^Q ClIENOrODIACl'LK. 7e/a.-//,v. 



3. TELOXYS, Mo.iuin. 



Flowers perfect or sometimes pistillate, without bracts. Periantli 5- (rarely 4-) 

 parted; the lubes more or less prominently carinate or somewhat crested, loosely and 

 only partially covering the fruit. Stamen solitary. Styles 2, distinct or united at 

 base. Pericarj) membranous. Seed horizontal, with a crustaceous testa. Embryo 

 annular around copious albumen. — Erect dilfusely branched annuals, with thin alter- 

 nate leaves, and minute solitary flowers, very shortly pedicelled, axillary and termi- 

 nal upon the repeatedly dichotomous nearly naked branches. 



Only three species, of Nortlieni Asia, central North America, and the Bolivian Andes, 

 re.s|«'ctively. 



1. T. COrnuta, 'rmrey. Glabrous or somewhat glandular-puberulcnl, I to U 

 feet high, slender : leaves lanceolate, an inch or two long, repand-dentate or coarsely 

 sinuale-pinnatihd : calyx resinous-dotted, the acute loljes carinate with a short thick 

 crest: seed \ of a line broa.l. — Pacif. 11. Rep. iv. 129 ; AVatson, 1. c. 91. 



Near Prescott, Aiizoim {Pabner), and jjrobal.ly ianj,'ing into S. E. California, thence to Colorado 

 and Northern Mexico. 



4. CHENOPODIUM, Tonrn. Coomckoot. Picwkko. 

 Flowers perfect or sometimes pistillate, without bracts. Perianth herbaceous, 

 5- (rarely 3-4-) parted; lobes usually somewhat carinate or crested, becoming dry 

 and more or less closely covering the fi uit, or rarely at li-ngth lleshy. Stamens 5 or 

 fewer. Styles 2, rarely 3 or 4, slender. Pericarp membranous, closely investing 

 the lenticular or subglobose horizontal or vertical seed. Testii crustaceous. Em- 

 bryo annular or curved around cojiious albuiuen. — Annuals, rarely perennial ; many 

 of them introduced weeds, usually more or less whiti--mealy or glanduhir ; leaves 

 alternate, petioled ; ilowers sessile and clustered, in axillary or terminal interrupted 

 spikes or panicled. — litittim, Tourn. 



A widely distril)uted genus of about 50 species, .some of them among tlie most common weeds 

 in almost all countries. ° Eight or nine s))ecies are native to the interior and southern portions of 

 the United States. The limits of the genus, as distinct from Ji/ititiu, are very vague, and vari- 

 ouslv drawn. Any division based ui)on the variable i.osilion of the seed and consistence ot the 

 calyx appears to be unsatisfactory, and it has seeni..l be.-,t to include all our species m the one 

 genus. 

 § 1. Annual, vsitaUi/ sowewhat ineahj, hut not jmhcsrent or fjlamluhir, nor aro- 



viatie. : fraiiuKj rafi/.r. dry : seed lentlndar, liorhontdl : emhrijo completeli/ 



annulm: — ( 'ihaoi-ddiastuu.m, Mo(|uiii. 

 ^^ Pericarp closc/i/ persistent : Icares more or less sinnate-dentate : seed lanjo 

 (^ line broad). 



1. C. album, Eiun. Erect and often .strict, usually 2 to 4 feet high, simple or 

 branched, more or less mealy : leaves rhombic-ovate, 1 to 3 inches long, obtuse or 

 acute, at least the lower ones sinuate-dentate, the upjjcr usually entire and laiiceolato 

 to linear : flowers densely clustered in usually close spikes, the panicle strict and 

 close or somewhat spreading : sepals strongly carinate, nearly or quite covering the 

 fruit : seed | to nearly a line broad. 



A common weed, introduced everywhere, originally fi'oni the Old World ; usually known as 

 "Pigweed "or " Lamb's Quarters." The var. viride, less mealy and with more open inllores- 

 cence, is less prevalent on the western coast than eastward. 



2. C. murale, Einn. Stout, erect or decumbent, a foot or two high, more or 

 less mealy : leaves broadly rhomboidal or triangular to laiicrolate, 1 to 4 inches 



