6 NEW AND HARE MALAYAN PLANTS. 



Desmos chinensis, Lour. I.e. p. 352. Unona discolor, Vahl. 

 Desmos Dunalii, Safford I.e. p. 506. Unona Dunalii, Wall. Cat. 

 Desmos dumosa, Safford I.e. p. 506. V nonet dumosa, Eoxb. 



Desmos dasymaschala, Safford I.e. 507. Unona dasymaschala] 



Bl. 

 Desmos filipes, Eidl. Unona filipes, Ridl. 



The genus when confined to the shrubs with large rather 

 thin flowers with two series of unequal petals and moniliform 

 fruiting carpels forms a well-defined genus : but to it has un- 

 unfortunately been added a section Stenopetalae including 

 Desmos Wrayi, D. desmantha, I), crinita, D. stenopetala all 

 Unonas of Hook. hi. & King, and kept in Desmos by Safford. 

 These are small trees about 20 feet tall with the flowers and 

 fruit exactly of Polyalthia and closely allied to P. Beccarii. 

 The ovaries in the species referred to Unona (Desmos) contain 

 from 2 to 5 ovules. The distinction given to Polyalthia from 

 Unona is that it has but one or two ovules. None of the 

 species of this supposed section of Unona have moniliform 

 fruit, hut 3 seeds are often developed. 



I propose to remove all of them to their correct genus 

 Polyalthia and transfer them to their real affinity with P. 

 Beccarii, under the names of Polyalthia Wrayi, P. des- 

 mantha, P. crinita and P. stenopetala. 



Unona pyenantha, Hook. hi. only known from Maingay's 

 specimen looks to me to be a young specimen of one of these 

 species probably P. destnantha, in which the flowers are not 

 fully developed. 



Polyalthia cauliflora, Hook. fil. and Thorns., Fl. Ind. 138; Hook. 

 hi., Fl. Brit. Ind. I. 60, was based on Wallich's Uvaria cauli- 

 flora (Wall. Cat. 6476) a plant collected in Singapore. King 

 omitted it altogether from the " Materials for a flora of the 

 Malay peninsula" but quoted the description in the Annals 

 of the Botanic Gardens of Calcutta (Anon-aceae) and said it 

 was indeterminable. I have examined the type in Wallich's 

 herbarium and find it to be identical with Polyalthia Teys- 

 manni, Boer!., Ie. Bogor. I 107 ; Guatteria Teysmanni, Miq. 

 Fl. Ind. Bat. Suppl. 378. 



This species is very common in Singapore and much 

 resembles P. Beccarii. It is a small tree with a stem 3 inches 

 through with transversely wrinkled bark. The flowers are 

 orange yellow, and not cinnamon brown as in P. Beccarii; the 

 fruit is larger and sometimes at least pubescent. 



It occurs in Singapore, at Chan Chu Kang (6231 of my 

 collection), Toas river and Changi (5980); also on Gunong 

 Panti in Johore; at Scpang in Sklaxoor; and on the Tahan 

 river in Paiiaxc;, usually in rather sandy open wools. 



Jour, Straits Branch 



