1918] FREEMAN—HYACINTH BEAN 523 
ing his plant (described in Select. Stirp. Amer. Hist. 1763, p. 205) 
to D. lignosus L. by calling this plant D. J ‘acguint. To emphasize 
the justice of this disposition of the 2 species by DECANDOLLE, the 
original description furnished by JAcQuIN may be quoted as follows: 
Planta perennis, volubilis, tota pilosa; praecipue vero rami inferiores 
lignosi, and legumina, pilis hispida sunt. Foliola sunt ovata, acuta, scabrius- 
cula, duos pollices longa, lateralibus interne obliteratis. Stipulae ex lanceolato 
Ovatae, acuminatae, basi emarginatae. Pedunculi umbellati, foliis breviores, 
pauciflori. Flores albidi. Legumina tres quatuorve pollices longa, acuminata, 
interne nivea. Semina circiter rere nitida, atra cum hilo albido, parva, 
compressiuscula, ex oblongo reniformi 
abitat in Caribaearum iecade: 
It would be difficult to harmonize this description with that of 
either SmirH (Spic. Bot. no. 2, p. 19) or LinnaEus (Hort. Cliff. 
360. t. 20). We must couclane. therefore, with DECANDOLLE, that 
it is a distinct species and follow him in calling it D. Jacquini DC. 
Prod. 2:397. 
In the opinion of the writer, the evidence presented herewith 
is sufficient to show that the plants described as D. lignosus by 
LinnaEvs (Sp. Plant. ed. 1, 1753, p. 726), and more fully in his 
earlier work (Hort. Cliff. 360. t. 20. ian by J. E. Smaru (Spic. 
Bot. no. 2, p. 19, pl. 21. 1792), by Curtis (Bot. Mag. 11:380. 
1797), and the plant now grown in various parts of the world as 
D. lignosus and shown in fig. 7 are all one and the same species, 
which is distinct from D. Lablab L. We are therefore unable to 
follow either Jackson (Index Kewensis 1895) in making D. lignosus 
L. a synonym of D. Lablab L; Pratn (Jour. Asiatic Soc. Bengal 
667: 429-430. 1897) in reversing the incidence of the original 
Linnaean names by making D. Labdlab L. refer to the perennial 
species and D. lignosus L. to the annual hyacinth bean; or PIPER 
(U.S. Dept. Bull. Agr. 318. 1915, p. 5), in assigning the plant 
commonly grown as D. lignosus L. to D. Jacquini DC. On the 
other hand, we must hold to the original Linnaean designation of 
the common annual (frequently perennial in tropical countries) 
hyacinth bean (and its many varieties, fig. 2) as D. Lablab L., 
and the more slender perennial greenhouse (in northern climates) 
climber shown in fig. 7 as D. lignosus L. 
: AGRICULTURAL EXPERIMENT STATION 
U; SITY OF ARIZONA 
