3Q 



CUSCUTACEAE. 



[Vol. III. 



8. Cuscuta Grondvii Willd. Grono- 



vius' Dodder. L,ove-vine. (Fig. 2963.) 



C. Gronovii Willd.: R. & S. Syst. 6: 205. 1820. 

 Cuscuta vulgivaga Engelm. Am. Journ. Sci. 43: 

 338. pi. 6 /, 12-16. 1842. 



Stems yellow to orange, slender, high-climb- 

 ing; flowers usually short-pedicelled, num- 

 erous in dense cymes. Calyx not bracted, 

 its lobes ovate, obtuse, shorter than 

 the corolla-tube; corolla campanulate, about 

 i^'Mong, 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%" in diameter, 

 enveloped or capped by the withering de- 

 ciduous corolla. 



On herbs and low shrubs. Nova Scotia to Man- 

 itoba, Florida and Texas. Variable. July-Aug. 



g. Cuscuta rostrata Shuttlw. Beaked 



Dodder. (Fig. 2964.) 



Cuscuta rostrata Shuttlw. ; Engelm. Bost. Journ. 

 Nat. Hist. 5: 225. 1845. 



Stems coarse, yellowish white; flowers 

 larger than in any of our other species, 

 loosely cymose, pedicelled. Calyx gamo- 

 sepalous, 5-lobed, the lobes ovate-triangular, 

 shorter than the corolla-tube; corolla cam- 

 panulate, 2 // -3 // long, white, its lobes 

 broadly ovate, obtuse, about as long as the 

 calyx-lobes; scales narrow, sometimes spatu- 

 late, shorter than the tube, heavily fringed 

 at the summit and sparingly along the sides 

 with long slender processes; stamens in- 

 cluded; styles slender, about as long as the 

 flask-shaped ovary; stigmas capitate; cap- 

 sule oval, long-beaked. 



On herbs and shrubs, Maryland to South Car- 

 olina and Georgia in the Alleghanies. July-Sept. 



10. 



Cuscuta cuspidata Engelm. Cus- 

 pidate Dodder. (Fig. 2965.) 



Cuscuta cuspidata Engelm. Bost. Journ. Nat. Hist. 



5: 224. 1845. 



Plant yellowish; stems slender; flowers in 

 loose panicled cymes, about \ l /t f/ long. Calyx 

 of 5 distinct entire sepals, shorter than the 

 corolla-tube, with 2-4 similar bracts at its base 

 and often others on the pedicels; sepals orbicu- 

 lar to lanceolate, cuspidate, mucronate or acum- 

 inate; corolla nearly salverform, its lobes trian- 

 gular-lanceolate or oblong, acute or cuspidate, 

 spreading, about one-half the length of the tube; 

 scales narrow, usually less than one-half as long 

 as the tube, fringed all around with short irre- 

 gular processes; stamens not exserted; styles 

 very slender, longer than the ovary; stigmas 

 capitate; capsule bearing the withered corolla 

 on its summit. 



On coarse herbs, Nebraska to Missouri and Texas. 

 July-Sept. 



