Cuscuta gronovii var. gronovii
Calyces 1/2 corolla tube length, lobes ovate to suborbiculate, bases overlapping. Corollas: tube campanulate, 1.5–2.5 mm, lobes 1/3 tube length. Capsules loosely surrounded by withered corolla. 2n = 30.
Phenology: Flowering Jun–Nov.
Habitat: wetland margins, wet forests.
Elevation: 20–300 m.
Distribution
Alta., Man., N.B., N.S., Ont., P.E.I., Que., Sask., Ala., Ariz., Ark., Colo., Conn., D.C., Fla., Ga., Idaho, Ill., Ind., Iowa, Kans., Ky., La., Maine, Md., Mass., Mich., Minn., Miss., Mo., Mont., Nebr., N.H., N.J., N.Y., N.C., N.Dak., Ohio, Okla., Oreg., Pa., R.I., S.C., S.Dak., Tenn., Tex., Utah, Vt., Va., W.Va., Wis., West Indies, introduced in Europe.
Discussion
In the flora area, var. gronovii is the third most widespread dodder after Cuscuta campestris and C. indecora. Rarely, some plants may have capsules apically narrowed into a neck to 1 mm, reminiscent of C. rostrata.
Variety gronovii is a weed in cranberry crops in Massachusetts, New Jersey, and Wisconsin.
Selected References
None.