23,3 Merrill: Diagnoses of Hainan Plants, II 251 



fertilibus 1 mm longis, cupulis 1 mm diametro, sterilibus 1.2 mm 

 longis, incrassatis, truncatis, incurvatis, cristatis; ovario pu- 

 bescente; stylis 1 mm longis. 



Yik Tsok Mau, McClure 9732, May 19, 1922, in forested 

 ravines, the flowers yellowish white. The local name is re- 

 corded as Fa muk heung, with the statement that the Chinese 

 on the mainland use the bark of the tree for making incense. 



The species belongs in the group with Meliosma simplicifolia 

 Roxb. and strongly resembles the common forms of Buchanania 

 arborescens Blume; so much so that on preliminary examination 

 the specimen was so named. Among other characters it is 

 distinguishable from Roxburgh's species in its larger, distinctly 

 pedicelled flowers, pubescent ovaries, and thicker leaves. 



TSANGTAKII sp. nov. 



Arbor circiter 20 m alta, ramulis et subtus foliis ad costa 

 nervisque dense ciliatis, paniculis dense pubescentibus ; ramis 

 teretibus, glabris, circiter 4 mm diametro, ramulis brunneis, 

 leviter lenticellatis ; foliis simplicibus, integerrimis, oblongis ad 

 oblongo-ellipticis vel oblongo-obovatis, coriaceis, 7 ad 12 cm 

 longis, 3 ad 3.5 cm latis, subcaudato-acuminatis, basi cuneatis, 

 supra glabris, nitidis, olivaceis, costa nervisque impressis, subtus 

 pallide brunneis, perspicue ciliatis, nervis utrinque circiter 10, 

 adscendentibus, valde perspicuis; petiolo 1.5 ad 4 cm longo, 

 pubescente; paniculis terminalibus, erectis, 10 ad 12 cm longis, 

 pedunculatis, dense pubescentibus, ramis inferioribus usque ad 

 4 cm longis, patulis vel adscendentibus ; floribus numerosissimis, 

 sessilibus, sepalis leviter pubescentibus, ovatis, 1 mm longis; 

 petalis majoribus orbiculari-ovatis, 2 mm diametro, minoribus 

 oblanceolatis ad spatulatis, 1.5 mm longis; filamentis fertilibus 

 0.8 mm longis, cupulis 0.5 mm diametro, sterilibus 1.5 mm longis, 

 truncatis, incrassatis, cristatis, ovario glabro, stylis 1 mm longis. 



Ng Chi Leng, McClure 9438 (type) , 9498, May 4 and 9, 1922, 

 in densely forested ravines on the south slope of the mountain. 



A species strongly characterized by its prominently nerved, 

 subcaudate-acuminate, long-petioled, coriaceous leaves which are 

 olivaceous, shining, and with prominently impressed lateral 

 nerves and costa on the upper surface, the lower surface being 

 pale brownish and rather densely ciliate, especially on the con- 

 spicuous ascending nerves and on the costa. It is dedicated to 

 Tsang Tak, one of the attaches of Mr. McClure's second expe- 

 dition to Hainan. 



