. Reports of explorations and surveys, to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean . Surveys, 32dParallel • — ■ BOTANY. Plate BOTANY. 169 Pentstemon pubescens, Soland.; DC. Prodr. 10, p. 327. Western Texas ; purpurea, Don; DC. Prodr. 1(3, p. 531. Llano Estacado and Western Texas;March, April. VEBBENACEJ3. Verbena bipinnatifida, Engelm. and Gray, PI. Lindh. 1, p. 49 ; Schauer, in DC. Prodr. 11,p. 553. Glandularia bipinnatifida, Nutt. Delaware creek to the Colorado ; March,


. Reports of explorations and surveys, to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean . Surveys, 32dParallel • — ■ BOTANY. Plate BOTANY. 169 Pentstemon pubescens, Soland.; DC. Prodr. 10, p. 327. Western Texas ; purpurea, Don; DC. Prodr. 1(3, p. 531. Llano Estacado and Western Texas;March, April. VEBBENACEJ3. Verbena bipinnatifida, Engelm. and Gray, PI. Lindh. 1, p. 49 ; Schauer, in DC. Prodr. 11,p. 553. Glandularia bipinnatifida, Nutt. Delaware creek to the Colorado ; March, Aubletia, Linn. Upper Texas, &c.; April. Verbena bracteosa, Michx. Fl. 2, p. 14. On the Pecos and Llano Estacado; officinalis, Linn. V. spuria, Linn., etc. Western Texas ; April, May. LABIATE. Salvia farinosa, Benth. Lab. p. 274. On the Colorado ; April. Probably not distinct fromS. Pitcheri, Torr. Salviastrum Texanum, Scheele, in Linnaza. 22, p. 584. (Plate VI.) Gravelly soils, Llano Es-tacado ; April. A common plant in Texas and New Mexico. Scutellaria resinosa, Torr. in Ann. Lyo. New York, 2, p. 232. On the Pecos and the head-waters of the Colorado ; April. Teucrium Canadense, Linn.; Benth.


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