. Agraria Botanica, teorico e pratico. La botanica, economico; Botanica. La ginecologia^CIUM 85 più frequentemente gli stamini dell'andrcecium sono distinti e completamente libera da ogni altro come in il ranuncolo, ma in alcuni fiori i filamenti del stami sono uniti insieme e solo le antere sono libere. Quando tutti i filamenti sono uniti gli stami sono descritti come monadelphous se due o più fasci di filamenti uniti sono presenti gli stami sono detti essere diadelphous e polyadelphous rispettivamente. In daisy, Tarassaco, e la maggior parte delle piante appartenenti alla CompositEe, un
2448 x 1021 px | 41,5 x 17,3 cm | 16,3 x 6,8 inches | 150dpi
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. Agricultural botany, theoretical and practical. Botany, Economic; Botany. THE GYN^CIUM 85 Most frequently the stamens of the andrcecium are distinct and completely free from each other as in the buttercup, but in some flowers the filaments of the stamens are united together and only the anthers are free. When all the filaments are united the stamens are described as monadelphous if two or several separate bundles of united filaments are present the stamens are said to be diadelphous and polyadelphous respectively. In the daisy, dandelion, and most plants belonging to the CompositEe, the anthers are united and the filaments are free; such stamens are termed syngenesious. Stamens attached to the petals, as in the potato flower, are described as epipetalous. (ii) The gynsecium is composed of carpels, each of which generally consists of three parts : (i) a swollen hollow basal por- tion termed the ovary, ^ x (2) a thin more or less elongated part called the style, at the apex of which is (3) the stigma. The style is in many instances missing and ^(£1 the stigma is then SeS- Fig. 37.—Pod of a pea (a single carpel}, v The ventral ., - suture ; d the dorsal suture : s style ; t stigmatic surface ; sue upon the upper part yfunicle of the seed ; a seed. of the ovary. Within the cavity of the ovary are small round or oval bodies termed ovules, which under certain circumstances to be mentioned later develop into seeds. The part inside the ovary, on which the ovules are borne is termed the placenta. The carpel may be considered as a leaf which has been folded along the midrib and united at its edges. The line correspond- ing to the united edges of the leaf is termed the ventral suture of the carpel, and it is along this line that the ovules are generally attached in two rows—one row belonging to each edge; the line corresponding to the midrib of the folded leaf is the dorsal suture.. Please note that these images are extracted from scanned page images that may have b
