286 ORDER 106 CHENOPODIACE^E. 



horizon tal, lenticular. Weeds often glaucous or glandular, with alternate. 



often rhombic Ivs., and the minute fls. in panicled spikes. June Aug. 

 Plants ill-scented, smooth, never glandular. Embryo a complete ring. . .(*) 

 Plants glaudular-puberulent, green, aromatic. Embryo a half ring. . .(&) 



* Herbage glaucous or whitish, covered with mealiness Nos. 1 3 



* Herbage green, rarely purplish, not glaucous or mealy., .(a) 



a Leaves entire, ovate-oblong, on slender petioles No. 4 



a Leaves toothed or lobed, petiolate Nos. 5 7 



b Flowers glomerate, axillary, in spike-like racemes Nos. 8, 9 



b Flowers cymous, innumerable, in long raceme-like panicles No. 10 



1 C. glaucum L. Prostrate or ascending, branched ; leaves ovate to oblong, obtuse, 



sinuate-angled or -dentate ; racemes simple ; seed partly enclosed, (i) Mass, to Pa. : 

 rare. If. Leaves 12', whitish beneath. Europe. 



2 C. album L. Common P. Erect, loosely branched, striate ; Ivs. rhombic ovate, 



sinuate-toothed to subentire ; racemes some panicled ; seed wholly enclosed. (5) The 

 commonest of weeds, '2 7f, often striped with purple. 



3 C. Boscianum Moq. Erect, branched; Ivs. small, lance-linear, entire, canescent 



beneath : seed partly enclosed. (T) Shades, Pa. (Prof. Porter), and S. 2f. 



4 C. poly sperm um L. Ascending, branched from base; Ivs. ovate to oblong, en- 



tire, bright green ; racemes spike-like, strict ; fruit partly enclosed. Rare. Eur. 



5 C. hybridum L. Leaves ample, subcordate, deeply sinuate-angled, with pointed 



lobes ; racemes leafless ; seed rugous, dull. (T) Common, 2 4f. Europe. 



6 C. in u rale L. Ascending; leaves ovate-rhombic, acute at base, unequally and 



acutely toothed ; seed acute-edged, dull-rugous, (i) Rare. 12 18'. 



7 C. urbicum L. Erect; leaves as in No. 6, but slightly mealy; racemes strict, 



denee, in an erect narrow panicle ; seed blunt-edged, shining. (D 2 4f. 



8 C. ambrosioides L. Mexican Tea. Branched; leaves oblong to lance-linear, 



attenuate both ways, sinuate-toothed to entire ; spikes dense, leafy, seed shining, 

 obtuse-edged ; fruit wholly enclosed. (T) 1 2f. Mexico. 



9 C. aiithclminticum L. Worm-seed. Subsimple; leaves ovate-oblong, deeply 



sinuate-serrate or pinnatifld ; racemes spike-like, long ; styles mostly 3 ; fruit as in 

 No. 8. U Waste grounds. 1 3f. Mexico. 



10 C. Botrys L. Oak-of- Jerusalem. Leaves oblong, obtuse, sinuate-subpinnatifid ; 

 branches strict, panicles slender, spirally twisted. Sands, &c. 1 2f. Plants 

 strongly aromatic of turpentine. 



5. ROUBIEVA, Moq. Calyx 5-toothed. Sta. 5. Styles and stig>. 3. 

 Seed lens-shaped, quite vertical, enclosed in the veiny rugous calyx. U 

 Pubescent, much branched. Leaves pinnatifid. 



R. multifida Moq. Roadsides about New York. Prostrate and ascending. 1 2f. 

 Flowers minute, in numerous panicled racemes. Leaves I'. S. America. 



6. BLITUM, Tourn. ELITE. Calyx 3-5-sepalled, mostly becoming 

 juicy and berry-like in fruit, enclosing the utricle. Sta. 1 5. Styles 2. 

 (D Leaves petiolate. Flowers glomerate. 



Heads forming a dense terminal spike. Calyx dry No. 1 



Heads axillary, some spicate above. Calyx thickened Nos. 2, 3 



1 B. Bonus-Henricus Reich. Gooi King Henry. Subsimple, ascending, mealy; 



leaves triangular-hastate ; stamens 5. Waysides, N. : rare. Europe. 



2 B. maritimum N. Much branched; leaves lanceolate, attenuate to both ends; 



stamen 1 ; seed shining. Mur*het?, R. L, N. Y., and N. J. 1 2f. August. 



3 B. ca.pita.tum L. Strawberry B. Crunched; leaveH triangular-hastate ; glomer 



ate fruit reddened like strawberries, insipid. Va., and N. l--2f. June. 



