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. — Calyx 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 suecica. — Ben Lawers, July 13, 1827. — Stem 

 4-sided, angles slightly wdnged, 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 umbel 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. Involucrum 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 jof the involucre are 3 flowers, apparently 



fertile, and containing the stamens ; yet the style and stigma 

 are not visible, although perfect seeds are found in calyces 

 in similar situations. 



44. 'Potamogeton Jluitans. — Anglesea, July, 1826. — It does, 

 in some situations, much resemble P. lucens. The coria- 

 ceous floating leaves are nearly as acute as the lower ones, 

 diflering 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, 



