. A manual of botany. Botany. 64 MANUAL OP BOTANY apex, so that the oogonium is covered in by a kind of neck or crown consisting of small cells. There are usually five of these. Wlien the oogonium is mature these cells separate from each Fig. 812. ). <\*t I r- ;l Fig. 813. Fig. 814. Fig. Fig. 811. A, Portion of tbe axis of Charafragilu. s. Nucule or oogonium. n. Globule or antheridium. b. Internode. c. Crown or corona of nucule. j3. Abortive leaves. j3', j3", )3". Sterile leaflets, b. sk. Nucule, and a, glo- bule, botli in an eai'ly stage of development, w. Nodal cell of lea
. A manual of botany. Botany. 64 MANUAL OP BOTANY apex, so that the oogonium is covered in by a kind of neck or crown consisting of small cells. There are usually five of these. Wlien the oogonium is mature these cells separate from each Fig. 812. ). <\*t I r- ;l Fig. 813. Fig. 814. Fig. Fig. 811. A, Portion of tbe axis of Charafragilu. s. Nucule or oogonium. n. Globule or antheridium. b. Internode. c. Crown or corona of nucule. j3. Abortive leaves. j3', j3", )3". Sterile leaflets, b. sk. Nucule, and a, glo- bule, botli in an eai'ly stage of development, w. Nodal cell of leaf, u. Union cell between it and basal node of globule. 2. Cavity of internode of leaf. 6r. Cells of leaf covered^with cortex. After Sachs. Fig. 812. A portion of a filament, fil, of fig. 813, in the cells of which the antherozoids are developed ; with a 2-ciliated anlUiTozoid by its side. Fig. 813. A globule cut in half to show the oblong cells or manubria, c, and the septate filaments, fii. After Henfrey. Fig. 814. Nucule or archegonium of Chara. a. Apices of the spirally wound cells. Fig. 815. Vertical section of a nucule. other, leaving a small channel through which the antherozoid can make its way. The oosphere is sohtary in the oogonimn, though as it becomes ready for fertiUsation it cuts otl one or two small cells. 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 Green, J. Reynolds (Joseph Reynolds), 1848-1914. London, J. & A. Churchill
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbotany, bookyear1895
