. High school botanical note book [microform]. Botany; Botanique. iH noTAMCAL TEliMS. Xoto that the essential parts of tlio jiistil arc tho ovary or seed-bearinj,'part, and tl:o stigma receives the pollen. The stylo is often wanting, and then the stignu. is An pistil is found in '/i/nntospmncus plants like tl,o I'iue. Here the ovules are not enclosed, but are attached to the inner fa.'o of an oixjn leaf or scale, the scales forming a cone (Figs, Km. lOH, 1(19). Cohesion. Apoc.\ui'EKi()U: wiien entirely free from the calyx (Fig. 1 as in Buttercup, .Sheijlierd's Purse, etc. I
. High school botanical note book [microform]. Botany; Botanique. iH noTAMCAL TEliMS. Xoto that the essential parts of tlio jiistil arc tho ovary or seed-bearinj,'part, and tl:o stigma receives the pollen. The stylo is often wanting, and then the stignu. is An pistil is found in '/i/nntospmncus plants like tl,o I'iue. Here the ovules are not enclosed, but are attached to the inner fa.'o of an oixjn leaf or scale, the scales forming a cone (Figs, Km. lOH, 1(19). Cohesion. Apoc.\ui'EKi()U: wiien entirely free from the calyx (Fig. 1 as in Buttercup, .Sheijlierd's Purse, etc. Inpekiou: when surrounded by the calyx-tube whicji fast to it (Fig. i;,/), as in Ai,ple and Fuchsia. ill any in ail}- at tho grows Definition. THE OVULE. Ovules are tiie bodies which, after fertilization by the pollen, develope into seeds. Placentation. By this term is luoant tho arrangement of the placentas, or projections ia tlie interior of tho ovary upon which tho ovules grow. Placentation is (a) Marijinal, in a simple pistil like that of Pea, the placenta being on one seam or mtuve (Fig, I'jK). (b) Aj:ilti or Central, M-hen the jtistil is compound, and the dissepiments meet in the centre of the ovary (Fig. KIO,) (c) Parietal, when the comi)ound ovary is one-celled and the ovules are borne on the walls (F^g. 101). (d) Free Central, when the ovary is one-celled, and the ovules are borne on a column which rises from the bottom of the cell (Figs. 170, 171). Parts of the Ovule. Funiculus : the stalk by which the ovide is attached to the placenta (Fig. 173,/). If this stalk is absent the ovule is sessile. \e: the outer coat of the ovule (Fig. 172, ai). Se(;: the inner coat (Fig. 172. //). MicnopYLK : the minute opening through the two coats (Fiir 172, m). ^ Fit,'. ii;7. 0 Ki^rs. lilH, ifiy. FiKS. 170, M. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of t
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbotany, bookyear1895
