RUBIAOE^. 393 



deeply pinnatisect. Corolla funnel-shaped hypocrateriform ; tube 

 sometimes elongate ; lobes valvate ; throat pilose. Stamens 3, 4, 

 inserted in throat ; filaments short ; anthers dorsifixed, sometimes 

 apiculate, introrse, more or less exserted or enclosed, sometimes 

 cohering marginally around style ; cells introrsely rimose, sometimes 

 barbate at base. Glandules of epigynous disk 2, free, sometimes high, 

 Germen 2-4-celled ; style slender exserted, at stigmatose apex sub- 

 entire or 2-4-branched. Ovules in cells solitary, inserted at greater 

 or less height on septum ; micropyle extrorsely inferior. Fruit cap- 

 sular membranous, 2-4-celIed, circumgcissile above middle ; seeds 

 ovoidly 3-quetral ; embryo minute terete, richly albuminous. — Annual 

 or perennial herbs; stem simple or slightly branched; villose or 

 hirsute; branches slender; leaves small opposite or 3-nately verti- 

 cillate; stipules interpetiolar very small or subnil; flowers* in spikes 

 oftener short capituliform terminal or ramose {BucMa ^) , pedunculate, 

 bracteate ; bracts 1-floral, conformed to sepals, sometimes pinnatisect 

 with them. (South America.^) 



6. Triodon DC* — Flowers (nearly of Spermacoce) 4-merous ; lobes 

 of epigynous calyx 2-4 ; 2 lateral larger ; a few denticules between. 

 Corolla tubular-funnel-shaped, 4-lobed, valvate. Stamens 4, inserted 

 in the hollows of the throat or mouth ; anthers partly exserted. Disk 

 rather concave, situate at the top of the 2-lobed germen ; style inserted 

 at bottom of hollow, erect, at apex divided into 2 teeth or branches. 

 Ovules solitary, amphitropous, inserted on septum ; micropyle ex- 

 trorsely inferior. Fruit oftener obconical or obcordate ; cells some- 

 times free above and there separated by a hollow. Seeds plano-convex, 

 sulcate at face ; albumen fleshy or rather hard ; cotyledons of axile 

 embryo superior subfoliaceous. — Small shrubs ; branches virgate, 4- 

 gonal'; leaves small opposite or spuriously verticillate ; stipules 

 interpetiolar, sheathing, ciliate or incised at apex, persistent ; flowers ^ 

 in cymes or spicate or compound racemose glomerules, subulately- 

 bracteolate.'' (Trop. America.'') 



7 ? Psyllocarpus Mart, and Zuco.^ — Flowers hermaphrodite 



' Very small, immerged in scales. ' Small, pink or white (f). 



" H. B. K. Nov. Gen. et Sp. ii. 269, 1. 132. « Rather a sect, of Spermacoce ? 



^ Spec. 5, 6. A. S.-H. Voy. Distr. Diam. ii. ' Spec, ahont 6. Cham, et Schlchtl, imHaa, 



419.— PcEPP. et Endl. Nov. Gen. et Sp.i. 285.— iii. 343 {Siodia). — Walp. Rep. yi. 30. 



"Walp. Eep. ii. 467 ; vi. 31. . « Nov. Gen. et Sp. i. 44, t. 28.— DC. Frodr. iv. 



4 DC. Frodr. iv. 566.— Endl. Gen. n. 3124.— 570.— Endl. Gen. n. 3131.— B. H. Gen. ii. 146, 



B. H. Gtn. ii. 143, n. 313. n. 321.— Modois Pohl, Flora (1825), 123. 



