BOTANICAL SOCIETY OF LONDON. 
59 
This last species, confounded by all authors with Epilobium 
rosmarinifolium , Haenke, (not Pursch,) until the publication 
of the Flora of Reichenbach, is in fact very dilferent, as a 
long series of observations has proved, so that the above- 
named publication has become comparatively useless by the 
publication of the Flora Excursoria. 
However this may be, I take the liberty of stating that 
Reichenbach has not shown the essential differences between 
these two species of plants. 
The one, in fact the Epilobium angustissimum, so beautifully 
figured in Curtis’s Bot. Mag., PI. *J6, has its ascendant stem 
diffuse, branched, reddish, as well as its branches ; its leaves 
linear-lanceolate, obtuse, very smooth, marked with glandular 
serratures ; the flowers loose, solitary upon their footstalks, 
and flesh-coloured ; stigma quadrified and bent ; the pod 
twice as long as the footstalk. It flowers long before the 
following, and grows spontaneously in Batavia, Ireland, and 
Scotland. 
The other, the Epilobium rosmarinifolium , Haenke, is a 
plant from Bohemia and the Tyrol, and has, on the contrary, 
an erect stem, diffuse, very much branched ; branches 
spread ; leaves lanceolate and acuminate, nearly entire, very 
slightly pubescent ; a long ear, flowers more compact and of 
a puce colour ; the stigma is of the same length as the foot- 
stalk, but the pod is four times that length. 
In comparing the characters of the Epilobium angustissi- 
mum and rosmarinifolium with those of the Epilobium now 
described, the result is that the latter ought accordingly to 
be placed as intermediate between the other two, or, at least, 
as allied to both species. I propose to name it canescens, 
which will give a suitable idea of its habit. In recapitulating 
the characteristic traits of the three above-mentioned species, 
I think their mutual affinities and their diagnostic characters 
will be fully determined as follows : — 
1. Epilobium canescens, nob. Foliis lanceolatis, acumi- 
natis, integerrimis ; ramisque sericeo canescentibus ; siliqua 
pedunculi longitudine. 
2. Epilobium angustissimum , Curtis. Foliis lanceolato- 
linearibus, obtusis, glanduloso serratis; ramisque glaberrimis, 
siliqua pedunculo duplo longiori. 
3. Epilobium rosmarinifolium, Haenke. Foliis lanceolatis, 
acuminatis, subintegerrimis, ramisque puberulis ; siliqua pe- 
dunculo quadruplo longiori. 
I will now beg leave to remark with respect to the Epi- 
