446 F CEAE 
callosities. Stamens 6.  Stigmas peltate, 
tufted. Achene exserted, granular, the angles 
not margined. One species in many forms. 
1. A. Acetosella (L.) Small. Plant E 
l- 6. 2 tall: blades of the lower leav 
e hastate, the auricles ida pa 
meee sepals een, o or reddish, those of 
the pistillate flowers becom noe 1 mm. ong: 
a i led 0 
OW-SORREL. HORSE-SORREL. UR- 
GRASS. SOU UR-DOCK.)—Sterile soil, roadsides, 
fields, meadows, pastures, and waste-places, 
throughout U. S. and Can., except the extreme 
N and S. Nat. of Eu.— (Almost cosmop. )— 
Spr.—fall. 
3. RUMEX L. Annual or perennial fleshy herbs. Leaves alternate, with 
brittle ocrea Flowers in panicles, perfect, polygam or dioecious, the 
hypanthi eae conspicuously jointed to the edicel. poen green, 6, un- 
equal' or the 3 inner Mni wings, one or all of which usually bear a 
callosity or bien recle. Stamens 6. Stigmas RN tufted. Achene exserted or 
i istae ooth or canis usually more or less margined.—About 140 species, 
wide geographic distribution.— The foliage of some species is eaten as 
er i. »—Doc 
Flowers dioecious : lower leaves with hastate blades : plants vin I. HASTATULI. 
Flowers perfect 2 andro-polygamous: leaf-blades not hastate 
plants not ae 
Mature inner SEDIS (wings) entire, undulate or toothed, not 
Spinulose-margined. 
SE broad, ovate, deltoid, or somewhat reniform 
II. CRISPI. 
Sepal- P narrow, elliptie to pandurate, or elliptic- ae 
ov AN 
Mature inner sepals” (wings) spinulose-margined. I Rr 
I. HASTATULI 
Perennial dioecious plant with horizontal rootstocks: panicle 
naked. 1. R. hastatulus. 
Pedicel- e hypanthium-base short, usually about as long as 
the sepal-wings or shorter, spreading or recurved. 
Only one sepal-wing bearing a tubercle. 2. R. altissimus. 
All three sepal-wings bearing eee : 
Leaf-blades flat, dis edges not crisped. 3. R. Berlandieri. 
Lea f-blades crisp 
Sepal-wings leltoid, ovate-deicoid or hastate. 
Sepal-wings round-ovate. 4. R. crispus. 
KESICE like Boa base elongate, much longer than the 
al-wings, deflexed. 
Leaf-blades broad, short, broadly rounded or cordate at 
e base: sepal-wings 'denticulate. 5. R. fascicularis. 
PA narrow, elongate, oo narrowed at the 
base: sepal-wings undula 
Sepal-wings reniform 6. R. floridanus. 
Sepal-wings ovate, hastate, or reniform-hastate. 7. R. verticillatus. 
III. S NEI 
Only one sepal developing a tubercle: whorls of the inflores- 
cence not leafy-bracted. 8. R. sanguineus. 
