Matches in SemOpenAlex for { <https://semopenalex.org/work/W2016054652> ?p ?o ?g. }
Showing items 1 to 59 of
59
with 100 items per page.
- W2016054652 endingPage "188" @default.
- W2016054652 startingPage "161" @default.
- W2016054652 abstract "1. The course of the leaf traces in Potamogeton is not typically monocotyledonous, for in the more robust species the three traces run down through one internode at the periphery of the central cylinder before entering the medulla, where they descend through a second internode, finally fusing with cauline strands. 2. At the points of fusion the bundles are found to be amphivasal, while they are collateral throughout their internodal course. 3. The phloem of the bundles at the base of a branch shows a marked swelling. 4. The cortical bundles present in some species of Potamogeton are not regarded as a primitive feature, since they do not occur in the fertile part of the floral axis and occur only sparingly if at all in the creeping stem. They enter the stem as small strands from the stipules and petioles and are not as a rule connected with the principal leaf traces. In Zostera and Cymodocea, however, there is a system of cortical bundles which are connected with all of the principal leaf traces except the median one. 5. The circle of collateral bundles found in the floral axis in Potamogeton and Triglochin is regarded as a relic of the ancestral dicotyledonous condition of the vascular system. 6. The evidence afforded by the vascular and floral structures indicates that Potamogeton is the most primitive genus of Potamogetonaceae. It shows more clearly than the other genera features characteristic of terrestrial life, though some of its species are apparently reduced forms. 7. Species of Potamogeton having both floating and submersed leaves and a central cylinder in which the bundles run separated from one another are regarded as the most primitive members of the genus. P. pulcher fulfils these requirements. 8. The other genera of Potamogetonaceae show further stages of reduction in accordance with their totally submersed habit. Their relationships are in some cases shown by the vascular structures. 9. In Naiadaceae the reduction is carried to such an extreme of simplicity that the affinities of the family are obscure. 10. Aponogetonaceae and Juncaginaceae are more typically monocotyledonous in their structure, and do not seem immediately related to Potamogetonaceae." @default.
- W2016054652 created "2016-06-24" @default.
- W2016054652 creator A5029427739 @default.
- W2016054652 date "1907-09-01" @default.
- W2016054652 modified "2023-09-23" @default.
- W2016054652 title "The Structure and Relationships of the Potamogetonaceae and Allied Families" @default.
- W2016054652 doi "https://doi.org/10.1086/329315" @default.
- W2016054652 hasPublicationYear "1907" @default.
- W2016054652 type Work @default.
- W2016054652 sameAs 2016054652 @default.
- W2016054652 citedByCount "22" @default.
- W2016054652 countsByYear W20160546522020 @default.
- W2016054652 crossrefType "journal-article" @default.
- W2016054652 hasAuthorship W2016054652A5029427739 @default.
- W2016054652 hasBestOaLocation W20160546522 @default.
- W2016054652 hasConcept C105702510 @default.
- W2016054652 hasConcept C132000320 @default.
- W2016054652 hasConcept C160148424 @default.
- W2016054652 hasConcept C167626615 @default.
- W2016054652 hasConcept C18903297 @default.
- W2016054652 hasConcept C2776180880 @default.
- W2016054652 hasConcept C2778600644 @default.
- W2016054652 hasConcept C34771814 @default.
- W2016054652 hasConcept C41451933 @default.
- W2016054652 hasConcept C59822182 @default.
- W2016054652 hasConcept C86803240 @default.
- W2016054652 hasConceptScore W2016054652C105702510 @default.
- W2016054652 hasConceptScore W2016054652C132000320 @default.
- W2016054652 hasConceptScore W2016054652C160148424 @default.
- W2016054652 hasConceptScore W2016054652C167626615 @default.
- W2016054652 hasConceptScore W2016054652C18903297 @default.
- W2016054652 hasConceptScore W2016054652C2776180880 @default.
- W2016054652 hasConceptScore W2016054652C2778600644 @default.
- W2016054652 hasConceptScore W2016054652C34771814 @default.
- W2016054652 hasConceptScore W2016054652C41451933 @default.
- W2016054652 hasConceptScore W2016054652C59822182 @default.
- W2016054652 hasConceptScore W2016054652C86803240 @default.
- W2016054652 hasIssue "3" @default.
- W2016054652 hasLocation W20160546521 @default.
- W2016054652 hasLocation W20160546522 @default.
- W2016054652 hasOpenAccess W2016054652 @default.
- W2016054652 hasPrimaryLocation W20160546521 @default.
- W2016054652 hasRelatedWork W1498314052 @default.
- W2016054652 hasRelatedWork W1983116475 @default.
- W2016054652 hasRelatedWork W1992111501 @default.
- W2016054652 hasRelatedWork W2005831169 @default.
- W2016054652 hasRelatedWork W2068302634 @default.
- W2016054652 hasRelatedWork W2084086992 @default.
- W2016054652 hasRelatedWork W2163282032 @default.
- W2016054652 hasRelatedWork W2282969273 @default.
- W2016054652 hasRelatedWork W2327530326 @default.
- W2016054652 hasRelatedWork W2988032301 @default.
- W2016054652 hasVolume "44" @default.
- W2016054652 isParatext "false" @default.
- W2016054652 isRetracted "false" @default.
- W2016054652 magId "2016054652" @default.
- W2016054652 workType "article" @default.