or somewhat cylindrical tube, ovate-lanceolate, sometimes granulate, acute to 

 acuminate, upright or sometimes spreading, the edges frequently uneven, more 

 or less overlapping; scales narrow, oblong, shorter than the tube, fringed with 

 short processes, closely attached to the tube for nearly their entire length, bridged 

 below the middle; filaments subulate and about equal to or shorter than the 

 oval anthers; stvles slender or slightly subulate, shorter than or about equaling 

 the globose pointed ovary; capsule globose, pointed, usually 1 -seeded, surrounded 

 or capped by the withered corolla. 



Ariz. (Pinal and Pima cos.); B.C. to Calif., Ut., Ariz, and (?) Mex. On 

 Atriplex, AUenrolfea, Cressa, Suaeda, Salicornia, Salsola and Nitrophila. 



10. Cuscuta Corj'li Engelm. Hazel dodder. Fig. 641. 



Flowers fleshy, papillate, 1.5-2 mm. long from base to corolla sinuses, mostly 

 4-merous, with pedicels shorter or longer than the flowers, in cymose-paniculate 

 clusters, sometimes the flowers originate endogenously in the region of the 

 haustoria and form dense glomerate clusters about the stem of the host; calyx 

 lobes about as long as the corolla tube, triangular-ovate, scarcely overlapping at 

 base; corolla lobes about as long as the tube, triangular-ovate to lanceolate, 

 upright, the acute tips inflexed; scales mostly reduced to toothed wings on either 

 side of the filament attachment, rarely free and bifid or toothed; styles slightly 

 subulate, mostly about as long as the ovary, becoming divergent in fruit; capsule 

 globose, enveloped by the withered corolla, the interstylar aperture rather large 

 and thickened. 



From Mont, and Ariz. (Coconino Co.), eastw.; parasitic on a large variety of 

 herbaceous and woody hosts including species of Salix, Carya, Rhus, Callicarpa, 

 Stachys, Symphoricarpos, Solidago, Aster and Helianthus. 



11. Cuscuta indecora Choisy var. indecora. Pretty dodder. Fig. 641. 



Flowers variable in size, to 3 mm. long from base to corolla sinuses, white, 

 fleshy, smooth or mostly granulate to papillate-hispid, with pedicels commonly 

 about as long as or shorter than the flowers or infrequently longer, in loose or 

 rather dense paniculately cymose clusters; calyx lobes mostly shorter than the 

 tube, triangular-ovate, slightly overlapping at base, acute to obtuish; corolla lobes 

 shorter than the tube, upright to spreading, triangular-ovate, inflexed at the acute 

 tip; scales reaching the filaments, oblong to subspatulate, abundantly fringed; 

 styles slender or slightly subulate, about as long as the ovary, capsule depressed- 

 globose, thickened about the interstylar aperture, surrounded by the withered 

 corolla which is eventually split by the enlarging capsule. 



Throughout Tex., Okla. (Comanche Co.) and Ariz. (Coconino, Yavapai, 

 Graham, Gila, Maricopa, Pinal and Pima cos.); abundant in the s. states from 

 Fla. to Calif., n. through the cen. states to Minn., Mich, and S.D., also in n. Mex., 

 the W.I. and S.A.; parasitic on a wide range of herbaceous and woody hosts in- 

 cluding species of Polygonum, Clematis, Sesbania, Cissus, Cepludanthus, Vernonia, 

 Aster, Baccharis, Iva, Pluchea, Borrichia, Helianthus, Helenium, Campanula and 

 Eryngium. 



The size of the flowers, length of the pedicels and the proportionate size of the 

 calyx vary greatly, sometimes even on the same specimen. Most of the flowers 

 are more or less granulate because of the lenticular outer surface of the cells and 

 occasional specimens are papillate-hispid. 



Var. longisepala Yunck. This variety has the characteristics of the var. indecora 

 with the exception of the calyx lobes that are lanceolate and mostly longer than 

 the corolla tube. 



1367 



