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Contributions from the Botanical Laboratory of the University of Pennsylvania (Volume 5)

Contributions from the Botanical Laboratory of the University of Pennsylvania (Volume 5)


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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1919. Excerpt: ... edly show a perfectly exact relation. This is upheld by the fact that where a surface without glands (in 5. flava) is crossed with a surface where the gland number is uniform (glandular of S. purpurea) the hybrid shows an exactly intermediate number. In the case too where they are massed in the same regions in parents and hybrids, as in 5. Sledgei, S. Drummondii, and S. areola ta, the hybrid shows a blended relation. The comparison of these three hybrid plants with their parents in all details of structure gives an overwhelming mass of evidence for exact blending, which extends to the most minute details. It surely points to some exact relation in molecular structure of the hybrid plant, extending even to the amount of thickening laid down in a cell wall, the size of the starch grains, or the size of a chloroplast. The writer wishes to acknowledge the kindness and cooperation of Dr. J. M. Macfarlane in the preparation of this paper. Thanks also are due to Mr. W. R. Taylor, who made many of the microphotographs; and, through the kindness of Mr. Frank M. Jones, the writer was able to examine fresh flowers, which he sent from Alabama, Mississippi, and Florida. BIBLIOGRAPHY 1. Tournefort, J. T. 2. Linnaeus, C. 3. Clusius, C. 4. Parkinson, John. 5. Josselyn, 6. Plukenet, L. 7. Plukenet, L. 8. Ray, John. 9. Walter, Thos. 10. Bartram, Wm. 11. Michaux, Andre 12. Croom, H. B. 13. Anonymous. 14. Chapman, A. W. 15. Hooker, W. J. 16. Boulger, Prof. 17. Macfarlane, J. M. 18. Masters, M. T. 19. de Candolle, A. Institutione Rei Herbariae, 3rd Ed. (1719). Species Plantarum, 1st Ed. (1753). Rariorum Plantarum Historia (1601). Theatrum Botanicum (1640). New England Rarities Discovered (1672). Phytographia, Part III, Tab. 152 (1692). Amaltheum, Tab. 376 (1705). Historia Pla...


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Product Details
  • ISBN-13: 9781235750069
  • Publisher: General Books
  • Publisher Imprint: General Books
  • Height: 246 mm
  • No of Pages: 64
  • Spine Width: 3 mm
  • Width: 189 mm
  • ISBN-10: 123575006X
  • Publisher Date: 01 Feb 2012
  • Binding: Paperback
  • Language: English
  • Returnable: N
  • Weight: 132 gr


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