CAMPANULA CORONATA. 13 ' 



microscope, as transparent, smooth, blunt tubes, curved upwards towards £ .point. 

 Between tnese are others, much shorter and smaller, forming a sort of -derwood- 

 if we may be allowed the expression-not discernible but with a somewhat poweul 

 lens As the style elongates, this double set of hairs brushes out the pollen from 

 L anther cells, which open inwardly, and carries it upwards, where it is retained 

 until the stigmas are fit for its reception. At this stage, the branches of the stigma 

 on the inner side of which the absorbing surface is situated, are erect ; but about 

 hep rod of expansion the lobes will be seen to curl back, by which change in 

 thir position th! stigmatic surface is brought into contact with the pollen on th 

 style Nor are these the only provisions for the fertilization of the flower. We 

 have observed that the longest hairs of the collecting brush are smooth; in order 

 therefore, to enable the pollen to attach itself with greater tenacity, the grains are 

 covered with small projections. Under the microscope, the grains may be seen 

 clinging to each other and to the hairs, in a curious manner. After fecundation 

 the stigmas gradually return, more or less completely, to their previous position, and 



the longest series of hairs disappear. 



We must now revert for a moment to the stamens, to point out the dilation of 

 the five filaments at the base, and the dome-like covering formed by the union 

 of the five valves over the top of the seed-vessel and the base of the style The 

 inferior ovary is usually three-celled, each cavity containing numerous small seeds 

 attached to L axis, by what is termed a central placenta The capsule or mature 

 ovary, opens in a somewhat unusual manner, vi Z . by small apertures at the s des 

 one to each cell. The mode in which this opening is formed, is not the least 

 interesting feature in the economy of the Campanulas In C. CarpaUca, which ^ 

 to be found in most gardens, the membranous partition forming the cell, is cros ed 

 obliquely by a stiff cartilaginous fibre or process, which arises from the top of he 

 cell As the capsule ripens, this fibre curves upwards, and its point perforates the 

 walls of the ovary and the adherent calyx. When the seed-vessel "mature flu- 

 hook-like body may be plainly seen at the upper part of the aperture by which he 

 seeds escape. The position of this opening varies in different species; m the 

 Ramnion (C. Ranunculus) it is near the base of the cell. _ 



Such is a brief outline of the structure of the floral organs of the Campanulas. 

 It only remains to be added, that the very ornamental species, coronata, figured m 

 the accompanying plate, is a recent importation from Belgium. A !*>"«£ f 

 the same name was, we believe, figured some years since m the Botamcal Better 

 which of the two is the original coronata, we are, at this moment, unable 



° TheFesent plant is a hardy perennial, growing about three feet high, and having 

 foliage closely resembling that of the peach-leaved Campanula, C. persmfoha. The 

 white calyx, with its green tips, has a very pretty effect, and we strongly recommend 



