133 
Moist prairie land and along margins of thickets, Western Texas {Lind- 
heimer, Wright, Thurber, Bigelow, Palmer). FI. July to September. 
The whole plant is said to exhale a strong odor of carrot. 
55. BERULA Koch, Deutsch. FI. ii. 455.—Smooth aquatic 
perennial, with simply pinnate leaves and variously cut leaflets, 
usually conspicuous involucre and irivolucels of narrow braets, and 
white flowers. 
Bentham & Hooker refer this genus to Sium, but it is very properly 
restored in Bot. Calif, i. 2(>0. 
1. B. angfustifolia Koch, 1. c. Erect, to 3 feet high or 
even smaller: leaflets 5 to 9 pairs, linear to oblong or ovate, serrate 
to cut-toothed, often laciniately lobed, sometimes crenate, ^ to 3 
inches long: umbel many-rayed; rays 2 inches long or less ; pedi- 
cels 2 to 3 lines long: fruit scarcely a line long. (Fig. 158.) — 
Slum august I folium L. 
Throughout the United States and Mexico, but not abundant; common 
in Europe. FI. July and August. 
The size and foliage of this species are excessively variable. 
56; .KGOPODIUM Linn. Gen. n. 368.^-A coarse glabrous 
perennial, with creeping rootstock, biternate leaves, sharply 
tqothed ovate leaflets, and rather large naked umbels of white 
flowers. 
JE. Pod ACiRARiA L., a common and troublesome weed in 
Europe and Russian Asia, is sparingly introdueed Into this coun- 
try, having been reported by Darlington in his Flora Cestrica', 
by Addison Brown (August, 1877) and others as occurring along 
roadsides at Wcodside, Long Island; by A. Commons from New- 
ark, Delaware; by W. W. Bailey, near Providence, R. I.; and by 
several collectors in the vicinity of N. Y. City. (Fig. 159.) 
57. BOWLESIA Ruiz k Pav. Prod. FI. Peruv. 44. t. 34. 
— Slender branching annuals, with stellate pubescence, opposite 
simple (lobed) leaves, scarious lacerate stipules, and simple few- 
flowered umbels of white flowers on axillary peduncles. 
Our generic characters are drawn chiefly from our own species, and do 
not entirely apply to all the South American forms. 
1. B. lobata Ruiz k Pavon, FI. Peruv. iii. 28. Weak, 2 
inches to a foot or two long, dichotomously branching: leaves 
