New and Rare Malayan Plants, 



Series IX. 



By H. N. Ktdley, f.r.s. 



In continuing my work on the Flora of the Malay Peninsula, 

 I find a number of plants in the earlier collections which have been 

 overlooked and not described, as well as several genera in which the 

 species, chiefly described from more or less inadequate dried speci- 

 mens, seem to have been much confused ; such genera are Glycosmis, 

 Ventilago and Allophyllus. In critical genera like these a really 

 big series of specimens is required and this we seldom possess in 

 any tropical genus. Some also differ more in habit than in what 

 may be called herbarium characters. In the field one could not mis- 

 take the one for the other ; but specimens without adequate notes as 

 to height, and form of growth may look so far similar that a botanist 

 who has not seen the plants alive may easily be led into thinking 

 that they are all mere forms of one somewhat variable species. We 

 really want more collecting and observation done. I have been sur- 

 prised to note how very badly many of our commonest plants are 

 represented in herbaria. The collections of an amateur who, just 

 commencing the study of botany collects every weed he can find, 

 are often extremely valuable, as the plants he gathers are just the 

 plants that others neglect. 



ANONACEAE. 



Unona. Safford in Bull. Torrey Club, xxxix. p. 502, shows that 

 the original species of this genus was an American plant to 

 which were later added among others the species known as 

 Unona in the East Indies : and eventually the original Unona 

 discreta, Linn, fil., was actually excluded from the genus. 

 This plant proves to be a Xylopia. The East Indian plants 

 are quite distinct from it so that the generic name Unona dis- 

 appears as a synonym of Xylopia. The earliest name for the 

 East Indian " Unona " is De.wios of Loureiro and the follow- 

 ing are the names of the Malay species of Unona now referred 

 to that genus. 



Destnos cochinchinensis, Lour. Fl. Cochinch. I. 352, Unona 

 desmos, Dunal. 



Jour. Straits Branch R. A, Soc. No. 75, 1917. 



