r 8 r 
Greshoff in 1890 (13) isolated from the seed of Pachyrhizus ang^ulatus 
Rich, a substance which he called pachyrhizid. This substance was stated 
by Greshoff and by Van Sillevoldt (46) to be similar to derrid, isolated 
from De.rris elliptica by Greshoff and now known to have been very impure 
rotenone. Hanriot (18) stated that pachyrhizid and derrid were similar 
but not identical. Kariyone and Atsumi (26) compared the properties of 
pachyrhizid with those of rotenone. However, none of these investigators 
stated that the substances were identical, and hence it cannot be definitely 
concluded that P. angu latus contains rotenone. In view of the recent finding 
of rotenoids in a related species, P. erosus (19a), it is possible that 
Greshoff 's plant material did contain rotenone. 
In table 3 are listed plants, of which the common names only are 
available, reported to contain rotenone or rotenoids. The first three are 
definitely legumes. "Timbo vermelho" is the Leguminosae sp. of Krukoff and 
Smith (30) . They state that this plant is not a Lonchocarpus , Derris , 
Teph rosia , or Ormocarpum . No statement can be made as to the "Sopilote" 
or "Lai-Tung." In the case of the former only chips of wood were available. 
In the latter case the only literature source available gives no clue as to 
the identity of the plant. It is realized that there may be some duplication 
between the plants in table 3 and those in the two previous tables. 
Table 3. — List of plants, of which only common names are available, 
reported to contain rotenone or rotenoids 
N ame Source 
'Timbo vermelho" Brazil 
"Timbo melancia" 
Reference to presence of rotenone 
or rotenoids 
roots 
Compounds 
related to 
Rotenone rotenone 
(30)' 
Color 
test 
'Berberra" 
(Millettia ferruginea 
Hochst.?) Ethiopia 
"La Meh" 
"Lai-Tung" 
"Sopilote" 
Southern 
China 
China 
Honduras 
(seeds 
(roots 
seeds 
chips of 
wood 
(52) 
(52) 
(31) 
(31) 
(52) 
(52) 
