286 ORDER 106. CHENOPODIACE.E. 



horizontal, 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-ptibcrulcnt, green, aromatic. Embryo a half ring. . .(6) 



* Herbage glaucous or whitish, covered with mealiness Nos. 13 



* 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, 



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

 rare. If. Leaves 1 2', 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. (I) 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. polyspermum L. Ascending, branched from base; Ivs. ovate to oblong, en- 



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



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. murale L. Ascending; leaves ovate-rhombic, acute at base, unequally and 



acutely toothed ; seed acute-edged, dull-rugous. (T) Rare. 1218'. 



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



dense, in an erect narrow panicle ; seed blunt-edged, shining. (T) 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. aiithelmiuticum L. Worm-seed. Subsimple ; leaves ovate-oblong, deeply 



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

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



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

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

 strongly aromatic of turpentine. 



5. ROUBLE V A, Moq. Calyx 5-toothecl. Sta. 5. Styles and stig. 8. 

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

 Pubescent, much branched. Leaves pinnatifid. 



K. mn It i tUla Moq. Roadsides about New York. Prostrate and ascending. 1 2f. 

 Flowers minute, in numerous panicled racemes. Leaves V. 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. Boiius-Henrlcus Reich. Goo. i 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; 



Ktamen 1 : seed shining. Marshes 1 , R. T., N. Y., and N. J. 1 2f. August. 



3 B. capitatuiu L. Siraivberni 11. branched ; leaven triangular-hastate; glomer 



ale fruit middled like ptrnyvlxrrrie*, insipid. Va . and N. l--2f. June. 



