474 Harper : Collection of Plants in Georgia 



only one cited by Mr. A. M. Ferguson in his recent revision of the 

 genus*) is in the herbarium of Columbia University, and was col- 

 lected at Quincy, Fla., by Dr. Chapman. 



Stillingia aquatic a Chapm. 



Having noticed the extreme lightness of the wood of this 

 species, I made a determination of its specific gravity. The 

 specimen experimented with was a part of my no. 460, col- 

 lected in a pine-barren pond near Leslie, Sumter county, August 

 23. A stem about 2 cm. in diameter, showing five or six annual 

 rings, was dried with the bark on in an ordinary room for about 

 six months. A piece of it was then shaped into a rectangular 

 prism, placed in a drying oven at a temperature of 90 C. for about 

 four hours, and then carefully weighed and measured. Its specific 

 gravity was found to be .2101. Of all known woods, apparently 

 only that of Leitneria Floridana, with a specific gravity of .207 (see 



Bot Gard. 6 : 65-90. //. 30-44. 1895) sur- 

 passes it in lightness, and that by a very small margin. More 

 careful tests might perhaps even show Stillingia to be the lighter 

 of the two. 



Stillingia aqitatica presents many other interesting peculiarities 

 besides the lightness of its wood. Unlike Leitueria, it has a con- 

 siderable development of heart-wood, and no pith. It is rather 

 short-lived, the specimens at my locality seeming to die at the age 

 of seven or eight years. It has a remarkably small root-system, 

 resembling very much that of an annual plant, and is very easily 

 pulled up from the mud in which it grows. 



Mo 



Berchemia scaxdens (Hill.) Trel. 



Collected on dry partly shaded limestone rocks, at about 1050 

 ft. altitude, on the eastern slope of Pigeon Mountain, August 3 

 (no. 360). The finding of this species in such a place was rather 

 unexpected, as its usual habitat is in alluvial swamps of the coastal 

 plain. All my specimens were sterile. Bumelia lycioides, a plant 

 of similar distribution, was found by Mr. Wilson a little higher up 

 the mountain, in similar situations (no. 206). 



Rep. Mo. Bot. Gard. 12 : 57. 16 F. 1901. 



