POLYGONACE^E 



7. R. obtusifolius (Broad-leaved Dock). — A tall, stout species, 

 2 — 3 feet high, with ascending branches; lower leaves ovate- 

 oblong, cordate, blunt, finely crenate, wavy, with slender stalks ; 

 upper oblong-lanceolate ; flowers in distant whorls, leafless above ; 

 inner perianth-segments long, triangular, blunt, with -netted veins 

 and usually strong teeth at the base, and an ovoid red or brown 

 wart. — Waste places; common. — Fl. July — September. Perennial. 



8. R. cr i s pus 

 (Curled Dock).— The 

 commonest of the 

 Docks, 1 — 3 feet high, 

 branched ; leaves stalk- 

 ed, lanceolate, acute, 

 wavy, and crisped ; 

 flowers in crowded 

 whorls forming a pani- 

 cle, with erect branches, 

 leafy below, often 

 tinged with a bright 

 red ; inner perianth-seg- 

 tnents equal, cordate, 

 blunt, netted, green or 

 red, with a small, 

 smooth wart. — Waste 

 places ; far too com- 

 mon. — Fl June — 

 October. Perennial. 



9. R. domesticus 

 (Long - leaved Water 

 Dock). — A very ro- 

 bust, smooth species, 

 1 — 4 feet high ; leaves 

 very large, lanceolate, 

 waved, and crisped, on 

 semi-cylindric petioles 



with slightly raised edges ; flowers in crowded whorls, forming a 

 large, dense, lobed panicle, leafy at the base only ; inner perianth- 

 segments broadly cordate, membranous, netted, without warts. — 

 Meadows in the north ; frequent ; preferring spots liable to be 

 flooded. — Fl. July, August. Perennial. 



10. R. Hydroldpathum (Great Water Dock). — A picturesque 

 plant, 3 — 6 feet high, erect, branched, smooth ; leaves often more 

 than a foot long, lanceolate, acute, often cordate at the base, 

 finely crenate on long petioles which are not winged : flowers 



ri'mex acet^sa (Common Sorrel). 



