MonograpMj of the North American Cuscutinece. 335 



* Stigmas capitate. — European. 

 t Flotoers generally pentamerous. 



2. C. Epithymum, Linn. Segments of the calyx and corolla acuminate. — Europe. 



3. C. Epilinum, Weihe. Flower globose: segments of the calyx and corolla 

 orbicular, abruptly acuminate. — Europe. 



4. C. PLANiFLORA, Tenore. Flower campanulate, open. — Italy, 

 ft Floioers generally tetramerous. 



5. C. EuROP^A, Linn. Lobes of the calyx and corolla obtuse. — Europe. 

 ** Stigmas capitate. — American. 



A. Corolla cylindric, its remains covering the ripening capsule, 

 t Floioers generally pentamerous. 



6. C. Chilensis, Ker. Corolla much longer than the campanulate calyx: an- 

 thers sessile. — Chili. 



7. C. Cephalanthi. Lobes of the calyx and corolla obtuse: anthers with fila- 

 ments. — St. Louis. 



tt Flowers generally tetramerous. 



8. C. CoRTLi. Lobes of the calyx and corolla acute. — St. Louis. 



B. Corolla campanulate, its remains persistent at the base of the ripening capsule, 

 t Flowers generally pentamerous. 



9. C. T0LGITAGA. Carinate lobes of the calyx and the lobes of the corolla ob- 

 tuse.— Vermont to Georgia and Missouri. 



10. C. Saururi. Smooth, lobes of the calyx and corolla obtuse. — Western New 

 York to Missouri. 



11. C. pentagona. Lobes of the 5-angled calyx smooth, roundish ; those of 

 the corolla acuminate. — Virginia. 



12. C. VERRUCOSA. Lobes of the campanulate calyx verrucose, roundish ; those 

 of the corolla acuminate. — Texas. 



1 1 Flowers generally tetramerous. 



13. C. PoLYGONORUM. Lobes of the calyx and corolla acute. — St. Louis. 

 II. Lepidanche. Calyx consisting of 10-15 imbricated sepals. 



1. L. CoMPosiTARTTM. Westem United States. 



(1.) CUSCUTA, Linn. (Dodder.) 



Calyx monosepalous, 4-5-cleft, persistent. Corolla campanu- 

 late or urceolate, 4-5-cleft, styles one or two. Capsule 2-celled, 

 4-seeded. 



Twining parasitic plants, bearing the general character of the 

 family. The stem is filiform, simple or generally branched, of a 

 whitish, yellowish or orange color, with scaly leaves. The in- 

 florescence is a cyme, (with a central flower opening first, and 

 axillary or lateral flowers, which open afterwards,) with whitish 

 sessile or pedunculate flowers, more or less clustered (conglome- 

 rate) in some, and rather loose (commonly called paniculate) in 

 other species. Some bracts are observable on the peduncles and 

 pedicels, but they are always easily distinguished from the calyx. 



The first or central flowers of the inflorescence are mostly 

 6-parted, but the lateral or secondary ones are in some species 



