Langeron gives a map of the geographical distribution 
of the genus Aleurites. One error, which was not his 
fault, is to be noted. A.moluccana is indicated as occur¬ 
ring in Lower California. The basis of this error is a spec¬ 
imen in the Berlin Herbarium collected by Deppe sup¬ 
posedly in California. Pax cited the same collection in 
Engler Pflanzenreich IV. 147 (Heft 42) (1910) 181. As 
noted by I. M. Johnston (in Contrib. Gray Herb. 68 
(1923) 88) A.moluccana does not occur in either Upper or 
Lower California but is common in Hawaii which is the 
probable source of Deppe’s specimen. A parallel case is 
that of Euphorbia Deppeana Boissier. The type, which 
I have examined, purports to have come from California 
but is a member of the Hawaiian subsection Gymnadeni- 
ae. Since no further collections of this species have 
appeared from Lower California, it seems fairly well 
demonstrated that the data were erroneous on some of 
Deppe’s specimens. 
BIBLIOGRAPHY 
Hemsley, W. B. 1906. Revision of the synonymy of the species of 
Aleurites. Kew Bull. 1906: 119-121. 
-. 1914. The wood-oil trees of China and Japan. Kew Bull. 1914: 
1-4. 
Langeron, Maurice. 1902. Le genre Aleurites Forst. (Euphorbia- 
cees), systematique—anatomie—pharmacologie. 160 pp., 52 figs. 
Paris. L. Boyer. 
Muller, J. (Arg.) 1866. Aleurites in DC. Prodr. 15, pt. 2: 722-724. 
Pax, F. 1910. Aleurites in Euphorbiaceae—Jatropheae in Engler 
Pflanzenreich IV. 147 (Heft 42) : 128-138. 
-, & K. Hoffmann. 1919. Aleurites in Euphorbiaceae—Addita- 
mentum VI in Engler Pflanzenreich IV. 147 (14) : 8. 
-,-. 1981. Aleurites in Engler & Prantl, Nat. Pflanzen- 
familien, 2 Aufl., 19c: 99-100. 
Wilson, Ernest H. 1918. The ** Wood-oil ” trees of China and Japan. 
Bull. Imp. Inst. 11: 441-461. 
Gray Herbarium, Harvard University 
Cambridge, Mass. 
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