3 SILVA OF NORTH AMERICA. 
LEGUMINOS. 
None of the species is known to possess properties useful to man, although several are cultivated 
for the beauty of their flowers.’ 
The genus was dedicated by Linnzus” to Dr. Samuel Dale,’ an English botanist and writer on 
the materia medica. 
to find an arborescent Dalea in this region have proved unsuc- 
cessful, although this species has recently been noticed on the 
Mohave Desert growing as a low shrub. 
1 Ventenat, Jard. Cels, 40, t. 40. — Hooker, Exot. Fl. t. 43; Bot. 
Mag. t. 2486. — Nicholson, Dict. Gard. 
9 Hort. Cliff. 363, t. 22. 
8 Samuel Dale (1659-1739), an English apothecary and physi- 
cian of Boking, is best known by his Pharmacologia seu Manuductio 
ad Materiam Medicam, published in 1693. Several editions of this 
work appeared, and a supplement in 1705. It was considered in 
its time one of the most rational books that had been written on 
the subject. Dale also wrote a History of Harwich (1730), and 
between 1692 and 1736 made numerous communications to the 
Royal Society, of which he was a member, including in a letter 
to Sir Hans Sloane, Descriptions of the Moose Deer and a sort of 
Stag in Virginia, with remarks on the Flying Squirrel of America. 
He practiced his profession at Braintree in Essex for many years, 
and was the neighbor and friend of Ray, whose executor he became. 
His herbarium, bequeathed to the Apothecaries’ Company, is now 
preserved in the British Museum. 
