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Definition of Protophloem
1. Noun. The form of phloem that is initially formed, composed of narrow, thin-walled cells ¹
¹ Source: wiktionary.com
Definition of Protophloem
1. [n -S]
Lexicographical Neighbors of Protophloem
Literary usage of Protophloem
Below you will find example usage of this term as found in modern and/or classical literature:
1. Comparative Anatomy of the Vegetative Organs of the Phanerogams and Ferns by Anton Bary (1884)
"... bands on the outer edge of the phloem, inside the layer of cells following и,
indicate the collapsed primitive elements of the phloem (protophloem). ..."
2. Dwarf Mistletoes: Biology, Pathology, and Systematics by Frank G. Hawksworth, Delbert Wiens (1998)
"protophloem fibers are present in all Arceuthobium species. ... However, protophloem
elements are naturally ephemeral and not easily observed or identified ..."
3. Microscopic Botany: A Manual of the Microscope in Vegetable Histology by Eduard Strasburger (1887)
"On the ends, they extend with their protoxylem and wood-parenchyma to the
protophloem tissue. Between the wood bands is the bast, the larger cells being the ..."
4. Strasburger's Text-book of Botany by Eduard Strasburger, Hans Fitting, William Henry Lang (1921)
"They form the protoxylem and protophloem respectively. Only when growth in length
is finished do the bundles become fully differentiated, ..."
5. Report of the Annual Meeting (1900)
"The earliest protoxylem appears along the inner edge of the steles, while the
protophloem arises on the outer edge of each stele as a discontinuous arc of ..."
6. The Eusporangiatae: The Comparative Morphology of the Ophioglossaceae and by Douglas Houghton Campbell (1911)
"protophloem is developed upon the outer side of the stele in the form of discontinuous
... This protophloem does not occur upon the inner side of the xylem. ..."
7. The Eusporangiatae: The Comparative Morphology of the Ophioglossaceae and by Douglas Houghton Campbell (1911)
"protophloem is developed upon the outer side of the stele in the form of discontinuous
... This protophloem does not occur upon the inner side of the xylem. ..."
8. Handbook of Practical Botany for the Botanical Laboratory and Private Student by Eduard Strasburger (1889)
"follow externally narrower protophloem elements. ... Isolated protophloem elements
are likewise found scattered amongst the sieve-tubes, ..."
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