GENERA. 



I. KUBIE^, 



1. Rubia T. — Flowers hermaphrodite or polygamous; receptacle 



very concave saclike, enclosing adnate germen ; calyx 0. Corolla 



gamopetalous, rotate or subcampanulate ; lobes 2, 3 or oftener 4 



{Galium) or 5 (Euruhia), valvate. Stamens same in number, inserted 



in tube of corolla and alternating with lobes; filaments short; anthers 



sub-2-dymous, oftener exserted ; cells 2, introrsely rimose. Germen 



2- rarely by abortion 1 -celled, crowned with simple or more rarely 2- 



lobed epigynous disk; style 2-fid or 2-partite; branches stigmatose 



at capitate apex. Ovules in cells solitary, more or less completely 



anatropous or amphitropous, ascending, basifixed ; micropyle ex- 



trorsely inferior, raphe ventral. Fruit 2-dymous, fleshy (Euruhia, 



Didymcea) or coriaceous or dry (Galium^ Vaillantia), by abortion 



sometimes 1-celled, externally glabrous, hispid, tuberculate, or 



longitudinally cristato-dentate (Mericarpcea) ; cocci 1-spermous. Seed 



ascending subpeltate, concave within ; hilum broad ; albumen thick 



horny ; radicle of curved embryo inferior. — Herbs, rarely shrubby at 



base, generally scabrous, hispidulate or aculeate; branches oftener 



4'gonal ; leaves opposite ; stipules interpetiolar conformed to leaves 



and spuriously verticillate with them, or more rarely small and not 



conformed to leaves (Dichjmoia) ; flowers (small) in axillary and 



terminal generally very compound, sometimes contracted cymes, ex- 



involucrate {Euruhia, Didymma, Mericarpcea, Galium), or singly invo- 



lucrate with 4 bracts {Belhunium) , more rarely 3-nate, pendulous; 



each enclosed by a cymbiform accrescent bract {Callipeltis) or 



thickened by decurved connate pedicels ; the middle one fertile. 



{Warm, cold and temp, regions of the whole ivorld.) — See p. 257. 



