Cuscuta gronovii var. gronovii

WeedyIllustrated
Treatment appears in FNA Volume 14.

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.

Lower Taxa

None.
Mihai Costea +  and Guy L. Nesom +
Willdenow in J. J. Roemer et al. +
Grammica +
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 +  and introduced in Europe. +
20–300 m. +
wetland margins, wet forests. +
Flowering Jun–Nov. +
Weedy +  and Illustrated +
Cuscuta gronovii var. gronovii +
Cuscuta gronovii +
variety +