POLYGONACE 117 
The following species are alpine:—R. alpinus, L., Alpine 
Dock; leaves large, roundish-cordate, leaf-stalk strongly 
channelled, stem 2-3 ft.; pastures, common, especially 
near cow-huts. A. scutatus, L.; stem prostrate, glabrous, 
very brittle, leaves hastate or sagittate, with large basal 
lobes; stony places and walls, frequent. . arzfolius, 
All.; stem ascending, I-3 ft., leafy, leaves thin, with 
spreading auricles; pastures and damp places, not un- 
common. &. xzvalzs, Heg.; stem 2-4 in., simple, leaf- 
less, flowers in whorls, leaves rather thick, with indistinct 
auricles ; very high ; Switzerland, Tirol, Carniola, Bavaria. 
The remaining species are English, viz. :—The various 
species of Dock :—RK. obtusifolius, L., conglomeratus, L., 
pulcher, L., Fiddle-Dock, crzspus, L., sanguzneus, L., 
nemorosus, L., distinguished largely by the form of the 
enlarged inner sepals in fruit, and by the presence or 
absence of callosities on them. The Water-Docks :— 
R. aquaticus, L., and Hydrolapathum, Huds., with very 
large leaves; RK. maritimus, L., and palustris, Sm., in 
marshes and by sandy shores of lakes. The Sorrels:—R. 
Acetosa, L.,and Acetosella, L., Sheep’s Sorrel, plants with 
very acid glabrous cordate-hastate leaves, in meadows. 
2, Oxyera, LL. 
Resembling Rumex, but sepals 4; stigmas 2. 
O. digyna, Hill. (ventformzs, Hook.), Mountain Sorrel 
(Pl. 104); stem 6-18 in., nearly leafless, flowers in 
whorls, forming a slender lax raceme, fruit with broad 
wings, red when mature, radical leaves reniform, glab- 
rous, on long stalks; wet rocks at a high elevation, 
common. 
