Anatomy of the Dicotyledons.
About: This article is published in American Midland Naturalist.The article was published on 1950-11-01. It has received 2511 citations till now.
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TL;DR: A discussion of the West- and Central European species of the natural genus Autunia Krasser and the form-genus Rhachiphyllum Kerp is presented, and a number of callipterid species previously introduced in the palaeobotanical literature appear to be synonymous with the here accepted and described taxa.
124 citations
TL;DR: High-molecular-weight fluorochromes were intracellularly injected into a sieve element of the fascicular stem phloem of Vicia faba L., using a modified membrane-potential-recording pressure probe, and longitudinal fluorochrome movement across the sieve plates and lateral displacement to the companion cells was detected with all the probes except the 40-kDa conjugate.
Abstract: High-molecular-weight fluorochromes were intracellularly injected into a sieve element of the fascicular stem phloem ofVicia faba L., using a modified membrane-potential-recording pressure probe. After stabilization of the membrane potential following microelectrode impalement, either LYCH (Lucifer Yellow CH), 4.4-kDa FITC-dextran (fluoresceinisothiocyanate-dextran) conjugate, or 3-kDa, 10-kDa or 40-kDa LYCH-dextran conjugate was microinjected into the sieve element. Longitudinal fluorochrome movement across the sieve plates and lateral displacement to the companion cells was detected with all the probes except the 40-kDa conjugate. This indicates that the molecular exclusion limit of the pore/plasmodesma units between a sieve element and a companion cell in the fascicular stem phloem ofVicia faba lies between 10 kDa and 40 kDa.
123 citations
Cites background from "Anatomy of the Dicotyledons."
...However, this variation in SE length concurs with average values for dicotyledonous species varying from 100 gm to 700 gm (Metcalfe and Chalk 1988)....
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TL;DR: Tests for resins, essential oils and tannins gave different responses in different parts of the plant, and Histochemical tests showed that all these structures contain alkaloids and lipids but not pectic-like substances and proteins.
123 citations
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21 Nov 2005TL;DR: An overview of plant structure and development and the origin of secondary tissue systems and the effect of their formation on the primary body in seed plants is presented.
Abstract: Preface Acknowledgements 1. Problems of adaptation to a terrestrial environment 2. An overview of plant structure and development 3. The protoplast of the eukaryotic cell 4. Structure and development of the cell wall 5. Meristems of the shoot and their role in plant growth and development 6. Morphology and development of the primary vascular system of the stem 7. Sympodial systems and patterns of nodal anatomy 8. The epidermis 9. The origin of secondary tissue systems and the effect of their formation on the primary body in seed plants 10. The vascular cambium: structure and function 11. Secondary xylem 12. The phloem 13. Periderm, rhytidome and the nature of the bark 14. Unusual features of structure and development in stems and roots 15. Secretion in plants 16. The root 17. The leaf 18. Reproduction and the origin of the sporophyte Glossary Index.
120 citations
TL;DR: The family Muntingiaceae, here described, includes the Neotropical, monotypic genera Muntingia and Dicraspidia, and probably Neotessmannia, which have previously been included in Elaeocarpaceae, Tiliaceae, or Flacourtiaceae.
Abstract: The family Muntingiaceae, here described, includes the Neotropical, monotypic genera Muntingia and Dicraspidia, and probably Neotessmannia, which have previously been included in Elaeocarpaceae, Tiliaceae, or Flacourtiaceae. Morphological data discussed here and molecular data published elsewhere indicate that none of these families can be regarded as closely related to these genera. Muntingiaceae belong to a clade that comprises core Malvales (Sterculiaceae, Tiliaceae, Bombacaceae, and Malvaceae) and several other families. Within this alliance, relationships are presently unresolved.
119 citations