. Contributions from the Hull Botanical Laboratory. Plants. 1908] BARNES &* LAND—CUPULE OF MARCHANTIA 403 notions of its homology with an air chamber, as we now proceed to show. Abundant fresh material was at hand from thrifty plants of Marchantia polymorpha, grown under glass by Mr. John Cook, the skilful gardener of the department, who has taken much pains with the cultivation of Hepaticae. Being transferred directly from the. Fig. 3.—Gemmiparous area (/>) out- grown by adjacent tissues. Fig. 4.—Stage nearly as in -fig. 3; w, a rim cell cutting off the primordium of a lobe of the cupu
. Contributions from the Hull Botanical Laboratory. Plants. 1908] BARNES &* LAND—CUPULE OF MARCHANTIA 403 notions of its homology with an air chamber, as we now proceed to show. Abundant fresh material was at hand from thrifty plants of Marchantia polymorpha, grown under glass by Mr. John Cook, the skilful gardener of the department, who has taken much pains with the cultivation of Hepaticae. Being transferred directly from the. Fig. 3.—Gemmiparous area (/>) out- grown by adjacent tissues. Fig. 4.—Stage nearly as in -fig. 3; w, a rim cell cutting off the primordium of a lobe of the cupule. cultures to the fixing fluids, the material was in exceptionally good condition. Our figures show usually only the cell walls, the perfectly preserved contents being omitted for the sake of clearness. Mitotic figures were common, showing that the cells were in active growth. The figures are of longitudinal sections, except fig. 13, are all drawn to the same scale, and having been reduced one-half are now magnified about 625 diameters. Longitudinal sections through the apex of gemmiferous plants show, as near to the apical cell as the third segment, a differentiation in the cells which are to form the gemmiparous area. Instead of. 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 Hull Botanical Laboratory. [Chicago : University of Chicago Press
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectplants, bookyear1895
