23,3 Merrill: Diagnoses of Hainan Plants, II 239 



The underground stems are gathered for use for medicinal 

 purposes. 



MARANTACEAE 



PHRYNIUM OLIGANTHUM sp. nov. 



Herba circiter 1 m alta, glabra ; foliis longe petiolatis, lamina 

 chartacea, elliptica ad oblongo-elliptica, 30 ad 40 cm longa, 13 

 ad 17 cm lata, breviter acute acuminata, basi subrotundata; 

 capitula oblonga, 5 ad 8 cm longa, 2.5 ad 3 cm diametro, imme- 

 diate e vagina egrediens folio solitario comitata ; bracteis glabris, 

 exterioribus ellipticis, usque ad 4.5 cm longis et 3 cm latis, late 

 rotundatis vel brevissime apiculato-acuminatis. 



Ng Chi Leng, McClure 93 W, 9602 (type) , April 20 and May 

 14, 1922, on forested slopes. Local name : Chung ip or tung ip. 



The fugacious flowers are so badly preserved that no dissec- 

 tion is possible. They are described as yellow. The portion 

 of the petiole above the insertion of the inflorescence attains 

 a length of about 25 cm, the sheathing part being about 7 cm 

 long and nearly 3 cm wide when spread. The species is mani- 

 festly allied to Phrynium thorelii Gagnep. of Indo-China, from 

 which it is distinguished by its glabrous bracts. 



FAGACEAE 



QUERCUS HAINANENSIS sp. nov. § Pasania. 



Arbor 5 ad 7 m alta, ramulis inflorescentiisque dense cinereo- 

 pubescentibus, ramis teretibus, glabris; foliis chartaceis vel 

 subcoriaceis, integris, oblongo-ellipticis, olivaceis, nitidis, 8 ad 

 14 cm longis, 3.5 ad 6 cm latis, perspicue acuminatis, basi 

 acutis, supra glabris, costa nervisque impressis, subtus ad costa 

 leviter pubescentibus glabrescentibus, nervis utrinque 15 ad 20, 

 valde perspicuis, reticulis tenuibus, subparallelis ; stipulis lineari- 

 lanceolatis, circiter 4 mm longis; petiolo 1 cm longo, pubescente; 

 spicis erectis, pedunculatis, 8 ad 11 cm longis, sub anthesin 6 

 mm diametro, floribus $ numerosis, confertis, 9 paucis, dense 

 pubescentibus; infructescentiis brevibus, spiciformibus, circiter 

 4 cm longis, fructibus junioribus plerumque binis vel trinis, 

 circiter 1.5 cm diametro; cupulis hemisphaericis, crassis, cine- 

 reo-pubescentibus, squamis numerosis, lanceolatis, crassis, in- 

 flexis, 2 ad 3 mm longis; glandibus omnino immersis, apice 

 truncato-convexis, junioribus cinereo-pubescentibus. 



Ka La, Yik Tsok Mau, Ta Hon, and Sai Ching, MeClure 976U 

 (type), 9255, 9758, 9202, April and May, 1922. On forested 



