This section is from the book "An Illustrated Flora Of The Northern United States, Canada And The British Possessions Vol3", by Nathaniel Lord Britton, Addison Brown. Also available from Amazon: An Illustrated Flora of the Northern United States, Canada and the British Possessions. 3 Volume Set..
Cuscuta indecora Choisy, Mem. Soc. Gen. 9: 278.
Stems rather stout; flowers 1 1/2" long, pedi-celled in loose cymes, more or less papillose. Calyx 5-lobed, the lobes ovate to lanceolate, acute, mostly shorter than the corolla-tube; corolla campanulate, 5-lobed, the lobes triangular, minutely crenulate, spreading, nearly as long as the tube, their tips inflexed; scales ovate, erect, irregularly fringed with short processes all around; stamens slightly exserted or included; stigmas capitate; capsule oblong, acute, enveloped by the withering corolla.
On various herbs and low shrubs, Illinois to Nebraska, south to Florida, Texas and Mexico, in several races. Also in the West Indies and South America. Corolla white; stigmas often yellow or purple. June-Aug.
Cuscuta Coryli Engelm. Am. Journ. Sci. 43: 337.
f. 7-11. 1842. Cuscuta inflexa Engelm. Trans. St. Louis Acad. 1:
Stems coarse; flowers about 1" long, pedi-celled in loose or rather dense cymes. Calyx 4-5-lobed, the lobes triangular or triangular-lanceolate, acutish, about as long as the corolla-tube; corolla campanulate, 4-5-lobed, the lobes minutely crenulate. nearly erect, triangular, acute, about as long as the tube, their tips inflexed; scales small, oval, obtuse, often with only a few processes on each side; stamens scarcely exserted; styles shorter than the ovary; stigmas capitate; capsule oblong,pointed, enveloped or at length capped by the withering corolla.
On the hazels and other shrubs or tall herbs, Connecticut to Virginia, South Dakota and Arkansas. July-Aug.
Cuscuta Cephalanthi Engelm. Am. Journ. Sci. 43: 336. pl. 6. f. 1-6. 1842.
Cuscuta tenuiflora Engelm.; A. Gray, Man. 350. 1848.
Plant yellow, stems rather coarse; flowers about 1" long, short-pedicelled, clustered; calyx 5-lobed, the lobes ovate, obtuse, shorter than the corolla-tube; corolla cylindric-campanulate, its lobes ovate, obtuse and rounded, spreading, one-half the length of the tube or less; scales about as long as the lobes, fringed mainly toward the apex with irregular processes; stamens included; styles slender, about as long as the ovary, shorter than the ripe capsule; stigmas capitate; capsule depressed-globose, 1 1/2" in diameter, surrounded or capped by the withering, at length deciduous corolla.
On shrubs and tall herbs, Pennsylvania to Minnesota, Texas and Arizona. July-Aug.
Stems yellow to orange, slender, high-climbing; flowers usually short-pedicelled, numerous in dense cymes. Calyx not bracted, its lobes ovate, obtuse, shorter than the corolla-tube; corolla campanulate, about 1 1/2" long, the lobes ovate, obtuse, rounded, spreading, nearly as long as the tube, the scales narrow, equalling or longer than the tube, thickly fringed about the summit and sparingly along the sides with long slender processes; styles slender, not as long as the ovary; stigmas capitate; capsule globose, short-pointed or pointless, 1 1/2 " in diameter, enveloped or capped by the withering deciduous corolla.
On herbs and low shrubs, Nova Scotia to Manitoba, Montana, Florida and Texas. Scald-weed. Devil's-gut July-Aug.