188 



MANUAL OF BOTANY 



The Carpel. — Each carpel consists, 1st, of a hollow inferior 

 part resting on the thalamus, called the ovary [fig. 398, o), 

 containing in its interior one or more little somewhat romidish 

 or oval bodies called ovules (ov) or megasporangia, which are 

 attached to a projection on the walls termed the placenta, p. 

 2nd, of a stigma, either placed directly on the ovary, in which 

 case it is said to be sessile, as in the Barberry (fig. 398, st) ; or 



Fig. 395. 



Fig. 397. 



t 



Fig. 398. 



Fig. 399. 



4^ 



Fiij. 396. Pistil of Primrose (Primula mhjarts), composed of several united 

 carpels, and hence termed compound and syncarpous. There is but one style, 



which is surmounted by a capitate stigma. Fig. 396. Simple pistil of 



Broom, o. Ovary, s. Style. (. Stigma. Fig. 397. Compound syncarpous 



pistil of Tobacco (Nicotiana Tabacum). t. Thalamus, o. Ovary, s. Style. 



(/. Capitate stigma. Fig. 898. Vertical section of the ovary of the Barberry 



(^lierberis wuZfiran'a), on the outside of which are seen a stamen dehiscing 

 by two valves, and a petal, o. Ovary, ov. Ovules attached to a projeotio)] 



called the placenta,/), st. Sessile stigma. Fig. 399. Vertical section 



of the flower of the Pffiony (Piconia). els. Dorsal suture of the ovary. 

 vs. Ventral suture. 



elevated on a stalk rising from the ovary, called the style, 

 as in the Broom {fig. 396, s). The terms ovary, style, and 

 stigma are applied in precisely the same sense when speaking 

 of a compound pistil in which the parts are completely united 

 {figs. 367, 395, 397), as in the case of a simple carpel. The 



