Douglas' Knotweed

Polygonum douglasii Greene

2009 Barry Breckling cc-by-nc-sa-3.0

Polygonum douglasii (Douglas' Knotweed) is a species of annual herb in the family Polygonaceae. They have a self-supporting growth form. They are native to The Contiguous United States and Canada. They have simple, broad leaves. Individuals can grow to 0.11 m.

URI: http://purl.obolibrary.org/obo/FLOPO_0980071
Definition: Of plant duration, a plant whose life span ends within one year after germination, e.g. a winter annual germinating in the autumn and flowering in the spring (esp. in Mediterranean climates), approximately synonymous to therophyte, c.f. biennial, ephemeral, perennial, c.f. also of flowering with respect to architecture, hapaxanthic, monocarpic, pleonanthic.
Attribution: Stevens, P. F. (2001 onwards). Angiosperm Phylogeny Website. Version 12, July 2012. Glossary, http://www.mobot.org/mobot/research/apweb/top/glossarya_h.html#annual

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URI: http://purl.obolibrary.org/obo/FLOPO_0022142
Definition: whole plant herbaceous

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URI: http://eol.org/schema/terms/self-supportingGrowthForm
Definition: an organism relying on its own supportive tissues rather than a climbing habit to achieve vertical growth

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URI: http://www.wikidata.org/entity/Q578170

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URI: http://www.geonames.org/6251999

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URI: http://purl.obolibrary.org/obo/PO_0020042
Definition: A leaf in which the lamina is undivided

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URI: http://purl.obolibrary.org/obo/PATO_0002359
Definition: A quality inhering in a bearer by virtue of the bearer's width being notably higher than its length.

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EOL has data for 21 attributes, including:

cellularity
- URI: http://purl.obolibrary.org/obo/PATO_0001992
- Definition: An organismal quality inhering in a bearer by virtue of the bearers consisting cells. [ PATOC:GVG ]
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multicellular
- URI: http://purl.obolibrary.org/obo/PATO_0001993
- Definition: A cellularity quality inhering in a bearer by virtue of the bearers consisting of more than one cell. [ PATOC:GVG ]
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geographic distribution includes
- URI: http://eol.org/schema/terms/Present
- Definition: This organism is known to be present in this location or region. Not exclusive; other regions may also be reported.
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Maine
- URI: http://www.geonames.org/4971068
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habitat
- URI: http://purl.obolibrary.org/obo/RO_0002303
- Definition: x has habitat y if: x is an organism, y is a habitat, and y can sustain and allow the growth of a population of x
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terrestrial
- URI: http://purl.obolibrary.org/obo/ENVO_00000446
- Definition: A biome that applies to the terrestrial realm.
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Leaf Complexity
- URI: http://purl.obolibrary.org/obo/FLOPO_0007484
- Definition: whether a leaf is intricate or compounded
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simple
- URI: http://purl.obolibrary.org/obo/PO_0020042
- Definition: A leaf in which the lamina is undivided
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leaf morphology
- URI: http://purl.obolibrary.org/obo/FLOPO_0019932
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broad
- URI: http://purl.obolibrary.org/obo/PATO_0002359
- Definition: A quality inhering in a bearer by virtue of the bearer's width being notably higher than its length.
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native range includes
- URI: http://eol.org/schema/terms/NativeRange
- Definition: Lists jurisdictions in which a given organism is a member of the undisturbed fauna or flora.
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The Contiguous United States
- URI: http://www.wikidata.org/entity/Q578170
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photosynthetic pathway
- URI: http://eol.org/schema/terms/photosyntheticPathway
- Definition: the biochemical pathway a plant uses to gain carbon for growth and reproduction. Plants have evolved three photosynthetic pathways, each in response to distinct environmental conditions, resulting in differences in their ecological patterns of growth and distribution.
- Comment: https://www.nature.com/scitable/knowledge/library/the-ecology-of-photosynthetic-pathways-15785165
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c3 photosynthetic plant
- URI: https://www.wikidata.org/entity/Q286954
- Definition: one of three metabolic pathways for carbon fixation in photosynthesis, along with C4 and CAM. This process converts carbon dioxide and ribulose bisphosphate (RuBP, a 5-carbon sugar) into 3-phosphoglycerate through the following reaction:\r\n\r\nCO2 + H2O + RuBP → (2) 3-phosphoglycerate\r\n\r\nThis reaction occurs in all plants as the first step of the Calvin–Benson cycle.
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plant growth form
- URI: http://purl.obolibrary.org/obo/FLOPO_0900032
- Definition: whole plant growth form. eg: herbaceous, tree, liana
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herb
- URI: http://purl.obolibrary.org/obo/FLOPO_0022142
- Definition: whole plant herbaceous
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plant lifeform
- URI: http://purl.obolibrary.org/obo/FLOPO_0900022
- Definition: whole plant lifeform
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terrestrial plant
- URI: http://eol.org/schema/terms/terrestrialPlant
- Definition: A terrestrial plant is a plant that grows on or in or from land. Other types of plants are aquatic (living in water), epiphytic (living on trees) and lithophytic (living in or on rocks)
- Attribution: https://en.wikipedia.org/wiki/Terrestrial_plant
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produces
- URI: http://purl.obolibrary.org/obo/RO_0003000
- Definition: This organism produces this material or substance, either during its life or after death. A produces B if some process that occurs in A has output B.
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oxygen
- URI: http://purl.obolibrary.org/obo/CHEBI_15379
- Definition: molecular oxygen, O2
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trophic guild
- URI: http://eol.org/schema/terms/TrophicGuild
- Definition: A group of species that exploit the same food resources, and/or use the same feeding or foraging methods. http://en.wikipedia.org/wiki/Guild_(ecology)
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photoautotroph
- URI: http://purl.obolibrary.org/obo/ECOCORE_00000130
- Definition: An autotroph which is capable of transforming light into chemical energy.
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type specimen repository
- URI: http://eol.org/schema/terms/TypeSpecimenRepository
- Definition: The institution that holds a type specimen for a given species. The recommended best practice is to use the identifier in a collections registry such as the Biodiversity Collections Index (http://www.biodiversitycollectionsindex.org/).
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Harvard UNiversity, Museum of Comparative Zoology
- URI: http://biocol.org/urn:lsid:biocol.org:col:33791
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Known occurrences, collected specimens and observations of Douglas' knotweed. View this species on GBIF

2009 Barry Breckling cc-by-nc-sa-3.0