Polygonace*. 
333 
88. Polygonacese. 
491. Rumex. Dock. VI, 37. XXII, 28. 
1. Ls hastate or sagittate (with an acid flavour); in R. ni¬ 
valis scarcely hastate, but fls dioecious (false whorls 
without ls) ....... 2 
— Ls neither hastate nor sagittate. Fls gen. hermaphrodite, 
rarely polygamous 6 
2. Fls polygamous (hermaphr. and male fls on the same 
pb). Ls about as broad as long, gen. glaucous. R. glaucus 
Jacq. (a robust, very glaucous form).—Stony places and 
detritus on the Alp., subalp. and Jura, also, through 
former cultivation, on walls at a lower elevation. 6 
scutatus L. 1889. 
— Fls dioecious ........ 3 
3. Inner divisions of the fr.-perianth thick-scarious, in¬ 
distinctly net-veined, not larger than the fr., with no 
callosity; outer divisions of the perianth erect-applied. 
Stem 5—30 cm. —Fallow, wood-clearings, peat-mosses; 
distrib. 5.Acetosella L. 1890, 
— Inner divisions of the fr.-perianth membranous, thin, 
strongly net-veined, much larger than the fr.,*with a short 
callosity at the base; outer divisions of the perianth re¬ 
flexed ......... 4: 
4. Stem 5—10 cm, leafless or with 1—2 1s. Ls rather thick, 
with obtuse or indistinct auricles.—Detritus on the high 
Alp., on limestone; eastern Switz. and O. 8 
nivalis Heg. 1891. 
-— Stem 30—90 cm, leafy. Ls with distinct auricles . 5 
5. Ls thin, distinctly nerved, the lower obtuse. Auricles 
spreading outwards. L.-sheaths entire, short.—Alp., sub¬ 
alp. and Jura. 7 arifolius All. 1892. 
— Ls rather thick, with less distinct nerves, acute. Auricles 
directed downwards (almost parallel to the petiole). 
L.-sheaths laciniate, longer than in the last.—Meadows, 
pasturages; everywhere. 5 . . Acetosa L. 1893. 
6 (1). Inner divisions of the perianth distinctly toothed 7 
— Inner divisions of the perianth entire or with unapparent 
teeth. 11 
7. Ann. or bienn. pis. Ls all, the lower also, narrowed to 
the petiole. (False whorls many-fld, all supported by ls) S 
— Perenn. pis. Lower Is with rounded or cordate base to 
8. Teeth of the inner divisions of the perianth setaceous, 
longer than the breadth of the divisions. Upper false- 
whorls confluent. Ls linear-lanceolate. PI. tinted with 
golden yellow when mature.—Marshes, edges of ponds; 
