2 i 8 the botanical exchange club of the BRITISH ISLES. 
J^. lacustris, Rogers. Threlkeld, Keswick, Cumberland, 
28th July 1906. See ‘ Journ. Bot.,’ Jan. 1907. — W. M. Rogers. 
R. rhojubifolius, Weihe., var. megastachys, W.-Dod. Ref. No. 
1454. Walton Common, Surrey, 24th July 1906. Recognized 
primarily by its much larger, broader panicle, with larger flowers, 
i.e. longer petals. For fuller description see ‘Journ. of Bot.,’ Feb. 
1906, p. 64. — A. H. Wolley-Dod. 
R. rusiicanus, Merc, x pyramidalis, Kalt. Ivory Hill, West 
Glouc., on sandstone, 4th Aug. 1905. Absolutely sterile. Con- 
sidered by Mr. Rogers to be either this hybrid or rusticanus x leuco- 
stachys, but more probably the former. R. pyramidalis grows close 
by. Abundant over about an acre of ground. Ivory Hill is one of 
the few morsels of the Saxon Royal Forest of Kingswood that 
remain in a primitive state. There has therefore been plenty of 
time for a strong hybrid like this to spread over a large area by 
rooting at the tip only. — Jas. W. White. 
R. macrophyllus, var. macrophylloidcs, (Gdnev.) From a hedge 
close to a colliery, outside Werfa Wood, Aberdare, Glamorgan, 2nd 
Aug. 1906. Named by Mr. Rogers in 1905. I took the best 
specimens I could find, but the coal-dust is thick even on them. — 
H. J. Riddelsdell. 
R. hirtifolius, Muell. and Wirtg. f. Shirley, Derbs., ist Sept. 
1906. — W. R. Linton. Apparently best under R. hirtifolius, 
though in stem pieces going off rather towartls R. Sel/neri, and in 
panicle perhaps towards R. villicaulis ! Our hirtifolius is still con- 
siderably aggregate, and this form seems to claim further study a 
little earlier in the season. The nearly bald stem (on Sept, ist) 
need occasion no difficulty. — W. M. R. 
R. leucostachys, Schleich., forma aculeata. Penyard, Hereford- 
shire, 30th .August 1906. This well-marked, very prickly form is 
abundant on the wooded hills rising to the south of Ross, Hereford- 
shire. It is clearly, from its abundance and its free fruit-bearing, 
not a hybrid. — Augustin Ley. 
R. lasiodados, var. lo?igus, Rogers and Ley; see ‘J. B.’ 1906, 
p. 58. Gathered in company with Mr. Ley on nth July 1906, on 
a railway bank at Ystalyfera, Glamorgan. This is in the Upper 
Tawe Valley, and an extension of range ; it is close to the Brecon- 
shire border. — H. J. Riddelsdell. By a slip mislabelled R, longus. 
— W. R. L. 
R. Gelertii, Frider, var. criniger, Linton. Repton Rocks, 
Derbyshire, v.-c. 57. — T. E. Routh and W. Bell. “Exactly R. 
criniger, Linton, as I know it.” — W. M. Rogers. 
