l-i.-dyotu.] LXIV. UUBIACB^. 749 



4. H. trachymenioides (Trachymene-like), F. v. ^[. Fragm, iv. 40 ; Benth. 

 Fl. Atixtr. iii. 405. Perennial, erect, with numerous dichotomous branches, 

 slender but rigid. Leaves linear-filiform, the upper ones very short. Stipular 

 sheath short, entire or with 1 or 2 short bristle-like lobes on each side. Pedicels 

 slender in the upper axils, forming sometimes an irregular panicle. Calyx-tube 

 very short, broad, with distant teeth. Corolla-tube slender, nearly 2 lines long ; 

 lobes much shorter. Fruit 1^ line broad and scarcely 1 line long, compressed, 

 furrowed at the dissepiment, the capsule halt exserted, opening loculicidally in 

 "2 valves. Seeds rather numerous, orbicular, concave, thin, peltately attached by 

 a prominent ridge on the concave face. 



Hab.: Dawson Itiver, F. v. Mueller ; Isaacs Kiver, Bowman. 



This species agrees perfectly with the N. American Housionias in flower, fruit and seed, 

 although with the habit of Oldenhindia. — Benth. 



7. OLDENLANDIA, Linn. 



(After H. B. Oldenland.) 



Calyx-teeth 4 rarely 5, usually erect and distant in fruit, with sometimes alter- 

 nating teeth. Corolla rotate, funnel or salver- shaped, tube short or long ; lobes 

 4 or rarely 5, obtuse, valvate. Ovary 2-celled ; style filiform ; stigmas 2, linear ; 

 ovules numerous, placentas attached to the septum. Capsule small, usually 

 membranous, terete, didymous, or angled, loculicidal at the top, rarely indehiscent, 

 many-seeded. Seeds angled or globose, testa not winged, smooth or pitted ; 

 embryo clavate in fleshy albumen. — Hook, in Fl. Brit. Ind. iii. 64. 



The species of this genus are chiefly Asiatic, and might (as is done by some botanists) all be 

 included in Hedyotis. 



Peduncles solitary, 1 to 4-fiowered. Seeds angular ; testa smooth .... 1. 0. corymbosa. 

 Cymes in the upper axils, short, 3 to 8-floweved. Seeds subglobose ; testa 



pitted 2. 0. paniculata. 



Peduncles filiform at the ends of the branchlets, solitary or in pairs. Seeds 



angular ; testa reticulate 3. 0. pelyclada. 



Pedicels in the upper axils, solitary or in pairs, or 2 to 4 on a common 



peduncle. Seeds small, slightly angular, black . . . . . . . i. (). cmrulescens. 



1. O. corymbosa (flowers corymbose), Linn.; Hum. in Olio. Fl. Trap. Afr. 

 iii. 62. An erect ascending or diffuse annual, smooth and glabrous or nearly so,, 

 branched, up to 1ft. in height. Branches 4-angled, usually smooth. Leaves 

 linear or nearly so, acute or apiculate, narrowed to the sessfle base, usually 

 glaucous or paler underneath, the longer ones f to l^in. long, or in some forms 

 longer ; stipules truncate, shortly sheathing, sub-3-setose. Flowers tetramerous, 

 white, 1 to 1^ line long, 2 to 5 together in axillary and terminal umbellate 

 corymbs usually rather shorter than the leaves or rarely solitary ; pedicels 1 to 8 

 lines long ; peduncles ranging up to iin. Calyx about equalling the corolla-tube, 

 teeth lanceolate, as long as the tube. Corolla campanulate or subrotate ; throat 

 pubescent or nearly glabrous. Anthers included or subexserted. Fruit sub- 

 globose, a little over 1 line diameter, subdidymous, crowned by the calyx-limb, at 

 length bursting loculicidally at the apex. Seeds angular. — Hiern I.e.; Hedyotis 

 Burmaniiiana, F. v. M. Fragm. vii. 45. 



Hab.; Bockingham Bay, F. v. M. I.e. 



2. O. paniculata (flowers paniculate), Linn. Burm. Fl. Ind. 38 t. 15 /'. 1. 

 A glabrous stout or slender annual, succulent, 6 to 18in. high, erect or diffuse, 

 branched from the base, the branches obtusely 4-angled. Leaves petiolate, 

 elliptic-ovate or oblong,^ to Sin. long, J to l^in. broad, bright green, soft, nerves 

 indistinct, narrowed to the petiole. Stipules truncate, with median points or 

 bristles. Cymes in the upper axils, short, 3 to 8-fid. Flowers minute, white. 



