9a. Flowers in small heads, in the axils or in terminal spikes; leaves sinuately toothed or nearly entire =Strawberry Blite, Chenopodium capitatum.= 9b. Flowers in terminal panicles; leaves sharply toothed (Goosefoot) --10. 10a. Panicles short, not as long as the subtending leaves =Goosefoot, Chenopodium murale.= 10b. Panicles long, exceeding the subtending leaves --11. 11a. Calyx green =Goosefoot, Chenopodium urbicum.= 11b. Calyx red =Goosefoot, Chenopodium rubrum.= 12a. Foliage glandular and strongly aromatic --13. 12b. Foliage not glandular nor aromatic; sometimes ill-scented --15. 13a. Flowers in large loose open spreading panicles; leaves deeply pinnatifid =Jerusalem Oak, Chenopodium botrys.= 13b. Flowers clustered in slender axillary or terminal spikes --14. 14a. Spikes dense, leafy =Mexican Tea, Chenopodium ambrosioides.= 14b. Spikes open, nearly leafless =Wormseed, Chenopodium ambrosioides var. anthelminticum.= 15a. Stem erect, 5-20 dm. tall; leaves frequently white-mealy =Lamb's Quarters, Chenopodium album.= 15b. Stem prostrate or ascending, succulent; leaves glaucous-white beneath =Goosefoot, Chenopodium glaucum.= 15c. Stem widely and diffusely branched; leaves green, soon deciduous =Cycloloma, Cycloloma atriplicifolium.= AMARANTHACEAE, the Amaranth Family Herbs, with alternate leaves, and inconspicuous greenish or reddish flowers without petals, which are axillary or in dense clusters, blooming in summer. 1a. Flower-clusters axillary --2. 1b. Flower-clusters in terminal spikes or panicles, sometimes also axillary --3. 2a. Plant prostrate or decumbent; seed about 1.5 mm. broad =Pigweed, Amaranthus blitoides.= 2b. Plant erect or ascending, widely branched; seeds about 1 mm. broad (3-10 dm. high) =Tumble Weed, Amaranthus graecizans.= 3a. Principal leaves with a pair of spines at their base =Thorny Amaranth, Amaranthus spinosus.= 3b. Spines none at the base of the leaves --4. 4a. Weedy plants of cultivated or waste ground; flowers monoecious or polygamous; pistillate flowers with a calyx (Pigweed) --5. 4b. Plants of swamps or stream-banks; flowers dioecious; pistillate flowers without calyx (Water Hemp) --7. 5a. Spikes short, 1-8 cm. long, crowded in dense ovoid panicles; the terminal spike not conspicuously elongated beyond the appressed or ascending lower ones =Pigweed, Amaranthus retroflexus.= 5b. Spikes slender, 1-12 cm. long; the terminal spike greatly exceeding the short inconspicuous divergent lower ones --6.