216 



limb nearly 2 mm. Long, with 1 rounded teeth. Petals 4, ovate-lanceolate, 

 about 5 nun. long, 2.2 mm. wide in the middle narrowed below and to 

 the acuminate apex. Stamens 8; filaments about 2 mm. long; anthers 

 lanceolate, about 2 mm. long, rostrate, the basal dorsal spur about 

 0.5 mm. long. Ovary 1-celled ; style 5 mm. Long. 



Mindanao, Take Lanao, Camp Keithley (433, 361 Mrs. Clemens) March, L906; 

 (.•{1)20 Hutchinson) March, 1906. 



A typical Malayan genus, of which no species has previously been reported from 

 the Philippines, the present species being well characterized by its thickened 

 lmlb-like roots, which are inhabited by colonies of ants, in this respect resembling 

 the symbiosis found in the rubiaceous genera Hydnophytwn and Myrmecoidea. 



BALORRHAGACE^E. 



HALORRHAGIS Foist. 



In Schindler's recent monograph of this family 18 ao species of the 

 genus Halorrhagis are credited to the Philippines. Schindler recognizes 

 59 species of Halorrhagis, of which 5*3 are confined to Australia and New 



Zealand, one to the Asiatic continent, and one extending over the entire 

 range of the genus, from New Zealand and Australia to Japan, China, 

 and Bengal. Three species of the genus are represented in our Philip- 

 pine collections, one of which is apparently undescribed. 



1. Calyx tube papillose-punctate, the ribs scabrous. 



2. Stamens (> to S ; inflorescence paniculate ; leaves lanceolate, 



about i.r> cin. long ( 1) H. scabra elongata 



2. Stamens 4 ; inflorescence racemose ; leaves elliptical-oblong, 



1 cm. longer less (2) H. philippinenaia 



1 Calyx tube quite glabrous, not papillose-punctate, the ribs not 



scabrous .: (3) H. micrantha 



ill Halorrhagis scabra (Koenig) Benth., var. elongata Schindler in Engler's 

 I'llan/.enreich 23 | L905) 28. 



Crr.iON (4r>!) Merrill) December 13, 1902. In damp deserted rice lands near 

 the sea level. 



This variety has previously been known only from southern China. Hoiitfkoiiy, 

 and Annam, although another variety of the same aperies is found in the Khasia 

 Mountains. British India. The Philippine plant here referred to. Halorrhagis 

 soabra, agrees very closely with the description and with specimens from Hong- 

 kong kindly supplied me by the Director of the Hongkong Botanic Garden, 



(2) Halorrhagis philippinensis Merrill sp. nov. 



A scabrous herb 8 to 20 cm. high, erect or spreading, more or less 

 branched from the base;, with simple racemose inflorescence, the flowers 

 solitary in the axils of the bracts, the calyx manifestly papillose-punctate, 

 Bcabrous OB the ribs but not parallel callose. the stamens four. Branches 

 slender, appressed-pilose, 4-angled. Leaves elliptical oblong, coriaceous, 

 sparingly pilose, ." ( to L0 cm. long, 2.5 to 5 cm. wide, short petioled or 

 subsessile, mucronate acuminate or acute, the base acute, the margins 



ls Engler's Pflanzenreioh 23, L905. 



