NEW AND RARE MALAYAN PLANTS. 7 



Unona latifolia, Hook, fil., Fl. Brit. Ind. I. 60. 



Unona Brandisana, Pierre, Fl. Forest Cochineh. p. 19 is 

 referred by Safford to the genus Canangium , as Canangium 

 Brandesanum, Safford (I.e. p. 504). 



It is certainly closely allied to Canangium Scortechinii 

 having the long conic anther appendage and elongated style of 

 that species. The style of Canangium odoratum is however 

 quite different. 



It is regrettable that Safford published the name as Cana- 

 gium Brandesanum as Pierre intended to associate the plant 

 with Sir Dietrich Brandts and called it Brandisana. It should 

 have been in correct Latin Brandisianum. 



Canangium monospermum (Cananga monosperma, Hook. fiL). 



" A tree about 5 feet high : stem about the size of a man's 

 thumb found on the top of Gov. Hill." " Large tree with a 

 thick stem found about half way going up Government Hill " 

 in Maingay's collections. This has been treated by Hooker 

 and King as a doubtful plant; and the fruit with the specimens 

 perhaps does not belong. It is no Canangium and I am very 

 doubtful as to what it is. It lias not been collected since Main- 

 gay's time; neither Curtis nor Mhd. Haniff nor I myself have 

 been able to find it. It requires searching for again. 



Sphaerocoryne, Scheff. ms. in Boerlage, Ic. Bogor. LXIX. 



The species on which Scheffer apparently intended to base 

 this genus, 8. siamensis, was put by Boerlage into the genus 

 Polyalthia as P. siamensis, when he described Scheff er's spe- 

 cies. It had however been already described by Pierre, Fl. 

 Forest. Cochineh., as Unona Mesnyi (PL IT). Pierre seemed 

 doubtful as to where to place the plant, as in Herb. Kew he 

 writes notes on it referring it also to Popowia'. and Craib (Kew 

 Bulletin, 1914, p. 5) makes a new combination of this as Popo- 

 wia Mesnyi. Popowia edulis, Pierre, seems to me the same 

 thing. Two other species closely allied to this species are Poly- 

 althia affinisj Teijsm. and Binn., in Tijdschr. Nederl. Ind. 

 xxvii (1864) 37; Boerlage, Ic. Bogoriensis, t. LXIII, of un- 

 known origin cultivated at Buitenzorg and Polyalthia aberrant, 

 Maingay in Hook. hi. Fl. Brit. Ind. i. 6T of Malacca and 

 Perak. 



It does not seem possible to refer these three plants to any 

 of the genera suggested, and I therefore propose to keep up the 

 proposed genus of Scheff er's Sphaerocoryne which I define be- 

 low. The affinities of these plants are obscure, but they are 

 certainly allied to Scheff er's Raawenhoffia from which Sphaero- 

 coryne differs mainly in its small stigmas, cylindric style and 

 single or 2 ovules. Rauirenlioffia has very large stigmas, a very 

 short style and many ovules. 



R. A. Soc, No. 75, 1917 



