54 ILLINOIS BIOLOGICAL MONOGRAPHS [144 



1.6 mm. long, light brown, globose, ovate or round, slightly oblique and 

 compressed; hilum oblong, linear, oblique. 



This species in some respects resembles the smaller forms of C. gronovii 

 but is separable by the ordinarily tetramerous flowers and the depressed, 

 capped capsule. 



Type location: "On the margins of ponds and swamps near St. Louis." 



Range: Across the continent from Maine to Oregon and Washington and 



southward to Virginia, Tennessee and Texas. 



Specimens examined: United States: Near 49th parallel of lat. (Lyall in 1858-59). 

 Maine; Orono (Briggs 1509). Massachusetts; Framingham (Sturtevant in 1890). Con- 

 necticut; Waterbury (Dubois in 1888), Greens Farms (Polard 239). New Jersey (Engel- 

 mann in 1879, Canby in 1862). Virginia; Little Falls of the Potomac (Mohr in 1894). New 

 York; Cayuga Lake (Dudley in 1882, Wiegand in 1895), west New York swamps (Van Sickle 

 %/ in 1894). Pennsylvania; Marysville (Small in 1888), Lancaster Co. (Porter in 1864), Easton 



(Porter in 1890 and in 1895), Harrisburg (Porter in 1879). Tennessee (Gattinger in 1886). 

 Ohio; Port Clinton (Mosely in 1897), Erie Co. (Mosely in 1898), Painesville (Beardslee in 

 1876), Cincinnati (Lloyd in 1890). Michigan; Jackson (Camp in 1893), Algonac (Cooper in 

 1901). Indiana; Clarke (Umbach in 1898), Dune Park (Chase 1982), Whiting (Hill in 1891), 

 Wells Co. (Deam 490, in 1899, 1903 & 1905)., Adams Co. (Deam 5363, 5364 in part), Porter 

 Co. (Deam 26482), Parke Co. (Deam 9889), Carroll Co. (Deam 15304), Allen Co. (Deam 

 1582), Randolph Co. (Deam 15382), Steuben Co. (Deam 15476). Illinois; Wabash Co. 

 (Schneck in 1880), Peoria (McDonald in 1885 and in 1894, Brendel), Ravinia (Sherff 

 in 1911), Vermillion Co. (McDougall in 1917), Oquawka (Patterson), Henderson Co. 

 (Patterson 10430 and in 1872), Carlinville (Andrews in 1890), Libertj^ille (Sherff 

 1896), Athens (Hall in 1861 and in 1867), Taylorville (Andrews in 1898), Sangamon 

 (_ Co. (.\ndrews in 1898), Beardstown (Geyer), Ringwood (Vasey in 1861), Urbana (Pease, 



Yuncker 999a, 999b, Clinton 11794, 11795, 11796, 28574, 30449, 30450). Wisconsin; Osceola 

 (Sheldard in 1892), Brown Co. (Schuette in 1894), Winnebago Co. (Kellerman in 1871), 

 Racine (Davis in 1879), Prairie du Chien (Hall in 1861), Madison (Hall in 1861). Minnesota; 

 Winona (Holzinger in 1889), Yellow Medicine Co. (Jacobs in 1888), Glyndon (Dewart in 

 1892). Iowa; Fayette Co. (Fink 207, 632), Ames (Hitchcock in 1894), Vinton (Davis in 

 1876). Missouri; St. Louis (Engelmann in 1841, taken as the type, in the Engelmann Herb., 

 also in 1842 and in 1860), Clark Co. (Bush in 1892), Jackson Co. (Bush 262). Kansas; 

 Lawrence (Stevens). Nebraska; Lawsville (Williams in 1888), Exeter (Wibbe in 1889 in part), 

 Nickolls Co. (Hedgcock in 1894), Banks of the Missouri river (Hayden). Nevada; Humboldt 

 Pass (Watson 937). Utah; Salt Lake City (Jones 1918, Garrett 2213), Ogden (Tracy in 

 1887). Oregon; Hood river (Henderson in 1884). Washington; Klickitat Co. (Suksdorf 

 in 1883). California; Mt. Shasta (Grant 5217). New Mexico (Wright 1626 = 578, 1629 = 



124), Otero Co. (Wooton in 1899). Texas; Dallas (Reverchon in 1878). 



* 



Cuscuta racemosa chiliana Engelmann 



[Figures 36 and 94] 



C. racemosa chiliana Engelmann, Trans. Acad. Sci. St. Louis, 1:505, 1859. 



No North American sjoionymy; for foreign synonymy see Engelmann, Trans. Acad. 

 Sci. St. Louis, 1:505, 1859. 



Stems slender to medium. Flowers glabrous, about 3 mm, long, pen- 

 tamerous, on pedicels as long as or mostly longer than the flowers in loose, 

 racemose cymes; calyx much shorter than the corolla tube; lobes short, 

 deltoid, acute; corolla campanulate; lobes shorter than the tube, spreading 



y 



