GOOSEFOOT FAMILY. 365 



* * PIGWEEDS, etc. Plant mealy or glabrous, never hairy or aromatic. 



-- Leaves narrow, entire or somewhat sinuate-dentate; pericarp easily 

 separating from the seed. 



C. BosciAnum, Moq. From N. Y., W. and S. ; erect, 2, and slender, 

 nearly glabrous; leaves oblong or linear-lanceolate, narrowed into a 

 slender petiole ; flowers in small clusters or solitary. 



-- -i- Leaves broader and (in ours) prominently sinuate or lobed; peri- 

 carp persistent. 



-M- 11 Leaves triangular-hastate. 



C. Bbnus-Henrlcus, Linn. GOOD- KING-HE NET. MERCURY (sometimes 

 degenerated into "MARKERY"). Cult, in some old gardens as a pot 

 herb, and sparingly escaped ; slightly mealy : calyx fully inclosing the 

 fruit, the seed vertical ; leaves triangular and partly halberd-shaped ; 

 flower clusters crowded in an interrupted terminal spike. Eu. 



w *+ Leaves not hastate. 



Plant erect, mostly tall. 



|| Foliage bright green, the leaves thin. 



C. hybridum, Linn. MAPLE-LEAVED P. Waste grounds ; unpleas- 

 antly scented like Stramonium, bright green throughout; the widely 

 branching stem 2-4 high ; the thin large leaves triangular and heart- 

 shaped, sinuate and angled, the angles extended into a few taper-pointed 

 coarse teeth ; racemes in loose and leafless panicles ; calyx lobes keeled. 



C. murale, L. Loosely branched, lower ; leaves rhomboid-ovate and 

 acute, coarsely and sharply unequally toothed ; spikes or racemes diverg- 

 ing ; calyx lobes scarcely keeled. N. Eng., W. and S. Eu. 



II || Foliage more or less white-mealy, particularly beneath, the leaves 

 thickish. 



C. urbicum, Linn. Only slightly mealy, erect-branched, l-3 ; leaves 

 triangular and acute, coarsely and sharply many-toothed; erect spikes 

 crowded in a long narrow panicle ; calyx lobes not keeled. Throughout. 

 Eu. 



C. album, Linn. COMMON PIGWEED, LAMB'S-QUARTERS. One of the 

 commonest of weeds, in all cultivated grounds, and variable ; erect, 1- 

 10 ; leaves rhomb-ovate to lanceolate, at least the lower ones angular- 

 toothed ; spikes dense and panicled ; calyx lobes strongly keeled. Eu. 

 (Lessons, Fig. 386.) 



= = Plant spreading, mostly prostrate on the ground. 



C. glaOcum, Linn. A foot or less high, glaucous and mealy ; leaves 

 sinuate-toothed or pinnatifid, obtuse ; flowers in axillary spiked clusters. 

 Frequent. Eu. 



* * * AROMATIC GOOSEFOOTS. Minutely glandular or pubescent, aro- 

 matic-scented not mealy or scurfy ; the seed sometimes vertical. (I) () 



C. Bbtrys, Linn. JERUSALEM OAK or FEATHER GERANIUJI. Gardens 

 and some roadsides ; low, spreading, almost clammy-pubescent, sweet- 

 scented ; leaves sinuate-pinnatifid, slender-petioled ; racemes loosely 

 corymbed. Eu. 



C. ambrosioldes, Linn. MEXICAN TEA, WORMSEED. Waste grounds, 

 especially S.; rather stout, smoothish, strong-scented ; leaves oblong or 

 lanceolate, varying from entire to cut-pinnatifid, nearly sessile ; spikes 

 dense, leafy or leafless. This, especially the more cut-leaved and elon- 

 gated-spiked var. anthelminticum, Gray, is used as a vermifuge, and 

 yields the wormseed oil. Trop. Amer. 



