CIllCXOl'OUlACEAE. 



Vol U. 



13. Chenopodium Bonus-Henricus L. Good 

 Kiiif^ IIliu)-. rci\iiiiiaUiouhclout. Fig. 1689. 



ChcnopodiiDii Bonus-IIcnvicus L. Sp. PI. 218. 1753. 

 Btituiii Bonus-Henricus Reichb. Fl. Germ. Exc. 582. 

 1830-32. 



Perennial liy a thick rootstock, glabrous, dark 

 green, not mealy; stem erect, usually stout, simple 

 or little branched, channeled, l-2i tall. Leaves 

 liroadly triangular-hastate, palmately veined, entire 

 or undulate (rarely witli i or 2 small teeth), the 

 apex and basal lobes usually acute, the lower long- 

 petioled (petiole often twice as long as the blade), 

 the upper much smaller and short-petioled ; flowers 

 in terminal and axillary, simple or panicled, com- 

 monly dense spikes sometimes z'-A' long; calyx 4- 

 S-parted, the segments not longer than the fruit ; 

 styles elongate ; seed vertical, or that of terminal 

 flowers horizontal, black, shining, blunt-edged ; 

 embryo a complete ring. 



_ In waste places. Nova Scotia and Ontario to Massa- 



chusetts and southern New York. Naturalized from Europe. All good. English mercury. Wild 

 spinach. Fat-hen. Roman plant. Elite. Mercury-goosefoot. Smiddy-leaves. Markery. June-Sept. 



14. Chenopodium Botrys L. Feather Geranium. Jerusalem Oak. Fig. i6go. 



Chcnupodiuin Botrys L. Sp PI. 2ig. 1753. 



Annual, green, glandular-pubescent and viscid, 

 strong-scented ; stem slender, erect, simple or 

 branched, 8-2 tall. Leaves ovate or oblong, deeply 

 and usually irregularly pinnately lobed, acute or 

 obtuse at the apex, petioled, -2' long, or the upper- 

 most much smaller, the lobes mostly obtuse and 

 dentate; flowers in numerous loose axillary cyinosc 

 panicles mostly longer than the leaves; calyx 

 3-S-parted, the segments lanceolate, acute, thin, 

 very pubescent, rather longer than the utricle; seed 

 horizontal or vertical, firmly attached to the peri- 

 carp ; embryo an incomplete ring. 



In waste places. Nova Scotia to Minnesota and Wash- 

 ington, southeastern New York, Kentucky and Mexico. 

 Naturalized from Europe. Native also of Asia. The 

 leaves fall in autumn, leaving the panicles as narrow 

 naked wands. Turnpike-geranium. Hindheal. Ambrose. 

 July-Sept. 



Chenopodium incisum Poir., of tropical America, 

 with pulieruknt flowers and acute leaf-lobes is reported 

 as established in Maine. 



15.^ Chenopodium ambrosioides L. Mexican Tea. Fig. 1691 



Chenopodium ambrosioides L. Sp. Pi. 219. 1753. 

 Chenopodium anthelminticum L. Sp. PI. 220. 1753. 

 Clienopojium ambrosioides var. anthelminticum \. 

 Gray, Man. Ed. 5, 408. 1867. 



Annual or southward perennial, glabrous or 

 slightly glandular-pubescent, green, not mealy, 

 strong-scented, stem inuch branched, ascending 

 or erect, leafy, 2-t,1 high, angular and grooved. 

 Leaves ovate, oblong, or lanceolate, obtuse or 

 acute at the apex, petioled, repand-dentate, undu- 

 late, coarsely dentate, incised, or the upper en- 

 tire, I'-s' long, the upper numerous and much 

 smaller; flowers in small dense axillary often 

 leafy spikes, mostly shorter than the subtending 

 leaves ; calyx usually 3-parted. completely en- 

 closing the fruit ; pericarp readily separable from 

 the seed; seed horizontal or vertical, shining; 

 embryo an incomplete ring. 



In waste places. Maine and Ontario to Florida, 

 west across the continent to California. Natural- 

 ized from tropical America. Introduced as a weed 

 also into southern Europe and Asia. Consists of 

 numerous races, the spikes leafy to leafless. Aug.- 

 Oct. 



