. Plants and their ways in South Africa. Botany; Botany. Floivers and their Parts 137 As the ovaries are variously formed, the ovules are placed Fig. 126.—I. Stamen of Finns sylvesfris, L., with longitudinal dehiscence (magnified). II. Stamen of barberry, the anther opening by recurved valves (magnified). III. Stamen of Rhododendron, each anther lobe opening by a pore. IV. .Stamen of bay, Laurns nobilis, L., with two glands at the base of the fila- ment, the anther opening by recurved valves. V. Stamen of Erita, the anther opening by pores and bearing two appendages at its base (magnified). (F
. Plants and their ways in South Africa. Botany; Botany. Floivers and their Parts 137 As the ovaries are variously formed, the ovules are placed Fig. 126.—I. Stamen of Finns sylvesfris, L., with longitudinal dehiscence (magnified). II. Stamen of barberry, the anther opening by recurved valves (magnified). III. Stamen of Rhododendron, each anther lobe opening by a pore. IV. .Stamen of bay, Laurns nobilis, L., with two glands at the base of the fila- ment, the anther opening by recurved valves. V. Stamen of Erita, the anther opening by pores and bearing two appendages at its base (magnified). (From Thom^ and Bennett's "Structural and Physiological Botany".) in different positions. In the bean they are placed on the upper edge of the ovary ; in Orchids, Violets, and Drosera the ovary is made up of three or five carpels which just meet at the edges. The joinings make three thick ridges the length of the ovary. The part upon which the seeds are placed is called a placenta. In Ornithogalum and Gladiolus the three carpels curve in until they meet at the centre or axis of the ovary. In Carnations, " Poor Man's Weather - glass" {Anagaliis), and Portulacaria (Spekboom), the ovules are borne on a column, the end of the flower-stalk or receptacle; they are free from the wall of the ovary. These three kinds of arrangement or placentation are marginal, which includes the parietal and axile, and " free. Fig. 127.—One-celled swing- ing anthers of Resiio, (From Edmonds and Mar- loth's " Elementary Bo- tany for South Africa ".). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Stoneman, Bertha. London, New York, Longmans, Green
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