96 
ILLECEBRACEiE. 
ANYCHIA, Michx. Forked duckweed. 
881. A. diehotoma, Michx. 
Woods and shaded places; not common. June — July. (B.) 
832. A. capillacea, D C. 
A, clichotoma, Michx., var. capillacea, Torr. 
Chicago, July 25th, 1877, — University of Chicago Herb. Near River- 
side. (B. P.) 
Grows in drier soil than the foregoing species. 
AM AR ANT ACE-SE . 
AMARANTHS, Tourn. 
833. A. retroflexus, L. Pig-weed. Red-root. Amaranth. 
Old gardens and cultivated fields ; common. July — September. 
834. A. albus, L. White Pig-weed. Tumble-weed*. 
Sandy soil near the lake shore, southward; infrequent Western 
portion of our district more common. 
A form with reddish stems and calyx; leaves small and prominently 
mucronate, is reported from Englewood by Prof. Hill. 
835. A. spinosus, L. Thorny Amaranth. 
Eaxolus spinosus , Feay. 
Introduced sparingly near Union Stock-yards, Babcock. Prairies 
near the corner of Halsted and 55th Sts., along the railroad, 1884. 
ACNIDA, Mitch. 
836. A. tuberculata, Moq. Water-hemp. 
Montelia tamariscina, Gray, in part. 
Along the lake shore; rare. August — September. 
Desplaines river, Babcock. 
t 
CHENOPODIACEJE. 
CYCLOLOMA, Moq. 
837. C. platyphyllum, Moq. Winged Pig weed. 
Near Grand Crossing on banks of I. C. R. R. and North Chicago; 
rare, Babcock. Sandy borders of C. R. I. & P. R. R., Normal 
Hill! South Evanston, Johnson. 
*The name tumble-weed is more applicable to the plant when growing on the 
plains. It has its origin in the following habit, which may be witnessed, to some 
extent, within our limits: “It grows in a globular form, often 3 to 4 feet in 
diameter. When killed by frost, the branches remain rigid, the plant soon 
loosens from the soil, and the wind drives it bounding over the fields and prairies, 
until brought up in some fence corner. * * * This is an effective method of 
scattering the seed.” — J. C. Arthur. 
