MR. G. BENTHAM OX EUPHORBIA.CE.E. 227 



foliaceous fruiting calyx, and in other characters. 10. Sagotia, a 



single tropical American species, with the enlarged fruiting calyx 



nearly of Blachia and Dimorphocalyx, but with very peculiar 



anthers, and the capsule opening rather in valves than separating 

 into cocci. 



Cluytia, of which 28 species have been published from southern 

 and tropical Africa, stands alone in the subtribe : the inflorescence 

 and habit are those of Phyllanthese ; but the essential characters 

 are those of Chrozophoreae. 



The subtribe closes with nine genera having the male calyx val- 

 vate and the petals free in both sexes. The first four have a rudi- 

 mentary pistil prominent at the apex of the stamina! column, or 

 in the centre of the free stamens ; the remaining five have no trace 

 of the pistil in the male flower. 1. Agrostistachys, which Baillon 

 has with good reason united w r ith Sarcoclinium ; but the former 

 name appears to have the right of priority. The very singular 

 short spikes of the typical Agrostistachys, which have been com- 

 pared to the spikelets of Grramineae, pass gradually in some 

 species into the long slender spikes or racemes of Sarcoclinium. 

 There are 6 or 7 species, natives of tropical Asia and Africa ; 

 for to the five described in the ' Prodromus ' must be added 

 one or two unpublished Malayan ones with exceedingly lono- 

 racemes. 2. Argithamnia, about 37 American tropical and sub- 

 tropical species, well characterized and divided into sections 

 in the ' Prodromus,' from which, however, I would exclude and 

 retain as a distinct genus the North-Chinese Speranskict. 3. Ca- 

 peronia, an American genus extending sparingly into tropical 

 Africa, well distinguished both in habit and character : 19 species 

 have been enumerated ; but many of them run so much into one 

 another that the number will probably have to be much reduced. 

 4. Pseudocroton, a very well-marked Guatemalan species, with 

 much of the habit and the scurfy indumentum of many species 

 of Croton, but with the characters of Chrozophorese. 5. Sum- 

 lavia, 2 species from the Malayan archipelago, differing but 

 little in habit or characters from Mallotus, except in the presence 

 of petals. 6. Tannodia, a single Madagascar species, unknown 

 to me except from description. 7. Crotonogyne, a single tropical 

 African species, of which the characters are as yet in some 

 measure doubtful, the only known specimens being imperfect. 

 8. Chrozophora, about 6 species, extending from the Mediter- 

 ranean region into tropical Africa and Asia, very well defined 



