REPORT FOR 1910. 
563 
Epilobium montanuni x tetragonum $ . Artificial cross 
produced by R, H. Compton, B.A. Grown in a garden at Tewkes- 
bury, 1909 1910. — C. E. Moss. E. montanum^ E. tetragonum, 
Curt. (^E. adnatum, Grisebach). Both parents quite typical, agreeing 
well with Haussknecht’s descriptions : self-sown in a garden at 
Tewkesbury, m which also the hybrid was cultivated in 1909 — 
1910. The artificial hybrid corresponds on the whole with Hauss- 
knecht’s description of the naturally occurring plants. The follow- 
ing points may be noted : — 
(1) The upper part of the stem is practically terete, only the 
lower part exhibiting decurrent lines. 
(2) A transverse commissure between the bases of opposite 
leaves is a character derived from E. montanum. 
(3) The stigmas are very shortly four-Iobed, this being inter- 
mediate between the condition in the two parents (con- 
trast E. hirsutum x tetragonum)^ 
(4) The capsules appear well-formed, but all the seeds seem 
to be imperfect and without embryos. — R. H. Compton. 
These hybrid plants, the results of careful experiments by Mr. 
Compton, will be very welcome to students of our willow herbs. — 
C. E. Moss. 
Epilobium hirsuhwi, L., var. subglabrum, Koch. Streamside, 
Failand, North Somerset, August 10, 1910. A rather striking form 
in its extreme state — dark bright green in foliage on account of 
its being glabrescent (plante d’un beau, vert, Rouy). E. hirsutum 
is noteworthy for having a pilosity of two distinct kinds without 
intermediates, viz., long white hairs more or less sparsely set amid 
an extremely short glandular pubescence. In the variety the hairi- 
ness of the stem and leaves is remarkably feeble when compared 
with that of the ordinary plant ; the long white hairs being absent 
from the calyces, fruit and uppermost leaves. It is stated in the 
French and German books that subglabrum occurs ‘ here and there ’ 
through the more northern and mountainous regions of Western 
Europe ; and doubtless it is well distributed at home, but in this 
country little notice has been taken of it either in descriptive 
manuals or in local botany. Among those to which I have been 
able to refer, the Floras of Berks and Middlesex alone mention 
the variety as being ‘not uncommon.’ It does not appear that 
soils can influence these plants. At Failand the shaggiest and the 
most glabrescent grow side by side on the same stream, with many 
connecting intermediates. — James W. White. This does not agree 
with Koch’s description ; the leaves are not glabrous above, nor 
hairy only on the nerves beneath, and there are a good many long 
stem-hairs. This species varies indefinitely in its clothing. Nearest 
the forma a. virescens of Haussknecht’s monograph. — Edward S. 
Marshall. 
