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BOTANY. 151 
Coll. A common species on the upper Arkansas. The specific name of Pursh is inappropriate, 
for the hairyness is rusty-colored, and not silvery. Perhaps E. holocericeus is not distinct. 
DicHONDRA REPENS, Forst. Gen. p. 39,1. 20: Choisy, L. с. p. 451. Var. CAROLINENSIS, Choisy, l. с, 
D. Carolinensis, Michx. Fl. 1, p. 36. Rock Creek and Copper Mines, May—July ; Bigelow. 
Santa Cruz Mountains, Sonora; Thurber. The leaves are commonly larger than in the plant 
of the southeastern States. | 
DICHONDRA ARGENTEA, Willd. Enum. Hort. Ber. p. 297; Choisy,l. c. Rocky hills on the Rio 
Grande, below El Paso, June—August; Parry, Bigelow, Chihuahua; Thurber. (Wright, 
No. 1621.) 
CRESSA CRETICA, Linn. Var. TRUXILLENSIS, Choisy, l. c. р. 440. C. Truxillensis, Л, В. K. 
Nov. беп. & Sp. 3, p. 119. Low and sandy places, Laguna de Lache, Solado, Mexico, April ; 
Bigelow. On the Gila, Sonora, June; Thurber, (No. 1618, Wright.) Saline soils, San Diego, 
California; Parry. Bolson de маны Mexico; Gregg. Differs from our European specimens 
of ©. Cretica, in being more upright, with 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. 
Ссвсота. 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. 
Ѕоглхом Jamesi, Torr. in Ann. Гус. N. York, 2, p. 227. Gray, in Sill. Jour. n. ser. 22, p. 284 ; 
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. J ames, in Long’s Expedition, were imperfect and erroneously described 
as annual. 
SoraNUM FENDLERI, Gray, l. c. Near the Copper Mines, New Mexico; Bigelow. Near 5. 
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. 
SOLANUM TRIFLORUM, Nutt. Gen. 1, p. 128. On the upper Rio Grande. (No. 679 Fendl. РІ. 
N. Mex.) This is more common on the tributaries of the Red, Arkansas, and Missouri rivers. 
SOLANUM NODIFLORUM, Jacq. Ic. Rar. 2, t. 326, ex Dunal in DC. Prodr. 13, pars 1, р. 46. 
Western Texas and on the Rio Grande from the mouth of the Limpio downward, June—J шу. 
(No. 524, 892 and 1904, Berlandier.) Perhaps only a variety of S. nigrum; and 8, crenato- 
dentatum, Dunal, l. c. (at least the plant of Berlandier) is probably only another form of the 
same species. 
SonAxvuM Dovernasi, Dunal, 1. с. Moist places, San Luis Rey, California; Parry. Plant 8-10 
feet high ; flowers bright blue. Dr. Parry says that the stem is бекіткіші woody at the base, 
and that the berries are eaten by children; but it has very much the appearance of the last 
species. 
SoLanuM UMBELLIFERUM, Esch, in Мет. St. Petersb. 10, р. 280, Torr. in Whipp. Rep. p. 127. 
8. Californieum, Dunal, 1. c. p. 86. S. genistoides, Dunal, 1. e. p. 85. 8. Menziesii, Dunol, 
l. c. p. 159. In California; Parry. Ia most parts of California; but more common near the 
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