108 SILVA OF NORTH AMERICA. RUBIACER, 
lunate-orbicular wing. Embryo elongated, immersed in the thick fleshy albumen ; cotyledons ovate- 
oblong, foliaceous, larger than the terete erect radicle turned towards the hilum. 
The wood of Pinckneya is close-grained, although soft and weak, and contains obscure remote 
medullary rays and bands of four to six rows of large open ducts marking the layers of annual growth; 
it is brown, with lighter colored sapwood composed of eight or ten layers of annual growth. The 
specific gravity of the absolutely dry wood is 0.5350, a cubic foot weighing 33.34 pounds. The bark 
has been used successfully in the treatment of intermittent fevers.’ 
It is supposed that Pinckneya was discovered by John Bartram,’ as specimens of this tree are said 
to have been found in the herbarium of the younger Linneus ;* the earliest printed account of it 
appears in the Zravels* of his son, William Bartram, published in 1791. It was first brought into 
general notice, however, by the French botanist Michaux, who found it on the banks of the St. Mary’s 
River in Florida or Georgia in 1791.° 
The generic name commemorates the scientific accomplishments of Charles Cotesworth Pinckney of 
South Carolina, the Revolutionary patriot and general, who, after the liberty of the United States had 
been established, devoted himself to the study of botany and chemistry. The genus is represented by 
a single species. 
1 Rafinesque, Med. Fi. ii. 57, t. 72.— Lindley, Fl. Med. 433. — 3 See i. 8. 
Griffith, Med. Bot. 365, £. 174.— Porcher, Resources of Southern 8 W. P. C. Barton, Fl. N. Am. i. 27, 
Fields and Forests, 404. — Naudain, Am. Jour. Pharm. April, 4 16, 468. 
1885. — U. S. Dispens. ed. 16, 1894. 5 Michaux f. Hist. Arb. Am. ii. 276. 
