ORGANS OF EEPRODUOTION. 



273 



tissue is usually elongated into papillre {fig. 582, 2), hair-like 

 {fig. 584), or feathery processes {fig. 586), or iu some cases 



Fig. 585. Fig. 586. Fig. 587. 



Fig. .585. Ventral view of a pistil of Isopyrum bito-natum, showing the douhle 



stigma Fig. 5S6. Pistil of Wheat surrounded by three stamens, and 



two squamulae, s p. Two feathery styles arise from the top of the ovary. 



. Fig. 587. Pistil of Dianthiia CaryophijUus on a stalk g, called tlie 



gynophore, below which is the peduncle. On the top of the ovary are two 

 styles, the face of which is traversed by a continuous stigmatic surface. 



it is smoother and more compact. It is never covered by 

 true epidermis. By means of the corresponding conducting 

 tissue of the style it is in direct continuity with the placenta. 

 (See Stigma, page 291.) At the period of fecundation as before 

 noticed, it becomes moistened by a A-iscid fluid which renders 

 the surface more or less sticky, and thus admirably adapted 

 to retain the pollen -grains, which are thrown upon it in various 

 ways at the time of the dehiscence of the anther. 



The GYNCECiuAr. — Having now 

 described the parts, nature, and 

 structure of the simple carpel, 

 we are in a position to examine 

 in a comprehensive manner the 

 gynoecium or pistilline whorl ge- 

 nerally, which is made up of one 

 or more of such carpels. 



"When the gynoecium is formed 

 of but one carpel, as in the 

 Broom {fig. 568), Fea {fig. 588), Fig. .588. Pistil of Lathwus. o. Ova- 

 &C., the pistil is called ..-,«;./. ^ o^Kva^T ^Ihe styt ^d 

 and the two terms pistil and stigma, stiV/. 



Fig. 588. 



I 



stlo 



