238 Pflanzengeographie. — Aussereuropäische Floren. 
Mountains during the summer of 1820. (Trans. Amer. Phil. Soc. Philo., Voi. III [new 
serie] 1825.) (Includes many species from the plains and east of the Mississippi.) 
J. Torrey. Some account of a Collection of Plants made chiefly in the valleys of 
the Rocky Mts. or Northern Andes toward the sources of the Columbia River by Nathaniel 
B. Wyeth. (Journ. Phila. Acad. Sci., VII, 1834.) 
T. C. Porter. Catalogue of Plants collected in Wyoming and Colorado by Dr. F. 
V. Hayden and Mr. B. H. Smith 1868—1870. (U. S. Geol. Sur. Wyoming and contiguous 
Territory 1870, p. 472. Washington, 1872.) 
0. 6. Parry. A List of Plauts collected by C. Thomas in Eastern Colorado and N. E. 
New Mexico during the Survey of 1866. (Ebenda, p. 484.) 
Asa Gray. linumeration of the Species of Plants collected by Dr. C. C. Parry and 
Messrs E. Hall and J. P. Harbour, during the summer and autamn of 1862 on and near 
the Rocky Mits. in Colorado Terr., latitude 39° to 41°. (P. Philad., 1863, p. 55.) 
J. 6. Martindale. Colorado Plants. (Amer. Nat., XIII, 675, Nov. 1879.) 
Grasses of the Plains and Eastern Slope of the Rocky Mountains. (Dept. Agric. 
Rept. Washington, 1870, p. 217.) 
J. M. Coulter. A Catalogue of Plants collected in 1872 in portions of Montana, 
Idako, Wyoming and Utah. (6th Ann. Rep. U. S. Geol. Surv. Terr. [Hayden], p. 747. 
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J. Torrey. Catalogue and Description of Plants collected on Stansbury’s Fxpe- 
dition to the Great Salt Lake. (Expl. and Surv. Valley of the Great Salt Lake of Utah 
by Howard Stansbury, p. 383. Philadelphia, 1852.) 
J. Torrey. Catalogue of Plants collected on an Expedition down the Zuni and Colo- 
rado Rivers by Capt. L. Sitgreaves. (Report of Expedition, p. 155. Washington, 1854.) 
Cray, Torrey, Thurber and Engelmann. Catalogue of Plants collected during the 
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of Expedition part IV. Washington. 1861.) 
E. Durand. Description of the Species constituting the Botany of the Basin of the 
Great Salt Lake of Utah, as far as it is known. (Trans. Amer. Philos. Soc., Vol. XI, 
n. ser. 1860.) 
J. M. Coulter. A Catalogue of Plants collected in 1872 in Utah, Wyoming etc. 
{U. S. Geol. Surv. Montana, Idaho, Wyoming and Utah 1872, p. 758. Washington, 1873.) 
C. 6. Parry. Botanical Observations in Western Wyoming. (Amer. Nat., VIII, 
19 8 102, N, DU) 
$. Watson and J. T. Rothrock. Catalogue of Plants collected in the years 1871, 
1872 and 1873 with Descriptions of New Species. (Nevada, Utah, Arizona.) (U. S. Geog. 
and Geol. Expl. and Surv. West ofthe 100 th Meridian. 8%, pamphlet. Washington, 1874.) 
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Great Basin of the Territory of Utah. (Rep. of Explorations, Appendix M. Washington, 1876.) 
Thos. Kuttall. Descriptions of Plants collected by Mr. William Gamble in the Rocky 
Mountains of Upper California. (P. Philad., IV, 1848.) 
E. Durand and S. 0. Hilgard. Botanical Report on Routes in California, to connect 
with the Routes near the 35th and 32nd Paralleles, explored by Lieut. R. S. Williamson, 
in 1853. (Rep. on Exp. and Survey’s from Miss. River to Pacific Ocean. Vol. V, Part III. 
Washington, 1856 [334 Congress, 2nd Sess. Ex doc. No. 91].) 
W. P. Blake and J. Torrey. Descriptions of Plants collected along the Route and 
at Mouth of the Gila. (Rep. on Exp. and Survey’s from Miss. River to Pacific Ocean, 
Vol. V, part II, 359—370.) 
J. $S. Newberry. Botanical Report on Routes in California and Oregon, explored 
by Lieut. R. S. Wılliamson and Lieut. Henry L. Abbot, in 1855. (Comprises: Chapter I, 
Geographical Botany: Chapter II, Description of the Forest Trees of Northern California 
and Oregon.) (Expl. and Survey’s from Miss. River to Pacific Ocean, Vol. IV, part III, 
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J. $S. Newberry, A. Gray and J. Torrey. General Catalogue of the Plants collected 
