Difference between revisions of "Polanisia dodecandra subsp. trachysperma"

Revision as of 22:52, 16 December 2019

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

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.

Lower Taxa