CHENOPODIACE.E. (GOOSEFOOT FAMILY.) oOT 



1. KOCHIA, Koth. 



Perianth subglobose. Stamens 5, usually exsertod. Ovary deprwwed. 

 styles 2, filiform. I'ericarp membranous. — Woody at the ba.ne, with MatU'red 

 linear terete leaves, and the flowers solitary or few in the axils «jf tht- virgale 

 leafy stems. 



1. K. Americana, Watson. Branching at ba.se: stem.H vi!lon»toineii- 

 tose or nearly glabrous: flowers 1 to 3 iu the axils, mostly with alHirtjve 

 stamens: perianth densely white-tomentose ; lolics of the memhraiinus wing 

 ouneate-rounded, nerved and somewhat creuulate : ovary toracnto.se alMJve. — 

 Proc. Am. Acad ix. 93. K. proatrata of American authors. W. Wyoming 

 to N. W. Nevada and southward to Arizona. 



2. CYCLOLOMA, Moquin. Wingkd Pigweed. 



Calyx with concave lobes strongly keeled, enclosing the depre.'vsed fmit. 

 Stamens 5. Styles 3. 



1. C platyphyllum, Moq. More or less arachnoid -pnlicsccnt ; whole 

 plant light green or often deep purple. — From Colorado to the head-waters of 

 the Missouri and eastward to the Mississippi. 



3. CHE NO PODIUM, L. Goosefoot. Pigweed. 



Lobes of tlie perianth usually somewhat keeled or crested, becoming drv, or 

 rarely at length fleshy. Styles 2, rarely 3 or 4. Pericarp membranous, clo.«joly 

 investing the seed. — Flowers, when in clusters, in interrupted spikes or pani- 

 ded. Many are introduced weeds. Includes Blituni, Tourn., and Tflon/s, 

 Moquin. 



§ 1. JVot pubescent or glandular, nor aromatic, sometiiues soineuhat tneal;/ : fruit- 

 ing calijx drji : seed lenticular, horizontal. 

 * Pericarp closelij persistent: leaves more or less sinuate-dentate {errejit in 

 No. 1) : seed large (f line hrond).^ 



1. C. Olidum, Watson. Farinose, heavii-scented : hares rather thick, 

 oblong to ovate, often slightly hastate, entire: flowers rather largo, in close 

 clusters rather looselij panicled. — Proc. Am. Acad. ix. 96. New Mexico and 

 Arizona to Colorado and N. Utah. 



2. C. hybridum, L. Glabrous throughout or only the inflorosconco 

 mealy, rather stout and erect : leaves thin, somcu-hat triangular and hcart-shnprd, 

 taper-pointed, sinuate-angled 2cith 2 or 3 large teeth on rarh sid( : rncruirs dif- 

 fusel 11 and looselg panicled : seed with acutish margin. — A very common weed 

 everywhere, but apparently indigenous within our rango in the mountains 

 from New jNIexico and Colorado to Washington. 



3. C. glaucum, L. Glaucous-meal g, lou and spreading: upper surface 

 of the leaves smooth: leaves ovate to oblong-lanceolate, sinuate-drntatc : flomn 

 clustered in axillary spikes shorter than the leaves : seed sharp-edged. — Pro!»a- 



I C. album, L., a species introduced everj'where, is nienly nnd pale, sometlniea pre*n. wlHi 

 leaves varying from rhombic-ovate to lanceolate, all or only the h<\\vv more or leM anij-uUtc 

 toothed. It is usually known as " Pigweed " or " Laujb's (^uarteim." 



