248 Philippine Journal of Science 1919 



This species is very common in thickets in the vicinity of Can- 

 ton, Loureiro's type having been from Canton. J. Mueller ^^ notes 

 that Loureiro's description of the flowers and of the inflorescen- 

 ces does not conform to Croton; further it does not conform 

 with the characteifs of any euphorbiaceous plant known from 

 Kwangtung Province, but, with the exception of the fruit de- 

 scription, agrees entirely with the species currently known as 

 Xylosma racemosum Miq. It is clear that Loureiro either added 

 the fruit description to make his species agree with the generic 

 characters of Croton, or described the fruits from material 

 originating from a species entirely unrelated to the flowering 

 specimen described by him. I have examined the following 

 specimens from Kwangtung Province, mostly from the imme- 

 diate vicinity of Canton: Merrill 9850, 9993, Groff 2252, 2353, 

 Levine 18, 171, 172, 177, 279, 365, 366, 371, 17h9, 1809, 1829, 

 208 U, 3261, 33 U, To Rang P'eng 2727, 2737. The local names 

 recorded are wu ying shue (vicinity of Canton), ch'ui tung ts'ai 

 (North River region), and chit nga lak shil (Kochow region). 

 The name pa tau recorded by Loureiro should probably be ex- 

 cluded as it is the same as the name recorded by him for Croton 

 tiglium Linn. 



THYMELAEACEAE 



AQUILARIA Lamarck 

 AQUILARIA SINENSIS (Lour.) comb. nov. 



Ophiospermum smense Lour. Fl. Cochinch. (1790) 281. 

 Aquilaria chinensis Spreng. Syst. 2 (1825) 356. 

 Aquilaria grandiflora Benth. FL Hongk. (1861) 297. 



Loureiro cites no definite locality, but from the fact that he 

 indicated the local name pa mou yong as Chinese it is clear that 

 his material was from China, and in all probability from the 

 vicinity of Canton. The description definitely applies to the 

 species commonly known as Aquilaria grandiflora Benth., one 

 that is not uncommon in the vicinity of Canton. Loureiro's 

 description of the perianth as 6-merous was apparently due to 

 an error on his part, for he enumerates the stamens as five, thus 

 indicating that he was describing a 5-merous flower. I have 

 examined the following Kwangtung material : Groff 2^87, Mer- 

 rill 10962, Levine 996, 1^00, 2070, from Tsangsheng, Wa Shau 

 Toi, White Cloud Mountain, and Honam Island, the last two 

 localities being in the immediate vicinity of Canton. Loureiro's 



"DC. Prodr. 15' (1866) 696. 



