652 TRAVEL IN EUROPE AND AMERICA. [1875, 



I think I hinted to you that I found two Cras- 

 sulacese on Stone Mountain, both annual. 



One, most abundant on the lower slopes, is glaucous- 

 green, and has bright white flowers. The pods show 

 it to be a true Sedum. I send a small specimen. 

 Note the blunt pods and short style. This — as shown 

 by a bit of fruit in my herbarium — is Sedum pusil- 

 lum, Michx. ! 



The other is dull purple in general hue, smaller, 

 grows only well up the mountain, aboimds in a smaU 

 form on the very top, and is rather later ; but I 

 make out the dehiscence, and it is Diamorpha pusilla, 

 Nutt. ! 



The specimens you sent to me are this, larger and 

 later than any I got. But, as you directed me to the 

 base of the mountain for Diamorpha, you must have 

 got this too. Your specimens have full-grown fruit. 

 Look at them and see if the larger ones have not the 

 regular dehiscence down the side of Sedum, and let 

 me know. 



May 12, 1875. 



Thanks for your letter and the Sedum. 



Now for another find. The moment I set eyes on 

 the Arenaria of Stone Moimtain, I said, Ho ! here is 

 A. brevifolia, Nuttall, of which I had only a single 

 stalk in herbarium. Comparing now, I was right, and 

 Nuttall says his specimen is from Tatnall County 

 (which is strange, that being in southeast Georgia). 

 The question remains. Is it only a low-country form 

 of Arenaria glabra ? 



Your specimen — with fruit — and M. A. Curtis's ^ 



1 Moses Ashley Curtis, D. D., 1808-1872. Born in Charlestown, 

 Mass. ; early removed to the South ; lived near Hillsboro, N C. His 

 botanical studies were largely on Fungi. 



