Identifier: embryologydevelo00lewi (
find matches)Title:
The embryology and development of Riccia lutescens and Riccia crystallina ..Year:
1906 (
1900s)Authors:
Lewis, Charles Edward, of IndianaSubjects:
RicciaPublisher:
Ithaca, N.YContributing Library:
Smithsonian LibrariesDigitizing Sponsor:
Biodiversity Heritage LibraryView Book Page:
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view book online to see this illustration in context in a browseable online version of this book.Text Appearing Before Image:BOTANICAL GAZETTE, XLI PLATE IXText Appearing After Image:LEWIS on RICCIA i9o6) LEWIS—DELOPMENT OF RICCIA 137 PLATE VII. Fig. 34. Spore mother-cell in resting state. Chromatin on a fine linin net-work. Fig. 35. The chromatin is in the form of an irregular thread. Fig. 36. Chromosomes formed; weft of delicate fibres about the nucleus. Fig. 37. Nucleus elongated and showing a weft of fibres. Fig. 38. Spindle with chromosomes in plate. No centrosome. Fig. 39. Chromosomes moving to poles of spindle. Fig. 40. Chromosomes at the poles, thickening of spindle fibres to form cellplate. Fig. 41. Daughter nuclei. Fig. 42. Cell plate. Daughter nuclei contain numerous spherical bodies ofchromatin which stain bright red with safranin. Fig. 43. Daughter nuclei preparing for division. Fig. 44. Daughter nucleus with chromosomes in plate. Neither centrosphere nor centrosome. PLATE VIII. Fig. 45. Chromosomes moving to poles. Fig. 46. Daughter nuclei with chromosomes at the poles to form nuclei ofspores. The cell plate formed in the first division persists. FNote About Images 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 work.