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. Bosci&num, 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. (D 



■>- t- Leaves broader and (in ours) prominently sinuate or lobed; peri- 

 carp persistent. 



■w- % Leaves triangular-hastate. 



C. Bbnus-Henrlcus, Linn. Good-King-Henry. 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. 



++ +* (J) Leaves not hastate. 



= Plant erect, mostly tall. 



II 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 pinnatifld, 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. ® © 



C. Bdtrys, Linn. Jerusalem Oak or Feather Geranium. 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-pinnatifld, nearly sessile ; spikes 

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

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

 yields the wormseed oil.* Trop. Amer. 



