POT TEGERE 
BOTANICAL INFORMATION. 661 
shrub bears to Juniper, they gave it the name of *Salt 
Cedar," by which it is known to Anglo-American tra- 
vellers. A few more shrubs associate with Fremontia, espe- 
pecially a Bigelovia, (63), the Chenopodiacee, Nos. 62 and 64, 
Iva axillaris, (here a low shrub), and a spiny, silvery, tomen- 
tose Senecioidea, which is very rare.* Besidesall the Cheno- 
podiacee of my collection, there grow here those of the 
Missisippi Valley, and Kochia dioica, Chenopodium rhombi- 
folium, Salsola, &c. Nearer, towards some gravelly ridges, 
appears an intermediate flora of conspicuous flowering plants, 
as Œnothera albicaulis, Calochortus, 68; Sonchus puleaki tis, 
Lygodesma, 156 ; Erigeron, 140; isdem gnaphaloides and 
Erigeron hirsutum, and some scattered dwarf azure-blue Pent- 
stemon. 
Dry saline portions of river-valleys harbour an abundance 
of Cymopterus glaucus and glomeratus, Glycyrrhiza lepidota, 
Phaca, 108; Plantago eriopoda, Castilleia occidentalis, Ferula 
n. 220; Pentetcnan gracilis, Asclepias speciosa and Cleome in- 
tegrifolia, enclosed as it were in a shrubbery of Shephardia 
and Eleagnus ; or of Rosa parvifolia and Amorpha frutescens. 
Wet saline river-valleys abound with a herbaceous variety 
of Iva axillaris, the showy Dodecatheon integrifolium, Iris 
Missuriensis, Triglochin maritimum, the Cichoracea, n. 245, 
but most of all, Carex, n. 48. ! 
Stony exsiccated river-valley swamps are waving with an 
abundance of Hordeum jubatum, mixed with Trichopodium 
laxum, Beckmannia, Ceratochloa and the scattered tall Cala- 
magrostides, cinnoides and Mezicana, rarely are Alopecurus and 
Poa distans found amongst them. The rest of the ground is 
occupied by Calliopsis bicolor, Ranunculus Cymbalaria, Pursh, 
Epilobium coloratum and Herpestes rotundifolia. On the 
stony loamy and sandy margins grow Darlingtonia, Pola- 
nisia, Dalea alopecuroides, Xanthium, Lycopus, Amb = B 
symbrium canescens, &c. &c. 
Many small exsiccated places in — i 
* A specimen in the collection of Sir William Hooker only! the S, Nut- 
a tali? T. and G, 
