, who saw it 
growing, called it rhombifolius. I think this form might have a 
varietal name.” — R. P. M. 
R. argefitatus, P. J. Muell, var. clivicola, A. Ley (‘Journ. Bot.,’ 
1896, 158). Cusop, Herefordshire, and neighbourhood of Hay, 
Breconshire, July 1898. — W. Moyle Rogers. “A common plant in 
the Upper Wye Valley, constant in character and easily recognised 
when fairly mature, though when growing sometimes recalling R. leuco- 
stachys, or even the less strongly-armed forms of R. rusticanus. The 
small, roundish-obovate terminal leaflet, with waved edges and ashy 
felt and prominent ribs beneath, is especially characteristic. The 
petals appeared to me uniformly pink in the freshly-opened flowers, 
though soon fading in the bright sunshine.” — W. M. R. 
R. submermis, Rogers. St. Leonard’s Forest, W. Sussex, 22nd 
July 1898. — J. W. White. “Yes.” — W. M. R. 
