394 CUSCUTACEAE 



shorter than the lobes ; anthers broadly oval, about as long as the filaments ; scales equaling or 



exceeding the corolla-tube, prominently fringed ; styles slender, exserted ; stigmas capitate ; ovary 



globose but capped by a rather prominent stylopodium ; capsule globose, thickened at the top by 



the stylopodium, surrounded by the withered corolla. 



Usually in low moist ground, parasitic on various plants but most frequent on introduced weeds and 

 alfalfa, Sonoran Zones; central and southern California including the deserts, east to Utah and Southern 

 States; Texas south to Mexico, South America, and West Indies. Type locality: "Texas, in wet prairies near 

 Houston." July-Nov. 



11. Cuscuta subinclusa Dur. & Hilg. Canyon Dodder. Fig. 3881. 



Cuscuta Ceanothi Behr, Proc. Calif. Acad. 1: 16. 1854. 



Cuscuta subinclusa Dur. & Hilg. Journ. Acad. Phila. II. 3: 42. 1855. 



Stems medium coarse, somewhat fleshy. Flowers 5-merous, usually 5-6 mm. long, rarely 

 shorter, sessile or short-pedicelled, in small clusters, these scattered or crowded in large masses ; 

 calyx usually about half the length of the corolla, lobes ovate to lanceolate, acute, overlapping 

 below ; corolla cylindric, lobes erect or spreading, much shorter than the tube, ovate, acute, the 

 edges crenulate, fringed all around ; anthers oblong, sessile or subsessile ; styles slender, longer 

 than the ovary, with a collar-like thickening around the intrastylar aperture, capped by the 

 withered corolla. 



Parasitic on various native plants especially shrubs and small trees, Sonoran and Transition Zones; 

 southern Oregon on both sides of the Cascade Mountains to Lower California, Mexico. Type locality: Tejon 

 Pass, Tehachapi Mountains, California. June-Oct. 



12. Cuscuta Suksdorfii Yuncker. Alpine Dodder. Fig. 3882. 



Cuscuta salina var. acuminata Yuncker, Univ. 111. Biol. Monogr. 6: 162. figs. 32 f-g, 89. 1921. 

 Cuscuta Suksdorfii Yuncker, Mem. Torrey Club 18: 167. fig. 41. 1932. 



Stems slender, pale yellow or straw-colored. Flowers short-pedicelled or the pedicels some- 

 times as long or longer than the flowers, in few-flowered umbellate clusters ; calyx-lobes ovate 

 below, attenuate above, the elongated tips extending to the middle of the corolla-lobes ; corolla- 

 lobes erect, triangular at base, lanceolate-attenuate above, longer than the short-campanulate 

 tube ; stamens much shorter than the lobes, filaments subulate, a little longer than the oval 

 anthers ; scales oblong, represented by 2 shallowly dentate wings ; stigma capitate ; styles much 

 shorter than the broadly conic ovary; capsule ovoid-conic, glandular; seeds 2-4, globose, about 

 1 mm. in diameter. 



Mountain meadows. Boreal Zones; parasitic on various herbs, especially composites; Cascade Mountains, 

 Skamania County, Washington, to the Sierra Nevada, Tulare County, California. Type locality: on an island 

 of a mountain lake, Skamania County, Washington, parasitic on Aster. July-Sept. 



13. Cuscuta salina Engelm. Salt-marsh or Alkali Dodder. Fig. 3883. 



Cuscuta salina Engelm. in Hot. Calif. 1: 536. 1876. 



Cuscuta californicA var. squamigera Engelm. Trans. St. Louis Acad. 1 : 499. 1859. 



Cuscuta squamigera Piper, Contr. U.S. Nat. Herb. 11: 455. 1906. 



Cuscuta salina var. squamigera Yuncker, Univ. 111. Biol. Monogr. 6: 161. 1921. 



Stems reddish orange, slender. Flowers 5-merous, 2-3 mm. long, short-pedicelled, in cymose 

 clusters ; calyx-lobes ovate-lanceolate, acute or acuminate, about as long as the campanulate or 

 cylindric corolla-tube ; corolla-lobes ovate-lanceolate, about equaling the tube, acute to acuminate, 

 erect or sometimes spreading ; scales narrowly oblong, closely attached to the tube almost to 

 the apex, fringed with short processes ; anthers oval, equaling or slightly longer than the short 

 subulate filaments ; styles slender, shorter than the ovoid ovary ; capsule broadly ovoid, pointed 

 at the apex, capped by the withered corolla ; seed usually solitary, globose-ovoid. 



Parasitic on various saline plants, as Cressa, Frankenia, Suaeda, Nitropkila, Salicornia, Transition and 

 Sonoran Zones; British Columbia south along the coast to southern California, east to Arizona and southern 

 Utah. Type locality: parasitic on Suaeda, saline soil along the Virgin River, Utah. May-Sept. 



Cuscuta salina var. major Yuncker, Univ. 111. Biol. Monogr. 6: 161. figs. 32 a-e, 121, 140. 1921. Flowers 

 larger, 3-4.5 mm. long; corolla-lobes broadly ovate, acute, overlapping; scales with fewer teeth on the mar- 

 gins. Common on Salicornia along the coast of central California, apparently less so in Oregon, Washington, 

 and southern California. Type locality: Palo Alto, Santa Clara County, California. 



14. Cuscuta denticulata Engelm. Desert or Toothed Dodder. Fig. 3884. 



Cuscuta denticulata Engelm. Amer. Nat. 9: 348. 1875. 



Stems very slender, pale yellow. Flowers 2-2.5 mm. long, scattered, either solitary or in 

 few-flowered clusters, short-pedicelled, subtended by 1-3 ovate-lanceolate bracts ; calyx-lobes 

 orbicular, concave, overlapping, as long as the corolla-tube and concealing it, denticulate ; corolla 

 campanulate, becoming urceolate in age, corolla-lobes oval or ovate, obtuse, about as long as 

 the tube, somewhat spreading ; scales broadly oblong, denticulate ; anthers oval, about equaling 

 the short filament ; styles shorter than the ovoid ovary; stigmas capitate; capsule ovoid, capped 

 by the withered corolla ; seeds usually solitary, globose-ovoid. 



Parasitic on various desert shrubs. Lower Sonoran Zone; Inyo County and western rim of the Mojave 

 Desert, and northern rim of the Colorado Desert. California, east to Nevada and southern Utah. Type lo- 

 cality: St. George, Utah. June-Oct. 



