| CHENOPODIACEAE 
Leaves white, mealy. 
Rhomboid . ee ter es Maree 5) eee Ses) BAe (C5, Gi lex ri: 
Lance-egg-shaped, “the borders’ toothed . sk ew we tas le | oi Gna 
Ege-shaped, the borders ‘entire, .)) 0s Ve se cfs) en sre Come en 
Lance-shaped)*.' <: 4) “s,s “swe ie ee eso) -7e a) eee Gc umaenconnnaamre 
Elliptic =. al, APRAT Os, aw ce eae - « « C. polyspermum 
Leaves green, not mealy. 
Narrow, pencrally) lance- rehidped cys, Pollo ye, “el eel giel | vs Ewa CINE OS ERraDaETe 
Rhombic . . ee ee en ee Teh oC! rie 
Feather-formed by deep sinuses. a Ps) fe ep yw e tel tok eat CREDO RS 
Oblong or broad lance-shaped . . . .. . © » « C. ambrosioides 
Egg-shaped . . AG RS hs, A - « « « C. anthelminticum 
Triangular or nearly ‘so. 
Border not toothed or notched . . . . . «. C. Bonus Henricus 
Border with rt to 4 long teeth . . - © « « GC. ybmaun 
Border with a number of indentations or sharp serrations. 
Base of leaf convex, more or less rounded out . . C. murale 
Base of leaf concave, more or less depressed inward C. urbicum 
All annual except No. 10 
1, C. album, L. (Fig. 3, pl. 35.) WuHitTe GoosEroot. PIGWEED. 
Plant smooth; 1 to 10 ft. high. Whole plant more or less mealy-white. 
Leaves, rhomboid with sinuate dentations on the two sides; upper leaves 
narrow to lance-shaped. Stem with alternate green and white or purplish 
and green stripes. Flowers in compact glomerules which are arranged 
in loose, leafy, clusters axillary and terminal. Calyx, with keels at the 
angles, completely enveloping the fruit. Seeds shining black. Embryo 
completely annular. A common weed in cultivated and waste places. 
2. C. glaucum, L. (Fig. 9, pl. 35.) OAK-LEAVED GoosrEroor. Plant 
smooth 4 to 14 ft. high, prostrate or erect. Plant white, mealy. Leaves 
oblong to lance-shaped with deep indentations; teeth rounded, about 4 
on each side; green above, bluish-white beneath: Upper leaves narrow 
and entire. Seed globose, sharp edged, only partly enveloped by calyx, 
embryo annular. Like the former species a common weed. 
3. C. vulvaria, L. Srinxine Gooseroor. Similar to No. 2, but 
leaves are egg-shaped and the margins are without lobes or teeth. In 
situations similar to the last. 
4. C. leptophyllum, (Moq.) Nutt. (Fig. 5, pl. 35.) | Narrow- 
LEAVED GoosEFooT. Plant densely mealy, erect, 4 to 2 ft. high. Leaves 
narrow lance-shaped with entire borders, 4 to 1 in. long. Glomerules 
closely packed about the stem. Sea shore, Connecticut to New Jersey. 
Shores of Lake Erie. 
5. C. polyspermum, L. (Fig. 4, pl. 35.) MANyY-SEEDED GOOSEFOOT. 
Plant smooth, low, spreading or sometimes erect. Leaves elliptic or 
egg-shaped, green, no mealiness. Clusters of flowers leafy; calyx partly 
exposing the fruit. Weed, not very common. 
6. C. Boscianum, Moq. (Fig. 1, pl. 35.) Bosco’s Goosrroot. Plant 
slender, erect (about 2 ft. high), smooth, not mealy or only slightly so. 
Leaves mostly lance-shaped, tapering at each end, the borders not in- 
dented, green on both sides, Flowers in loose leafy clusters on slender 
branches. Calyx nearly covering seed. Woods and thickets, New York, 
New Jersey and south. 
7. C. urbicum, L. Upricur Goosrroot. City Goosrroor. Plant 
erect, 1 to 3 ft. high. Stem striated, green and white. Leaves triangular 
with irregular triangular teeth. Flower clusters leafless or nearly so, tall 
and spike-like, the flower groups crowded against the stem, . Common. 
