147] NORTH AMERICAN AND WEST INDIAN CUSCUTA—YUNCKER 57 



Big Stone Lake (Griffiths & Slosser in 1894), Watertown (Griffiths & Slosser 302). Nebraska; 

 Bottoms of Yellowstone river (Hayden 26) , Thomas Co. (Rydberg, two collections with num- 

 ber 1688, one collected August 26 and the other August 14, 1893), Holt Co. (Clements 2799), 

 Ashland (Williams in 1889), Long Pine (Bates in 1896). Missouri; St. Louis Co. (Engelmann 

 in 1860, 1842, 1843, August 1841 and Sept. 1841, taken as the type, in the Engelmann Herb., 

 Eggert in 1879, Craig in 1908, Greenman 3800, Garber in 1911, Drushell in 1916), Barry Co. 

 (Bush 202, 327, 3244, and without number in 1892), MacDonald Co. (Bush 28), Baring, 

 (Bush 6), Polk Co. (Standley 9937), Courtney (Bush 411, 1815), Sarcoxie (Palmer 3197), 

 Meramec (Pammel), Stone Co. (Trelease 1113), Seligman (Dewart in 1892), Anderson 

 (Bush in 1892), Joplin (Palmer 3835). Iowa; Decatur Co. (Fitzpatrick 25). Indian 

 Territory; Limestone Gap (Butler 19, 50, 94 and 11236?). New Mexico (Fendler 658) 

 Arizona; Grand Canyon (Eggert in 1886). Texas; Williamson Co. (Bodin 230), Calvert 

 (Pammel in 1888), Fort Smith (Ark.) to the Rio Grande (Bigelow 8). Montana; Popular 

 (Blankinship in 1900). 



Cuscuta indecora Choisy 



C. indecora Choisy, Mem. Soc. Phys. et Hist. Nat. Geneve, 9:278, pi. 3, fig. 3, 1841; and in 

 DC, Prodromus, 9:457, 1845.— Matthew, Bull. Torr. Bot. Club, 20, pi. 164, fig. 4, 1893.—, 

 Britton & Brown, Illustr. Flora, 3:29, fig. 2960, 1898; 2 ed., 3:50, fig. 3446, 1913. — 

 Stevens, Amer. Journ. Bot., 3:185, figs. 3-4, 1916. 



C. decora Engelmann, Trans. Acad. Sci. St. Louis, 1:501, 1859. 



Epithymum indecorum (Choisy) Xieuwland & Lunell, Amer. Mid. Nat., 4:511, 1916. 



Stems medium to coarse. Flowers 2-5 mm. long, whitish, fleshy, 

 papillose to smoothish, on pedicels shorter or longer than the flowers, 

 stigmas and anthers commonly purplish colored; calyx lobes triangular to 

 lanceolate, acute or somewhat obtuse; corolla campanulate; lobes erect to 

 spreading, triangular, acute, the tips inflexed; scales as long as or longer 

 than the tube, ovate or somewhat spatulate or divided, deeply fringed, 

 bridged at or below the middle; stamens shorter than the lobes; anthers 

 broad, oval, about equal to the filaments; styles as long as or slightly 

 longer than the globose, pointed ovary, unequal, becoming divaricate in 

 fruit. Capsule globose, pointed, enveloped by the withered corolla; seeds 

 about 1.7 mm. long, usually two to four in a capsule, roundish or broader 

 than long, grayish or brown, somewhat scurfy; hilum small, oval, trans- 

 verse or somewhat oblique. 



While this species is quite variable it has been difficult to maintain 



varietal segregations. The majority of the collections fall under variety 



neuropetala which shows quite wide extremes of size, shape of parts, etc. 



It has been thought best to maintain a varietal segregation as indicated 



below although in many cases it is rather difficult to tell with exactness 



to which variety a form may belong. 



Key to the varieties 



Scales not divided, ovate or spatulate. 

 Calyx lobes broad, ovate, acute. 



Flowers about 2-3 mm. long, papillose-hispid hispidula 



Flowers usually larger, not so papillose-hispid neuropetala 



Calyx lobes lanceolate, acute longiscpala 



Scales divided at the apex bifida 



