170 King & Gamble — Flora of the Malayan Peninsula. [No. 4, 



EI. Br. Ind. III. 65. 0. herbacea, Roxb. PL Ind. I. 424. 0. linearis, 0. 

 linifolia and 0. asperula, DC. Prod. IV. 425. Hedyotis Heynii, W. & A. 

 Prod. 4] 6 ; Wall. Cat. 867 (in part). 



Penangj Curtis 1848, 3399 ; King; Deschamps. Province Welles- 

 let : King. Perak : Ridley 10313; Wray 1931. Singapore: Ridley 

 10916. — Disteib. Malay Archipelago; Tropical Africa. 



This passes into 0. dichotoma as regards its inflorescence there being some 

 specimens in which, by reason of the smallness of the leaves, the inflorescence 

 resembles a lax panicle. 



6. Oldenlandia diffusa, Roxb. Hort. Beng. 11 ; Fl. Ind. I. 423. 



Annual, diffuse, much-branched, dark brown when dry; glabrous. 

 Stems about as thick as a crow-quill when dry, compressed, obscurely 4- 

 angled, striate. Leaves linear-oblong, tapering to each end, the bases 

 continuous with the stipules, the edges recurved, rather pale on the 

 undersurface and the midrib prominent; length "5 to 1*5 in.; breadth 

 •05 to '1 in. Stipules cupular, the edges with a few short bristles 

 towards the middle. Flowers "15 in. long, solitaiy, axillary, sub-sessile 

 or on peduncles "05 to "1 in. long, reflexed. Calyx widely campanulate, 

 with 4 erect triangular acute 1-nerved teeth. Corolla longer than the 

 calyx, widely campanulate, the mouth with 4 erect rather short broad 

 triangular teeth. Anthers shorter than the style, small, narrowly ovoid ; 

 filaments rather short. Stigma with 2 divergent lobes. Capsule de- 

 pressed globular, crowned by the small calyx-teeth, slightly more than 

 •1 in. in diam., many-seeded. DC. Prod. IV. 426 ; Hook. fil. Fl. Br. 

 Ind. III. 64; Trim. Fl. Ceyl. II. 315. O. brachypoda, DC. I.e. 424; 

 Wall. Cat. 874. Hedyotis ramosissima, Kui'z in Jonrn. As. Soc. 1877 II. 

 133. H. diffusa, Willd. Sp. PI. I. 566; Wall. Cat. 868 (in part). H 

 extensa, Wall. Cat. 869. H. polygonoides, Wall. Cat. 872. 



In all the provinces except the Andamans ; common. — Disxrib. 

 Tropical Asia ; Japan. 



7. Ollenlandia irixervia, Retz Obs. IV. 23. Annual, herbaceous, 

 glabrous or hairy, procumbent, greenish brown w r hen dry. Stems very 

 slender, grooved, 4-angled, sparsely hairy, often rooting at the nodes. 

 Leaves ovate-rotund to rotund or elliptic, thickly membranous, midrib 

 distinct below but the 1 or 2 pairs of nerves obscure, both surfaces 

 glabrous or sub-glabrous ; length -2 to '3 in. ; breadth under '05 or over ; 

 petiole usually under '05 in. long. Stipules scarious, campanulate with 

 a few bristles. Flowers -05 in. long, solitary, axillary, on short reflexed 

 pedicels. Calyx campanulate, with 4 acute spreading teeth, sparsely 

 pilose. Corolla slightly exceeding the calyx, with 4 broad, ovate, sub- 

 acute lobes, glabrous. Capsules somewhat compressed, broadly ovate, 

 truncate at the apex, crowned by the small calyx-lobes, dehiscing at 



