[Crown Copyright Reserved. 
ROYAL BOTANIC GARDENS, KEW. 
BULLETIN 
~ MISCELLANEOUS INFORMATION. 
Nos. 2 & 3.] [1918 
VII.—_THE GENUS CHROZOPHORA. 
D. Pra. 
The Euphorbiaceous genus Chrozophora is so easily distinguish- 
able from its nearest allies as to suggest that it is a ‘natural ’ 
one. The divergence of view that has prevailed as to the limita- 
tion of its component forms has been so striking as to indicate 
that it is a ‘di It’ one. These forms, Bentham remark 
in 1880 (Gen. Plant. iii. p. 305) are ‘ inter se valde confusae non- 
nullae revidendae et forte iterum dividendae vel reducendae.’ 
In a serious attempt to supply the revision thus advocated, which 
was published by Pax and K. Hoffmann in October, 1912 
(Pflanzenr. IV. 147 vi. pp. 17-27), the species recognised have 
been said to be ‘ inter se saepe simillimae et caute examinandae.’ 
This was the experience met with when an account of the 
African species, also, as it happens, published in October, 1912 
(Fl. Trop. Afr. vi. 1, pp. 834-9), was being prepared. hile 
that study was in progress, it was found impossible to arrive at 
definite conclusions regarding some of the African forms until 
careful investigation had been made of the material available 
from Europe and Asia. This involved, in fact, the examination 
of all the specimens in a number of different herbaria, including 
those of Kew, the British Museum, the Linnean Society of 
London, Paris (including the Lamarck and Jussieu collections 
and that of M. Drake del Castillo), Brussels, Leiden, Copenhagen, 
Geneva, Berlin (including the Willdenow herbarium), and as 
regards Indian material that of Calcutta and that of Mr. J. R. 
Drummond. In this way it has been possible to see the actual 
marck, Forskal, Vahl, Willdenow, Roxburgh. : jeu, 
Bunge, Wallich, Baillon, Anderson, Dalzell, Schweinfurth, 
Miiller, Boissier, Hooker, Broun, and Cooke have ased. 
The only types not seen have been two each of Burmann and 
Visiani, and one each of Geiseler, Delile, and Presl; the present 
whereabouts of these seven types it has not been possible to trace. 
he recent monograph in the ‘ Pflanzenreich ’ renders unneces- 
sary the preparation of another. At the same time a survey of 
the material known to be available for study may be of use as 
(5214.) Wet. 152—699. 1,125. 4/18. J.T. &S8., Ltd. G.14. Sch. 12. 
