276 
4. Chenopodium L. Se osefool ; 
Annual or perennial herbs with rather fleshy alternate leaves which 
are commonly green and glabrous or frequently white mealy or glandular 
pubescent. Flowers very small, green, sessile, perfect, borne in small 
clusters, the clusters axillary, often panicled. fPerianth 2-5 parted. 
Stamens 1-5. Utricle enclosed by the persistent often herbaceous or 
fleshy perianth. Mostly introduced weeds. Ce capitatum rather showy. 
O Plants glandular-viscid throughout; leaves pinnately 
Oo Plants glabrous or mealy, not glandular; leaves 
4 entire or toothed but not lobed 
2,Plants maly, iee., covered with a whitish meal- 
& like scurf which rubs off readily. 2, Ce album j 
2 Plants glabrous throughout; leaves lightly 
(ocordate or subhastate at base 
i et ine sali 
4 Flowers in dense globose, axillary glomerules, 
8 becoming red and juicy in fruit 3. Ce. capitatum 
4 Flowers in clusters disposed in an open panicle, : 
g (ereen in fruit, the segnents with a scarious i 
margin 4. Ge hybridum ; 
— 
1. CG. botrys L. Jerusalem Oak. Plants 20-50 cm. tall, pale 
yellowish-green, commonly branching from the base, glandular pubescent 
throughout; leaves 1-4 cm. long, oblone, obtuse, truncate at base, the 
margin irregularly sinuately lobed, sugsesting an 0a leaf in some, the 
petiole subequal to the blade, reduced in the upper axils: flowers numerous 
in axillary cymules; perianth 1 mm. long, the segments ovate, somewhat 
shorter than the fruit. 
An occasional weed in waste places; naturalized from surope. 
2. C. album L. Lambs Quarters. —~~=-—>p> Plants 50-60 cm. tall or more, 
pranching above, white-mealy throughout; leaves rather fleshy, 6-4 cm. long, 
ovate in outline, obtuse, cuneate at base, the margin sinuately and irreg- 
ularly toothed or subentire, 5 veins prominent from the base; petioles 1-2 
cme long; lowers in dense clusters, 2-5 mm. in diameter, the clusters panicled, | 
panicles 15-50 cm. long, mealy; mature perianth 1 mm. lons, enclosing the 
dull black vertically compressed utricie. 
as 
A common weed in waste places about dwellins; occasionally along trails; 
naturalized from Surope. 
& er nmovilluom Mot A. age 7 ROt7 7 i 1 3 
ve leptopayllum Nutt. A weed collected at Dubois and | 
jy -enr- Y aye, nes 5 770719 1) ler ay eee 7 NS; Tantraca.: “~ 4. “> 
+ See eS el 6) REO wo lal y LEG USUALLY SntLLITe narrow 1@2Ves; ad onvusr our 
catclicedinaaee e £ ¥ 
