124 MISSOURI BOTANICAL GARDEN. 
Mr. Lindheimer, it appears, began collecting and studying 
the flora of Texas immediately upon his arrival there in 1836, 
but it was not till about 1842, after the political conditions 
became more settled, that he collected in any quantity, and 
early in the following year Dr. George Engelmann suggested 
to Gray that they codperate with Lindheimer by naming 
and distributing his collections of Texas plants, so as to enable 
him to devote his whole time to this work and thus advance 
the cause of science in a land then almost wholly unknown 
botanically. The outcome of this undertaking was the col- 
lection of four fascicles of plants bearing the numbers 1 to 
754, and the publication of the first two parts of Plantae 
Lindheimerianae describing a part of them. Fascicle I con- 
tained 214 species collected in 18438; Fascicle II represented 
the 1844 collection with nos. 215-318; Fascicle III consisted 
of nos. 319-574 of 1845-6; and Fascicle IV, comprising nos. 
575-754, was collected in 1847-8. The specimens of the 
collection of 1849-1851, here treated, were probably intended 
to form Fascicle V. It appears that the first two fascicles 
were issued in about 20 sets, only some 9 of which were at all 
full, while Fascicle IV contained about 40 sets.* The col- 
lection of 1849-1851 contains about 650 numbers and there 
* The following appear to have been subscribers for the whole or 
part of the first four fascicles of the “‘Flora Texana Exsiccata,”’ as shown 
by Gray’s unpublished letters to Engelmann: 
Alexander, Dr.; England. Kew Gardens; England. 
Bentham, George; England. Lamson, Prof.; Kingston, Canada. 
Boissier Herbarium; Geneva. Leman. 
Braun, Alexander; Berlin. Lowell, John A.; Cambridge, Mass. 
British Museum; London. Oakes, William; Ipswich, Mass. 
Buckley, S. B.; Texas. Olney, 8. T.; Providence, R. I. 
Carey, S. T.; New York. Saunders, William; England. 
Cleaveland, Prof. P.; Brunswick, Me. Shuttleworth, R. J.; England. 
Durand, Elias. Smithsonian Institution, Washington. 
Engelmann, George; St. Louis, Mo. Stevens. 
Fielding, H. B.; England. Sullivant, Wm. L.; Columbus, O. 
Gray, Asa; Cambridge, Mass. Thurber, George. 
Greene, B. D.; Boston. Torrey, John; New York. 
Harvey, Prof.; Dublin. Webb, Barker. 
Jardin des Plantes: Paris. 
