52 ILLINOIS BIOLOGICAL MONOGRAPHS [142 



(without designation of collector, in 1898). Colorado; Grand Junction (Hedgcock in 1901), 

 Boulder (Daniels 696), Naturita (Payson 588). Nevada; Reno (Hillman). Montana; 

 Bozeman (Blankinship 407). Utah (Jones 5482b, 5653, Eastwood 91, Rydberg & Garrett 

 9918, 10013, 10014, Hedrick in 1899), Salt Lake City (McKinney in 1916). Washington; Waits- 

 burg. (Horner 639). Oregon; Mouth of the Walla Walla River (Geyer 674), Multnomah Co. 

 (Howell 336). California; Santa Clara Co. (Abrams 2230, Baker 1761), San Jose (Rattan 

 4d), Redondo (Grant in 1901, McClatchie in 1892), southern California (Grant 3629). 

 Mariposa (Congdon in 1902), Bouldin Island (Brandegee). Arizona (Rusby 245, 295), Camp 

 Lowell (Rothrock 708), Tucson (Pringle 144, 13797, and in 1891), Solomonville (Goodding 

 509), Flagstaff (McDougal 378), Ash Creek (Rothrock 311), Cosnino (Jones 4032). New 

 Mexico (Rusby 85, and in 1880), Frisco River (Wooton in 1900), Chavez (Wooton in 1892), 

 Dona Ana Co. (Wooton & Stanley 3988 and in 1906), Mangas Springs (Metcalf in 1903), 

 Alberque (Jones 4116 and in 1884, Herrick in 1904), La Luz (Wooton in 1905), San Juan Co. 

 (Standley 6958). Texas (Thuron in 1890, Lindheimer 664, 126, taken as the type, in the 

 Engelmann Herb., Wright in 1847), Dallas (Reverchon in 1880), Concho (Havard 2), San 

 Marcos (Stanfield in 1898). 



Canada: Assiniboia (Macoun 11852). Saskatchewan (Drummond). Manitoba; Morris 

 (Macoun 23972). 



Mexico: Jalisco (Pringle 3111). Chihuahua; Santa Rosalia (Palmer 382). Lower 

 California; San Jorge (Brandegee 4), Baja (Brandegee). 



West Indies: Cuba; Havana (Leon 7707, Leon & Eckman 4270). Bahamas; Andros 

 (Wight 228). Jamaica; Claredon (Britton 3798). Porto Rico; Arecibo to Utuado (Britton 

 & Co well 306). 



Cuscuta pentagona verrucosa (Engelmann) n. comb. 



[Figure 111] 

 C. verrucosa Engelmann, Amer. Journ. Sci. & Arts, 43: 341, pi. 6, fig. 25, 1842. — Choisy in 



DC, Prodromus, 9:461, 1845. 

 C. verrucosa glabrior Engelmann, Amer. Journ. Sci. & Arts, 43:341, 1842. 

 C. arvensis verrucosa Engelmann, Trans. Acad. Sci. St. Louis, 1:495, 1859. 



Pedicels usually longer than in the other varieties, equalling the 

 flowers or longer; calyx lobes more triangular, obtuse, usually shorter than 

 the corolla, fleshy verrucose; capsule somewhat verrucose to papillate. 



Type locality: Texas. Range: Louisiana, Indian Territory, Texas 

 and northern Mexico. 



Specimens examined: United States: Louisiana; Sulphur (Palmer 7709). Indian 

 Territory; Limestone Gap (Butler 4), Between Fts. Cobb & Arbuckle (Palmer 202). Texas 

 (Drummond III 247, taken as the type in the Engelmann Herb., Ruth 502, Lindheimer 127, 

 473), Corpus Christi (Heller 1549) Dallas (Reverchon in 1878, HaU 492, 493 in part), Galves- 

 ton island (Joor in 1877), San Antonio (Palmer 12914, Larrabee in 1900). 



Mexico: (Berlandier 2457). Coahuila (Palmer 723), Saltillo (Palmer 218, 307, 730), 

 Parras (Gregg 401, 417). San Luis Potosi; San Luis Potosi (Berlandier in 1827). Coahuila 

 £r Ncuvo Leon (Palmer 919). 



Cuscuta pentagona pubescens (Engelmann) n. comb. 

 C. arvensis pubescens Engelmann, Trans. Acad. Sci. St. Louis, 1:495, 1859. 



All parts of the flower more or less papillate-pubescent. 



Type locality: Western Texas. Range: New Mexico and Texas. 



Specimens examined: United States: New Mexico (Wright 1631, 1635). Texas 

 (Wright 2, Lindheimer in 1847, taken as the type, in the Engelmann Herb.), El Paso (Wright 

 519, 523), Bexar Co. (Jermy 34) Llano Co. (Nealley 84), on the Pedernales river (Lindheimer 

 in 1847), along the Pecos. (Wright 574.) 



