Cuscuta 



CONVOLVULACEAE 



771 



o ~ Bo 

 Map 1660 



Cuscuta cuspidata Engelm. 



~T3 



Map 1661 



Cuscuta qlomerata Choisy 



Stigmas capitate; calyx without or with small subtending bracts. 



Calyx lobes not broadly rounded and without a subtending bract; corolla mostly 

 funnel-shaped; stamens and styles not exserted 7003. Ipomoea, p. 776. 



Calyx lobes broadly rounded and with a subtending bract about 3 mm long; corolla 

 tubular, not expanded at the base, limb salver-shaped; stamens and style ex- 

 serted 7005. Quamoclit, p. 777. 



6968. CUSCUTA [Tourn.] L. Dodder 



[Yuncker. The genus Cuscuta. Mem. Torrey Bot. Club 18: 113-331. 

 1932. Yuncker. Notes on our Indiana Dodders. Proc. Indiana Acad. Sci. 

 1919: 157-163. 1921.] 



Stigmas linear; capsules circumscissile; plants usually found parasitic on legumes 

 (usually clover or alfalfa) ; although reported for Ind. we have no specimens. 



(See excluded species no. 510, p. 1082) C. Epithymum. 



Stigmas capitate; capsules not circumscissile. 



Sepals generally 5, distinct; flowers subtended by one or more bracts. 



Flowers on bracteolate pedicels, in loose panicles 1. C. cuspidata. 



Flowers closely sessile, in densely compact clusters. 



Inflorescence dense, ropelike; bracts oblong, scarious, acute, with recurved tips. 



2. C. glomerata. 



Inflorescence less dense and not particularly ropelike; bracts orbicular or oval 



(shape of the sepals) , not scarious, obtuse, closely appressed 



3. C. compacta. 



Sepals united, at least at the base; flowers 4- or 5-parted; flowers not subtended by 

 bracts. 

 Flowers commonly 5-parted. 



Corolla lobes reflexed, acute, with inflexed tips; capsules globose or depressed- 

 globose (not pointed) . 



Calyx lobes broadly overlapping at the sinuses to form angles 



4. C. pentagona. 



Calyx lobes not overlapping to form angles at the sinuses; flowers mostly 2-3 



mm long 5. C. campestris. 



Corolla lobes acute, erect to spreading; capsules ovoid or globose, not depressed 

 but usually pointed 6. C. Gronovii. 



