562 THE BOTANICAL EXCHANGE CLUB OF THE BRITISH ISLES. 
I. M. Hayward. R. Uva-ursi^ L., var. Grossularia (L.) with bristly 
fruits; R. Uva-ursi has the ripe fruits glabrous. — G. Claridge 
Druce. 
Seduni alburn^ L. Railway bank, Thornillee, Peebles, July 2, 
1910. — I. M. Hayward. Yes. It is also quite naturalised on 
rocky cliffs by the Gala, below Galashiels. — G. Claridge Druce. 
Sedum lydimn Boiss. Near Clovenfords, Galashiels, June 1910. 
An Oriental species introduced a few years ago into English gardens. 
Probably this Clovenfords Sedum has been carried by the river from 
a garden above. Now it is quite naturalised, and is growing abun- 
dantly for 200 yards along a wall by the banks of the River 
Caddon, a tributary of the Tweed. The richness of the green 
to red colouring of its leaves and stalks forms quite an ornament 
to that side of the old wall. (See ‘ Rep.' p. 502.) — I. M. Hayward. 
Epilobiu 7 H hirsututn 2 X tetragonum Artificial cross pro- 
duced by R. H. Compton, B.A. Grown in a Cambridge garden, 
1909-10. — C. £. Moss. E. hirsutum, Z., quite typical: E. tetra- 
gonum, Curt., the E. adnatutn, forma stenophylla of Haussknecht. 
(Both parents identified with certainty by Rev. E. S. Marshall.) 
The hybrids were all perfectly uniform. Haussknecht identified 
as adnatum x hirsutwn, a plant found once only, at Greussen in 
Thuringia ; the present artificial hybrid differs from Haussknecht’s 
description in the following points : — 
(1) The stem is quite terete towards the top. 
(2) The capsule never grows to more than 3-4 cm. long. 
(3) The leaves, though they half-clasp the stem below, do 
not do so in the upper branches. 
(4) The upper leaves are but little more hairy than the lower, 
and cannot be described as “ allmahlich beiderseits auged- 
riickt grau behaart.” 
(5) There are no long erect hairs such as are found in 
E. hirsutum, the hairs are longer than in E. adnatum, 
and are obliquely directed upwards, i.e., their position 
is intermediate between the closely appressed down of 
E. adnatian and the erect hairs of E. hirsutum. 
(6) The stigma is clavate, slightly notched at the tip, but 
larger than in E. adnatum, being 3 mm. long. 
It appears difficult to attribute these differences to the fact that 
the forma stenophylla was used instead of the type adnatum ; and 
further experiments are necessary before the identity of Hauss- 
knecht’s plant can be accurately decided. No seeds were produced 
naturally in 1909 nor 1910; and attempts to fertilise with pollen 
from E. hirsutuiH and E. adnatum f. stenophylla were fruitless. — 
R. H. Compton. 
