788 BIOGKAPHICAL MEMOIRS. 



1R54. 



On the age of the large tree receutly felled in California. Am. J. Sci., II, xvii, 

 440-44:J. 



Note on the genus Bnckleya. Am. -J. Sci., II, xviii, 'J8-100. 



Plant;!' Nova- Thnrberianie. The characters of some New Genera ami Species of 

 Plants in a Collection made by George Thurbcr, Esc)., of the late Mexican Boundary 

 Connnis.sion, chiefly in New Mexico and Sonora. Mem. Am. Acad., u. s., v, 297-328. 



On the Affinities of the Genus Vaviea, Benth. ; also of Rhytidaudra, Gray. Mem. 

 Au). Acad., n. s., v, 32t»-:i:{6. [Hook. Jour. Bot., vii, 189-190.] 



United States Exploring Expedition, during the years 1838, 1839, 1840, 1841, 1842, 

 under the command of Charles Wilkes, U. S. N. Vol. xv. Botany. Phanerogamia. 

 With a folio Atlas of one hundred plates. Part I. Philadelphia, 1854. 4to, pp. 775. 



Mammoth Trees of California. Am. J. Sci., II, xviii, 286-287. 



1855. 



The Smithsonian Institution. Am. J. Sci., II, XX, 1-21. 



Botanical Report, by John Torrey and Asa Gray, upon the Collections made by 

 Captain Gunnison, Topographical Engineers, in 1853, and by Lieutenant E. G. 

 Beckwith, Third Artillery, in 1854. Pacific R. R. Surveys, ii, 115-132, with ten 

 plates. 



Report on the Botany of the Expedition [under Captain John Pope], by John 

 Torrey and Asa Gray. Pacific R. R. Surveys, ii, 157-178, with ten plates. 



Note on the Development and Structure of the Integuments of the Seed of Mag- 

 nolia. Hook. Jour. Bot., vii, 243-245; viii, 26. 



1856. 



A Manu.il of the Botany of the Northern United St:.''\s: Second edition; includ- 

 ing Virginia, Kentucky, and all east of the Mississippi; arranged according to the 

 Natural System. (The Mosses and Liverworts by Wm. S. Sullivant.) With fourteen 

 plates, illustrating the genera of the Cryptogamia. New York, 1856. 8vo, pp. xxiii, 

 739. 



Note on Obolaria virginica L,, Jour. Linn. Soc, i, 129-130. 



For what purpose were plants created? (Addressed to Prof. Dana). Am. J. Sci., 

 II, XXI, 428, 429. 



Statistics of the Flora of the Northern United States. Am. J. Sci., II, xxii, 204- 

 232; XXIII, 62-84, 369-403. 



Wild Potatoes in New Mexico and Western Texas. Am. J. Sci., II, xxii, 284, 285. 



1857. 



Centrostegia. Pacific R. R. Surveys, vii (Botany), 19. 



List of Dried Plants collected in Japan, by S. Wells Williams, esq., and Dr. 

 James Morrow. Narrative of the Expedition of au American Squadron to the 

 China Seas and Japan, performed in the years 1852, 1853, and 1854, under the com- 

 mand of Commodore M. C. Perry, ii, 303-329. 



Report of the Botany of the Expedition [under Lieutenant A. W. Whipple]. (By 

 John Torrey. The Composite. I'lantaginace;e, Orobanchacea^, Scrophulariacete, and 

 Bignoniaceae, by Asa Gray). Pacific R. R. Surveys, iv, 9.5-115, 117-122, with eight 

 plates. 



tJeneral Catalogue of the IMants collected on the expedition [under Lieut. R. S. 

 Williamson and Lieut. II. L. Al)bot]. (By J. S. Newberry. Ivcsia, Compositai, 

 Hcmitonies (and Monotrojie.-e), Scrophulariacea', Hyilrophyllacea-, and Gentianacese, 

 by Asa Gray). Pacific R. R. Surveys, vi, 72, 7;*>, 76-87, with six plates. 



