Difference between revisions of "Polanisia dodecandra subsp. trachysperma"
Rhodora 68: 47. 1966.
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|common_names=Sandyseed or western clammyweed | |common_names=Sandyseed or western clammyweed | ||
| + | |special_status={{Treatment/ID/Special_status | ||
| + | |code=W | ||
| + | |label=Weedy | ||
| + | }} | ||
|basionyms={{Treatment/ID/Basionym | |basionyms={{Treatment/ID/Basionym | ||
|name=Polanisia trachysperma | |name=Polanisia trachysperma | ||
|authority=Torrey & A. Gray | |authority=Torrey & A. Gray | ||
| + | |rank=species | ||
|publication_title=Fl. N. Amer. | |publication_title=Fl. N. Amer. | ||
|publication_place=1: 669. 1840 | |publication_place=1: 669. 1840 | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Polanisia dodecandra subsp. trachysperma | name=Polanisia dodecandra subsp. trachysperma | ||
| − | |||
|authority=(Torrey & A. Gray) H. H. Iltis | |authority=(Torrey & A. Gray) H. H. Iltis | ||
|rank=subspecies | |rank=subspecies | ||
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|publication title=Rhodora | |publication title=Rhodora | ||
|publication year=1966 | |publication year=1966 | ||
| − | |special status= | + | |special status=Weedy |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V7/V7_263.xml |
|genus=Polanisia | |genus=Polanisia | ||
|species=Polanisia dodecandra | |species=Polanisia dodecandra | ||
Latest revision as of 22:32, 5 November 2020
Leaflets: blade apex acute to obtuse. Inflorescence bracts lanceolate to ovate. Petals white, (7–)8–13(–16) mm. Stamens (6–)12–28(–40) mm, longest ones ca. 2 or more times as long as petals. Seeds roughened. 2n = 20.
Phenology: Flowering summer–early fall.
Habitat: Gravelly or sandy, sunny places along streams, sandy places, open woodlands, grasslands, roadsides
Elevation: 100-1500(-2100) m
Distribution
Alta., Man., Ont., Sask., Ala., Ariz., Ark., Calif., Colo., Conn., Idaho, Ill., Iowa, Kans., Ky., La., Md., Mass., Mich., Minn., Mo., Nebr., Nev., N.Mex., N.Dak., Ohio, Okla., Pa., S.Dak., Tex., Utah, Va., Wash., W.Va., Wyo., Mexico.
Discussion
Subspecies trachysperma is found mainly in the Great Plains and western states. Populations in the eastern United States are presumably adventive, as are those in eastern Ontario, where it has been found spreading in disturbed areas, such as quarries and roadsides (B. McBride 2006).
Selected References
None.