AMMIACEAE 975 
obovate, 1-1.5 mm. long: fruit conic- oy about 4 mm. long.—(GOUTWEED.) 
— Waste- places, merase. and thickets, N. C. to Pa. and Mass.—Nat. of Eu.— 
um.—A form with variegated ee ‘is used in Seni g. 
20. EULOPHUS Nutt. Perennial herbs with tuberous roots. Leaf-blades 
ternately compound. Umbels compound.  Involuere wanting or of 1 bract 
Involucels usually of 2 bracts. Sepals promi- | 
nent. Petals white or pink, broadest above 
the middle, inflexed at the tip. Fruit some- 
what elongate, laterally flattened: carpels 
delicately ribbed: oil-tubes 2-5 in the inter- 
vals.—About 8 species, North American. 
E. americanus Nutt. Plant 8-15 dm 
fruit elliptic or elliptic- -ovoid, 4-6 mm. 
long.—Low grounds, various ee Tenn, 
to Ark., Kans. and Ohio.—Sum 
21. CICUTA L. Perennial herbs with tuberous roots. Leaf-blades pin- 
nately compound or decompound. Umbels compou Involucres of few 
bracts or wanting. Involucels of several small Ene Sepals acute. Petals 
white. Fruit short: carpels with 5 corky ribs, and one oil-tube in each interval 
and 2 in the inner faee.—About 8 species, of the North-temperate zone.— 
dir cc ee roots are poisonous. 
Fruit ridged at the commissure, typically oval or ovoid. 1. C. maculata. 
mos a ed at the commissure, typically subglobose or reniform- 
lobos 2. C. Curtissii. 
. C. maculata L. Plant Stout, 1-2 m. tall: leaf-blades 1-6 dm. long, the 
veins ending in the notches of the segments: fruit with lateral ribs ‘manifestly 
much larger than the others and wedge- 
i 
low-gr oe and river- dap various prov- 
inees, Miss. to Tex., Man., Ont., N. B., and 
N. C. 
2. C. C i nen Es It. & Rose. Plan 
sembling C. lata, but lbs pus and 
more S ME leaf-segment with 
apparently equal ribs, the ‘ateral ones 
neither wedge-shaped tiguous.— 
He ME nd low grounds, PUE Plain and 
adj. provinces, Fla. to La., Tenn., (Ky. 4), 
and Va., also represented "by sporadic sta- 
tions as far North as Nova Sco 
22. SIUM [Tourn.] L. Perennial herbs. Leaf- p ns Essi in com- 
pound. Umbels compound. Involucres and involueels of narrow bracts and 
bractlets. Sepals small, acute. Petals white. Fruit stout, scat: laterally 
