Botanical Notes. 137 
The varieties appear to be caused by its place of growth. The fruit 
is always, as far as my observations go, sessile when the plant in- 
habits deep water, such as that of the Welsh lakes and rivers, and 
the leaves become slightly spathulate if its top reaches the surface. 
The varieties with stalked fruit grow in shallow water (a,) or on 
wet mud not often flooded (6.) Var. a is a peculiarly slender and 
delicate plant, and very small in all its parts ; in b the internodes 
are much shortened, the leaves small, ovate, or shortly spathulate, 
and the stem rooting at many of the joints. The linear leaves are 
usually emarginate, and those which reach the surface of the water 
have generally three nerves. 
Var. /3. is the most common form. I have noticed it in St Leonard's 
Forest, Sussex, in lakes and rivers near Snowdon and in Anglesea ; 
a. occurs at Caernarvon, and near the Mona Inn, Anglesea; b. I 
have only seen near Bethws Garmon, Caernarvonshire. 
Hieracium, n. s. ? Scyons very short and densely leafy. Leaves 
sessile, oblong-lanceolate, acute or rounded, entire, beset with nume- 
rous long silky hairs on both surfaces, each hair thicker towards its 
base, and springing from a small dark-coloured bulb, which is more 
apparent on the upper surface, on account of the absence of the dense 
white wool with which the under surface is quite covered. Scape 
1- flowered, leafless, covered with numerous long white silky hairs 
with a black base, and intermixed with them a good many small black 
short ones, each bearing a gland at its top. Flower large, pale-yel- 
low ; involucrum very like that of H. alpinum, its bracteae in two 
rows, with a few lax smaller ones at the base, each bractea broadly 
linear, lanceolate, acute, covered with dense white wool, and bearing 
very numerous long silky hairs with a black base, these latter not 
extending to the margins. 
This plant differs very much in habit from H. pilosella, and may 
be distinguished, at first sight, by its very short and leafy scyons, 
much longer leaves, larger flowers, and copious silky pubescence. 
In the three latter characters it almost exactly resembles H. al- 
pinum. It also closely approaches H. pilosellaeforme, Fl. Helv. v. 
72, but differs in the shape and peculiar pubescence of its involucral 
bracteae. 
The only British station for this plant, with which I am acquaint- 
ed, is Craig Breidden, Montgomeryshire, where it grows upon the 
crags of a lofty precipice. This station is referred by Dr Hooker, 
from an inspection of my specimens, to H. alpinum in his Brit. Fl. 
ed. 3, p. 348. 
Taraxacum dens-leoms, Desf. As it is probable that all the Eu- 
