139 
concave in the newly-opened flowers. The panicle not always 
terminal; sometimes two opposite axillary branches bear the 
flowers. Berry imperfectly 2-celled: outer skin nearly black, 
with a staining juice, albumen cup-shaped, the convex part 
towards the outside of the berry: embryo dicotyledonous, 
curved, inclosed in the lower portion of the albumen, the 
radicle towards the edge of the cup-shaped albumen. 
41. Sanguisorba media ?—1825.—Calyz 4-leaved? Fila- 
ments linear, not dilated. Spike, in my specimen, not very 
distinctly oblong or cylindrical. Stigma more like S. media 
than officinalis: and the calyx not hairy. I have not ex- 
amined S. officinalis, having no specimen. 
42. Cornus swecica.—Ben Lawers, July 13, 1827.—Stem 
4-sided, angles slightly winged, from a decurrence of the 
leaves. Flower-stalk also square. Germen covered with 
close-pressed hairs, like the partial flower-stalk and stem. 
Calyx fringed; petals reflexed, outer one acuminate. Some- 
times a second wnbel appears above the first, arising from 
the centre; and sometimes 4 leaves surmount the solitary 
umbel. 
43. Parietaria officinalis—Wales, September 19, 1828.— 
Filaments at first incurved, the anther adhering to their 
lower part, and when mature, it separates by the elasticity 
of the filament, which then becomes straight, and the cells of 
the anther are burst. Jnvolucrum in two portions of about 
seven segments each, and between them is placed a fertile 
flower, whose calyx is entire, closely surrounding the pistil. 
In each portion of the involucre are 3 flowers, apparently 
Jertile, and containing the stamens; yet the style and stigma 
are not visible, although perfect seeds are found in calyces 
in similar situations. 
44. Potamogeton fluitans.— Anglesea, July, 1826.—It does, 
in some situations, much resemble P. ducens. The coria- 
ceous floating leaves are nearly as acute as the Jower ones, 
differing only in their firmer texture and in being stalked, 
their ribs, shape, and size being much the same in both. The 
lateral ribs are by no means separate at the base of the leaf, 
