58 BOTANICAL GAZETTE. [ March, 
prairie country dotted here and there by high rounded hills. On 
the next day, after crossing through a deep ¢ gap between two pic- 
turesque bluffs, erowned with shrubbery, we left the cretaceous 
formation for the red ge Hemet sandstone. Instead of good 
grazing prairies there was poor, gravelly, rocky or sandy soils, 
all hoary with chapper sia or thickets. These thickets are 1 mostly 
formed by the following shrubs: Prosopis juliflora, Diospyros 
Texana, Colubrina Texensis, Lippia lycioides, and Opuntia lepto- 
caulis. Among other plants 1 note Astragalus Lindbeimeri, 
Cooperia pedunculata, Cereus paucispinus, Cassia pumilis, and 
Argythamnia ophioides. In nearing the Colorado the country is 
more regularly sandy, and we found Senecio ampullaceus and 
Festuca sciurea in abundat 
We crossed the Colorado the 27th. It is a deep stream, bor- 
dered on both sides by precipitous bluffs, on which I found 
Cheilanthes tomentosa and Alabamensis, and also for the first 
time the beautiful Pellea flexuosa. 
After traveling two or three miles west of the Colorado, over 
a red sandstone country, we found ourselves again ina hard lim 
stone region. Here the rains overtook us again, and we were 
compelled to pay a little more attention to the botany of that 
place. Here the little prairies were dotted with the very beauti- 
ful Phlox Reemeriana ; the streams were bordered with Mimulus 
Jamesii, var. Texensis ; while on the rocky bluffs I noticed Se- 
laginella rupestris and Rhus virens. 
On the 30th, the journey was resumed in spite of threatening 
weather We descended the San Saba valley, full of mesquit 
(Prosopis julifiora), where I bine a plant apes abundant on the 
plains of western Texas. It is an Apium proper, but not the 
same plant that was collected Kee me and distributed by Mr. Cur- 
tiss. This one must have another name, as the plant found on 
the plains is certainly the one collected by Capt. Pope. 
In a branch of San Saba river, I noticed some Schollera 
graminea in bloom. At San Saba we took the Llano road south, 
and soon afterward pitched our tent in a small valley that would 
have been a fine place for any one to stop, but to me it looked 
like a botanist’s paradise. There was a long hill all capped with 
perpendicular rocks, where were found Tinantia anomala, pe te 
4indheimeri, Bouchetia erecta, Abutilon Wrightii, Gon 
lobus_ reticulatus, and a a good many more that I have a lenis 
mentioned. Beyond this valley lay a country all intermixed wit 
sands or rocky hills, and very disagreeable to travel over. In 
the valleys the principal trees are mesquit and post oaks; on the 
hills, mountain cedars and Quereus Durandi. We finally camped 
