PIPER—-FLORA OF THE STATE OF WASHINGTON. 455 
Capsule globose. 
Flowers sessile; style shorter than the ovary... .--- 5. C. arvensis. 
Flowers pedicelled. 
Stems coarse; calyx lobes obtuse..........---- 6. C. cephalanthi. 
Stems fine; calyx lobes acute........---------- 7. C. californica. 
1. Cuscuta epithymum Murr.; L. Syst. ed. 13; 140. 1774. 
Tyre Locatity: None given, but European. 
SPECIMENS EXAMINED: Vashon Island, Gardner 210; Seattle, Piper. 
2. Cuscuta planiflora Tenore, Fl. Nap. 3: 250. 1824-29. 
Type LocaLity: Near Naples, Italy. 
RanGe: Introduced in the western United States. 
SPECIMENS EXAMINED: Entiat, Mr. Grover in 1898. 
That this species is perfectly distinct from C. epithymum has clearly been demonstrated 
by the studies of Mr, F. H. Hillman. 
8. Cuscuta squamigera (Engelm.). 
Cuscuta californica squamigera Engelm. Trans. St. L. Acad. 1: 499. 1859. 
Cuscuta subinelusa abbreviata Engelm. op. cit. 500. 1859. 
Cuscuta salina Engelm. in A. Gray, Bot. Cal. 1: 536. 1876. 
Type Locauitry: “Saline soil in the Rio Virgen, Utah, on Suaeda.”’ 
Rance: British Columbia to California and Arizona. 
SPECIMENS EXAMINED: Port Angeles, Piper, September 1, 1895; Port Ludlow, Binns; 
Coupeville, Gardner 218; Seattle, Piper in 1889; Shelton, Piper, August 10, 1899; Tacoma, 
Flett 77. 
In Cooper’s report this species was called C. umbrosa Beyrich. 
ZONAL DISTRIBUTION: Humid Transition. 
4. Cuscuta indecora Choisy, Mem. Soc. Phys. Geneva 9: 278. 1841. 
Type Locauiry: “ Hab. Mexicam ad Matamoras.”’ 
Rance: Washington to California, eastward to Illinois and Florida. 
SPECIMENS EXAMINED: Waitsburg, Horner, October 5, 1893, on alfalfa and prickly 
lettuce. 
5. Cuscuta arvensis Beyrich; Hook. Fl. Bor. Am. 2: 77. 1838. 
Type tocatity: “N. W. America.’’ Collected by Douglas. 
Rance: Washington to New York, southward to California and Florida. 
SPECIMENS EXAMINED: Waitsburg, //orner, on alfalfa, October 5, 1893. 
5a. Cuscuta arvensis calycina Engelm. Trans. St. Louis Acad. 1: 495. 1859. 
Type Locatity: Texas. 
In the original description Engelmann includes Geyer’s no. 674, collected at the “mouth of 
the Walla Walla River, on the muddy borders, infesting the stems of Xanthium microcarpon, 
September.”” We have not seen this specimen nor do we know the plant. 
6. Cuscuta cephalanthi Engelm. Am. Journ. Sci. 48: 336. 1842. 
Cuscuta tenuiflora Engelm.; A. Gray, Man. 350. 1848. 
Type Locauity: ‘ Near St. Louis,’’ Missouri. 
Rance: Washington to Saskatchewan, southward to Arizona, Texas, and Pennsylvania. 
SPECIMENS EXAMINED: Ophir, Elmer; North Yakima, Piper 1796; Snohomish County, 
Gardner 217; Waitsburg, Horner 569. 
ZONAL DISTRIBUTION: Transition. 
7. Cuscuta californica Choisy, Mem. Soc. Phys. Geneva 9: 279. 1841. 
Type Locauity: “Tab. nov. California.’ Collected by Douglas. 
Rance: Washington to California. 
