ORDER 105. CHKXOPODIACKS. 013 



bright-green ; rac. strict, spike-like, leafless ; seed shining, margin acute ; fruit 

 partly inclosed. ( Gardens, waste grounds, rare. (C. acutifolium Sm.) Plant 

 smooth, pale green or purplish, If or more high. Calyx minute, lobes obtuse, at 

 length spreading and the fruit naked. Eur. 



2 C. hybridum L. Erect, much branched : Ivs. petiolate (ample), broad, subcor- 

 date, acuminate, deeply sinuate-angled, thin, glabrous, bright green, the terminal 

 lobe longest, all acuminate, upper deltoid ; rac. diffusely panicled, loose, leafless ; 

 seed rugous, dull ; fr. partly inclosed. 'T> A strong-scented, rigid herb, 2 to 4f 

 high, ia waste grounds, N. Eng. to Ky., common. St furrowed. Lvs. partly 

 palmate-veined, 3 to 5' by 2 to 4', potiole 1 to 2'. Fls. sessile, greenish. Jl. 

 g Eur. 



3 C. murale L. Ascending, sulcate- angled, branched; Ivs. petiolate, ascending, 

 ovate-rhombic, acute at base, unequally and acutely toothed, thin, shining, bright 

 green ; rac. divaricate, sabcorymbous, rather loose and leafless ; seed dull, rugous, 

 acute-edged, very flat: fr. almost inclosed. (T) Fields, gardens, north and south, 

 rare. St. 12 to 18' high. Lvs. 2 to 3' by 1' to 18", subtripliveined, petiole 1'. 

 Fls. mealy. Stam. exserted. Aug. Eur. 



4 C. urbicum L. 3. RIIOMBIFOLR-M. Erect angled, branched; lus. petiolate, 

 ascending or erect, rhombic-triangular, acute, sinuate- toothed, with long, acute teeth, 

 thin, green, the highest lance-linear, subentire; rac. long, erect-panicled, rather 

 dense-flowered, nearly leafless ; seed shining, obtuse-edged; fr. parth- inclosed. (T, 

 St. 2 to 3f high, marked with green lines ; branches suberect. Lvs. 2 to 3' long. 

 Rac. very strict. Gal. lobes obtuse, green. Stam. exserted. (C. rhombifolium 

 Muhl.) 



5 C. Bosciarmm Moq. Erect, branched; Ivs. small, petiolate, divaricate, lance- 

 linear, very acute, thin, entire, glaucous-green above, canescent beneath ; spikes 

 loose, leafy ; seed shining, acute-margined ; fr. wholly inclosed. TT Car. to Tex. 

 St. 18' to 2f high, slender, grcen-striate, branches ascending. Lvs. 5" to 1' long, 

 1 to 2" wide. Fls. minute, mealy, sessile. 



6 C. album L. PIGWEED. Erect, sulcate-striate, thinly branched; Ivs. petio- 

 late, ascending, rhombic-ovate, cuneate at base, sinuate-toothed or subentire, thin, 

 pulverulent, pale green or whitish, upper oblong or lance-linear, entire; rac. dense 

 or loose, subpaniculate, nearly leafless ; seed smooth and shining, acute-edged, 

 i"holly inclosed. (T The most common of weeds in fields and gardens. St. 2 to 4 

 to 7f high, beautifully striate with green and purple. Branches subsimple, as- 

 cending. Lvs. 18 to 30" long, petiole a third as long. Fls. mealy. JJ. Sept. 

 (0. viride L., a greener, narrow-leaved var.) 



7 C. glaucTixn. L. Prostrate or ascending, sulcate-striate, branched ; Ivs. petio- 

 late, oblong or ovate- oblong, obtuse, sinuate-angled or remotely dentate, thin, pale 

 green above, mealy and white-glaucous beneath; rac. simple, leafless, rather 

 dense-flowered; seed shining, acute-edged, partly iuc'o cu. T Mass., Penn., rare. 

 Plant somewhat fleshy, If long, smooth. Lvs. 1 to 2 long. Calyx sometimes 

 abortively 2 or 3-lobed, and then the seed is erect (Koch.) 



8 C. ambrosioides L. MEXICAN* TEA. Erect, sulcate, branched; Ivs. short- 

 petioled, ascending, oblong, the upper attenuate at each end, acutish, remotely 

 sinuate-dentate or subentire, thin, puberulent, glandular beneath, light green, the 

 upper lance-linear, very entire ; rac. spike-like, dense-flowered, leafy ; seed 

 smooth and shining, obtuse-edged ; fruit wholly inclosed. 1 "Waysides, waste 

 places. Plant yellowish green, pleasantly aromatic, 1 to 2f high. JL, Aug. 

 Mex. &c. 



9 C. anthelmfnticnm L. WORM-SEED. Erect angular, subsimple; Ivs. ovate- 

 oblong, petiolate, acute, attenuate at base, deeply sinuate-serrate^ the fewer almost 

 pinnaiifid, thin, smoothish, glandular beneath, bright green; rac. spike-like, axil- 

 lary, subsimple, dense- flowered, leafless, paniculate above ; sty. mostly 3 ; seed 

 smooth, shining, obtuse-margined; fruit wholly inclosed. 1 In light soils, pas- 

 tures, and waste grounds, common south and west. Plant strongly aromatic, 1 

 to 3f high, with small branches (or none), forming a leafy panicle of leafless 

 spikes. Jn. Aug. 



10 C. Botrys L. OAK OF JERUSALEM. Erect, sulcate-angled, much branched; 

 Ivs. long-petioled, ascending, oblong, obtuse, sinuate-subpinnatifid with obtuse 



