ТНЕ 
SPECIES OF DALBERGIA 
ОЕ 
SOUTH-EASTERN ASIA. 
L—INTRODUCTION. 
$ 1. Historical Review of the Delimitation of the genus Dalbergia. 
Tur name Dalbergia was proposed іп 1781 by the younger Linneus,* in memory 
of Charles Gustavus and of Nicholas Dalberg, two Swedish botanists connected with 
Surinam, in order to accommodate two species, one a tree from Ceylon which he 
named D. lanceolaria, the other a shrub from Surinam, which he termed D. Monetaria.. 
Lamarck in 17907 dealt with the same two species, taking however the opportunity 
of invalidating the genus by adding, as a variety of D, lanceolaria, a plant figured 
by Rheede іп 1686, for which in 1763 Adanson§ had proposed the generic name 
бойо. The effects of this error have been far-reaching, and have been perpetuated 
in works so authoritative and so recent as the Index Kewensis of Hooker and Jackson, 
and as the Revisio of Dr. О. Kuntze. ` 
To the genus in 1798 Roxburgh| added three new species, D. latifolia, D. pani- 
culata, and Р, rubiginosa ; all Indian, and all species that have stood the test of 
further examination, whether as regards their generic position or their specific rank. 
Willdenow, who іп 1800 again took the genus in hand, added two more species to 
those of Linnseus and Roxburgh. His two additions were, however, somewhat unfor- 
tunate; one of them, D. heterophyila, is in reality Derris uliginosa; the other, D, arborea, 
is the tree on which Adanson in 1763** had based his genus Pongam, a name 
modified by Lamarck іп 179777 to Pungamia and by Ventenaf іп 1803$} to Pongamia ; 
the last-mentioned name is that now generally employed to designate it. When 
in 1806 Persoon§§ collated the species known to him, he corrected the latter error; 
the former, however, escaped his notice, and it happens that he deals with the 
same species in two different places, naming it in опе Dalbergia heterophylla, in 
the other Derris triphylla. 'l'wo more species were added in the Synopsis; these are 
quite as unfortunate as the additions made by Willdenow; one of them, D. domin- 
gensis, is really а Lonchocarpus; the other, D. Diphaca, is an Ormocarpum. The most 
important feature of Persoon's digest is the transfer there, by Richard, of D. Monetaria 
to the genus Lcastaphyllum. Poiret, dealing with the genus іп 1811, speaks of the 
, “* Supplementum Plantarum 52, 316. «| Species Plantarum iii. 2, 900. 
+ Dict. Епеуе. Meth. ii. 255. ** Fam. Рі. ii. 322. 
£ Hort. Malabar. vi. t. 28. tt Ilustr. t. ea 
8 Fam. РЇ. vi. 327. tt Jard. Malmais. t. 28. 
|| Coromand. Pi. ii. 7, 8, 9, tt. 118, 114, 116. 55 Synops. ii. 276. 
Axx. Roy. Вот. Garp. CALCUTTA, Vor. X. 
