144 62. POLYGONACE^E. 



3. R. OBTUSIFOLIUS, L. Var. Friesii, Gr. and Godr. Broad- 

 leaved Dock. Stem erect, 2 3 ft. high, striated, with rough 

 points between the ridges. Radical le. ovate-oblong, cordate at 

 the base, blunt at the apex; upper ones getting narrower and 

 more pointed. Whorls of fl. distinct, upper ones leafless. En- 

 larged segments of the peri, ovate-deltoid, with 3 4 sharp, 

 subulate, spreading teeth, variable in length, not longer than the 

 width of segments, only one bearing an enlarged tubercle. 



Very common. On roadsides and waste places. (B) P. 7 9. 



4. R. PRATENSIS, M. and K. Meadow -Dock. Similar to the 

 last, le. narrower, radical ones oblong-lanceolate, waved. Fl. in 

 distinct whorls, leafless at the top. Enlarged segments of the 

 peri, cordate, dilated and toothed to the top with short broad 

 teeth, only one bearing a tubercle. 



Waste ground, Lamlash, /. G. Baker. (E) P. G 7. 



5. R. AQTJA.TICUS, L. Gramless Water-Dock. Resembles R. 

 crispus, but scarcely so much crisped. Enlarged segments of the 

 peri, cordate, entire, reticulate, without an enlarged tubercle. 



This species existed at Scotstown previous to the widening of the Clyde, but not 

 found now ; below Renfrew; banks of the Clyde at Bothwell. (S) P. 78. 



* 6. R. ALPINUS, L. Alpine-Dock, Montis-Rhubarb. Stem 

 12 in. high. Le. roundish -cordate, obtuse, 810 in. broad, 

 wrinkled. Whorls without le., crowded; fl. monoecious. En- 

 larged segments of the peri, ovato-cordate, entire, or obscurely 

 toothed, membranous, one bearing a very small tubercle. 



Rare. Roadside from TIelensbnrgh to the head of the Gareloch, and in 2 or 3 

 stations in that neighbourhood, H. & A. P. 7. 



7. R. SANGUINEUS. L. Bloody '-veined- Dock. Stem erect, 2 

 ft. high. Le. oblong or lanceolate, waved on the edge; lower 

 ones cordate at the base, with red veins. Whorls of fl. distant, on 

 long leafless branches. Enlarged segments of the peri, oblong, 

 narrow, entire blunt, reticulated, only one bearing an enlarged 

 tubercle, which occupies the base of the segment, leaving no 

 membrane on its edge. 



Very rare. "In the woods, Bothwell," ffopk. " On the bank between Avon 

 and Barncluith gardens," Patr. Near Dumbarton. (B) P. 78. 



Var. viridis, with green veins. 



Frequent. Dalbeth ; banks of Clyde, opposite side from Carmyle ; Bothwell 

 bridge ; Cumbrae and Arran. 



8. R. CONGLOMERATE, Murr. Sharp-Dock. Stems erect, 

 2 3 ft. high, branches spreading. Le. oblong, pointed, radical 

 ones rounded or cordate at the base, waved at the edges, whorls 

 distant, leafy. Enlarged segments of the peri, linear-oblong, 

 blunt, entire or obscurely toothed, all bearing a tubercle. 



Common. Banks of rivers and wet places. (B) P. 68. Banks of Clyde at 

 Dalbeth; Cathcart, Kelvin, &c. 



