192 TOWNSENDIA SERICEA. SILKY TOWNSEND FLOWER. 



and expands the following spring." Dr. C. E. Parry found it in 

 1 861 in the Rocky Mountains, about the head waters of South 

 Clear Creek ; and about the same time and near the same place 

 it was found by Hall and Harbor. Mr. Brandegee has collected 

 it in southern Colorado, and as already noted it has been found 

 in the Indian Territory, if Prof Wood's T. Wilcoxiana is the 

 same thing. 



Taiviiseiidia was so named by Sir W. J. Hooker in honor 

 of David Townsend, cashier in the same bank in West Chester, 

 Pennsylvania, of which the celebrated Dr. Darlington was Presi- 

 dent, and who, though he wrote nothing, was one of the best 

 botanists of his time, and had an especial knowledge of Astera- 

 ceoiis plants. In this especially, as well as for a free distribution 

 of specimens to European botanists, they were glad in this 

 pleasant way to make acknowledgments. He died at West 

 Chester, Pennsylvania, December 6th, 1858, in his seventy- 

 first year; preceding but by a few years his life-long friend and 

 companion. Dr. Darlington, who died on the 2 2d of April, 1863, 

 in his eighty-first year — the two having rendered West Chester 

 famous in the botanical annals of America, and both beinof com- 

 memorated in distinctively American plants which bear their 

 names. 



Explanations of the Plate, i. A full-sized plant. 2. Side view showing the almost 

 globular involucre. 3. Ray floret with pappus and young achene enlarj^ed, 4. Enlarged 

 disk floret. 5. Pollen grain enlarged 270 times. 6. Side view of a branch, with side view 

 of flowers, showing its proportionate length with the leaves. 



