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dc.contributor.authorSmoot, Wallie Isadoreeng
dc.date.issued1906eng
dc.date.submitted1906eng
dc.descriptionContribution No 9 from the Botanical Laboratory of the University of Missourieng
dc.descriptionItem lacks degree informationeng
dc.descriptionLast 37 leaves are blankeng
dc.descriptionTypescripteng
dc.descriptionIncludes bibliographical referenceseng
dc.descriptionM.A. University of Missouri 1906eng
dc.description.abstractThe achenes of Polygonum Virginianum Linnaeus have a particularly efficient mode of dispersal. The long two-parted styles are persistent and become lignified during the process of development. If, after maturity, these projecting styles are struck by any object with sufficient impact, the achenes are thrown off with force enough to carry them a distance of three or four meters. This paper relates the results of a histological study of the tissues in question. Since achenes fly off with a force entirely disproportionate to that which strikes them, it may be assumed that there is some tension existing in the pedicels which, when released, throws the achenes from the plant. It has been supposed that the existing tension was given by changes in the tissues of the pedicel as they became dry. The attempt was made to discover whether changes might be found in the structure or arrangement of the tissues sufficient to account for the phenomenon of dispersal.eng
dc.description.digitizationDigitized at the University of Missouri--Columbia MU Libraries Digitization Lab in 2011.eng
dc.format.extent8, [37] leaveseng
dc.identifier.merlinb24901337eng
dc.identifier.oclc26731716eng
dc.identifier.urihttps://hdl.handle.net/10355/15440
dc.identifier.urihttps://doi.org/10.32469/10355/15440eng
dc.languageEnglisheng
dc.publisherUniversity of Missourieng
dc.relation.ispartofcollectionUniversity of Missouri--Columbia. Graduate School. Theses and Dissertationseng
dc.relation.ispartofcommunityUniversity of Missouri-Columbia. Libraries. MU Libraries Locally Digitized Materialseng
dc.rightsOpenAccess.eng
dc.rights.licenseThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License.eng
dc.subject.lcshPolygonum -- Seeds -- Dispersaleng
dc.titleThe mechanism of seed dispersal in polygonum virginianumeng
dc.typeThesiseng
thesis.degree.disciplineBotany (MU)eng
thesis.degree.grantorUniversity of Missouri--Columbiaeng
thesis.degree.levelMasterseng
thesis.degree.nameM.A.eng


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