200 DICOTYLEDONS. - POLYGONE/E. 



at the margin, nerves of the stipules distant, stem procumbent 

 herbaceous, p. 122. Way -sides. 



. *-# Leaves cordate. (Fagopyrum.) 



9. P. Fagopyrtim, leaves cordato-sngittate, stem nearly upright 

 without prickles, angles of the fruit even. p. 122. Fields. 



10. P. Convolvulus, leaves cordato-sagittate, stem twining angu- 

 lar, segments of the perianth bluntly keeled, p. 122. Fields. 



2. RUMEX. 



Perianth of G leaves. Slam. 6. Styles 3. Nut triquetrous, 



covered by the 3 interior valviform leaves of the perianth. 



* Flowers all perfect ; valves graniferous. (Lapatha.) 



f Valves entire. 



1. R. aqualicH-s, valves ovate entire bearing small grains, leaves 

 lanceolate acute, the lower ones cordate at the base. p. 112. 

 River sides. 



2. R. crispns 9 valves very large cordate entire reticulated bearing 

 grains, leaves lanceolate waved acute, p. 112. IVay-sides. 



3. R. sanguineus, valves oblong (small) entire, one at least bear- 

 ing a grain, leaves lanceolate somewhat heart-shaped, p. 112. 



ft ralves toothed. 



4. R. aculus, valves oblong somewhat toothed all bearing grains, 

 leaves cordato-oblong acuminate, whorls leafy. p. 1 12. Pas- 

 tures. 



5. R. pulcher, valves oblong toothed one of them principally 

 bearing a grain, radical leaves panduriform, stem smooth dif- 

 fuse. p. 113. Way-sides. 



6. R. oltus'ifolmS) valves ovate toothed one principally bearing 

 a grain, radical leaves ovato-cordate obtuse, stem roughish. 

 p. 113. Way-sides. 



7. R. maritimuSy valves deltoid fringed with setaceous teeth 

 bearing grains, leaves linear, whorls much crowded, p. 113. 

 Salt marshes. 



8. R. paluslris, valves lanceolate with short setaceous teeth near 

 the base bearing grains, leaves linear-lanceolate, whorls di- 

 stant. p. 113. Marshes. 



** Flowers polygamous ; valves graniferous. 



9. R. atpinus, flowers polygamous, valves 1 2 graniferous, 

 leaves ovato-cordate obtuse wrinkled. Decand. Mountains, 

 rare*. 



a This species, I am recently informed by Mr. Maughan, has been found 

 truly wild by Mr. G. Don on the Ochill-hills, Clackmannanshire, far from 

 any cultivated ground. 



