BOTANY. 



151 



\'. 



Coll. A common species on tlie upper Arkansas. The specific name of Pursli is inappropriate, 

 for the Iiairyness is rusty-colored, and not silvery. Perhaps E. holocericeus is not distinct. 



DicnoNDRA HEPENS, FoTsf . Gcu, p. 39, t. 20 ; Choisij^ h c.p. 451, Var. Cauolinensis, Choisy^ I. c. 

 D. Carolinensis, Miclix. FL Ij p. 36. Rock Creek and Copper Mines^ May — July; Bigeloio. 

 Santa Cruz Mountains, Sonora ; Thurher. The leaves are commonly larger than in the plant 



of the southeastern States. 



DiCHOXDKA ARGENTEA, Willd. Euiim. Hort. Bev. p. 297; Clioisy^ I. c. Rocky hills on the Rio 

 Grande, below El Paso, June — August; Parry, Bigeloio. Chihuahua; Thurher. {Wright, 



No. 1621.) 



Cressa Cretica, Linn. Var, Truxillensis, CJioisyy L c. p, 440. C. Truxillensis, H. B. K. 



Nov. Gen. & Sp. 3,^. 119. Low and sandy places, Laguna de Lache, Solado, Mexico, April ; 

 Bigeloio. On the Gila, Sonora, June ; Thurher. (No. 1018, Wright.) Saline soils, San Diego, 

 California ; Parry. Bolson de Mapini, Mexico ; Gregg. Differs from our European specimens 

 of C. Cretica, in being more upright, vrith considerably larger leaves and flowers, and in the 

 linear-oblong (not roundish-ovate) anthers. The fruit, too, is mostly one-seeded. Still we 



follow Choisy, in regarding it as but a variety C. Cretica. 



CuscuTA. Dr. Engelmann, of St. Louis, has long been occupied in preparing a monograph 

 of this genus, which will be published on his return from Europe. Although I have his 

 determinations of a large proportion of the species collected in the Mexican Boundary Survey, 

 I think it better to wait until his monograph appears, and thus to have the advantages of his 

 latest researches, rather than publish my own observations on this difficult genus. 



SOLANACEAE. 



N. York. 2,1^.227 



>S', 



On the upper Rio Grande ; west to the Copper Mines of New Mexico and the Zuni 

 Mountains. Rocky places, Puerto de Paysano. Tuber about the size of a marble. The 

 specimens collected by Dr. James, in Long's Exp»edition, were imperfect and erroneously described 

 as annual. 



SoLANUM Fendleri, Gray, I. c. Near the Copper Mines, New Mexico ; Bigelow. Near S. 

 tuberosum, but differs in the segments of the leaves being nearly uniform in size ; usually the 

 lowest pair only being very small. The tubers, in the wild plant, are seldom more than half 

 an inch in diameter, 



SoLANCM TRiFLORUM, Ntitt. Gcu. 1, p. 128. Ou the upper Rio Grande. (No. 675 Fendl. PL 

 N. Mex.) This is more common on the tributaries of the Red, Arkansas, and Missouri rivers, 



SoLANUM NODIFLORUM, Jacq. Ic. Bar, 2, t. 326, ex Dunal in 1)0. Prodr. 13, pars l,p, 46. 

 Western Texas and on the Rio Grande from the mouth of the Limpio downward, June — July. 

 (No. 624, 892 and 1904, B erlandier ,') Perhaps only a variety of S. nigrum; and S. crenato- 

 dentatum, DunoX, I. c. (at least the plant of Berlandier) is probably only another form of the 



same 



SoLAKTii DouGLAsn, JDunal, I. c. Moist places, San Luis Rey, California ; Parry, Plant 8-10 

 feet high ; flowers bright blue. Dr. Parry says that the stem is somewhat woody at the base 

 and that the berries are eaten by children ; but it has very much the appearance of the last 

 species. 



27 



S. Californicum, Dimal, I. c. p. 86. S. geaistoides^ Dunal, I. o. p. 85. S. Menziesii Dunal 

 i* c. p. 159, In California; Parry. In most parts of California; but more common near the 





U_— ^. I 



