Spring Flora of Oklahoma 
35 
A. Leaves flat; bright or light green, or glaucescent. 
Wings broad, reddish; no tubercles. 
2 R. venosus. 
Wings small, not red, bearing tubercles. 
Tubercles usually 3; Pedicels several times 
longer than the wings. 3. R. verticillatus. 
Tubercle usually 1; pedicels equaling the wings. 
4. R. altissimus. 
B. Leaves wavy-margined or crisped, dark green, not 
glaucesent. 
Wings entire, more or less undulate. 5. R. crispus. 
Wings toothed or fringed. 6 R. obtusifolius. 
1. Rumex Acetosella L. Sheep Sorrel. Annual or perennial, 
glabrous, dioecious, stem slender, erect or nearly so, simple or 
branched, the rootstock woody, horizontal or creeping. Leaves nar¬ 
rowly hastate, obtuse or acute at the apex, the basal auricles entire, 
or 1-2-toothed. Ocreae silvery, 2-parted, soon lacerate. Flowers in 
erect, panicled racemes. Achene less than 1" long, very granular, 
exceeding the persistent calyx, its angles not margined. 
In dry fields and on hillsides. Caddo, Lincoln and Oklahoma 
counties. May-September. 
2. Rumex venosus Pursh. Veined or Winged Dock. Perennial 
by woody rootstocks, glabrous. Stem rather stout, erect, somewhat 
flexuous, 6'-15' tall, grooved and branched. Leaves ovate, ovate-lance¬ 
olate or oblorg, l'-5' long, acute at both ends or acuminate at the 
base, petioled, rather coriaceous. Ocrese funnel-form, thin, brittle. 
Racemes mostly erect. Calyx red, pedicelled, very conspicuously 
winged in fruit. Wings large, broad, suborbicular with a 
deep sinus at the base, veiny, reddish. Achene 3" long, smooth, 
shining, its faces concave, its angles margined. 
Dry soil. Oklahoma County. May-August. 
3. Rumex verticillatus L. Swamp Dock. Perennial, glabrous, 
rather bright green. Stem stout, grooved, erect, ascending or de¬ 
cumbent, 2°-5° long. Leaves narrowly oblong, oblong-lanceolate or 
lanceolate, 2'-12' long, narrowed at both ends or obtusish at the 
apex, slightly papillose, long-petioled. Wings broadly deltoid, 2" 
long, each bearing an ovoid tubercle. Achene 1%" long, reddish, 
pointed, smooth, shining, its faces concave. 
In swamps. Garfield County. May-July. 
4. Rumex altissimus Wood. Tall or Pale Dock. Perennial, 
