Text-book of botany, morphological and physiological . is a hyahne ball (envelope-cell) in which,. Fig. 153.—Stephanosphc^rapht-jialis (after Cohn and Wichura). standing vertically to its horizontal diameter, lie eight (or more) chlorophyll-greenprimordial cells; these are fusiform (Fig. 155, XI), and attached to an equator of theenvelope-cell at both their ends by branched threads of protoplasm. These primordialcells, derived from one mother-cell, form a family which rotates on the axis at rightangles to the plane passing through them all. Out of each cell of a family of thiskind is produced,
Text-book of botany, morphological and physiological . is a hyahne ball (envelope-cell) in which,. Fig. 153.—Stephanosphc^rapht-jialis (after Cohn and Wichura). standing vertically to its horizontal diameter, lie eight (or more) chlorophyll-greenprimordial cells; these are fusiform (Fig. 155, XI), and attached to an equator of theenvelope-cell at both their ends by branched threads of protoplasm. These primordialcells, derived from one mother-cell, form a family which rotates on the axis at rightangles to the plane passing through them all. Out of each cell of a family of thiskind is produced, so long as the conditions of vegetation (light, warmth, and water) arefavourable, a new family which begins to be formed in the evening and is maturedduring the night. Each cell divides in succession into two, four, or eight cells, lyingin the same plane and forming a disc divided into eight parts; they secrete a commonenvelope and develope their cilia. The cells separate from one another and theircommon envelope detaching itself become spherical; and thus eventually eight youngfamilies are
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, bookyear1875
