406 ciiKXoroDiACE^. (goosekoot family.) 



• EmlTyo coiled into a ring around copious central albumen. Leaves flat, not spiny nor fleshy. 



— Fluwers all alike and |>vrft;ct, or merely pnlypamous by the want of stamens in sume of then, 



clustered or paiiicled. Calyx olividu*. Si;eil-ci)at crustaceous. 



1. Cyclolotna. Calyx 6-cleft, iu fruit s-uirouiided by a horizontal continuous membrana- 



ceous wiiitr. Soed horizontal. 



2. Clui«o|>o«lluiii. Calyx3-5-cKft or parted, the lobes naked or merely keeled in fruit. 



Sred horiz .Mtal, rarely vcrtic.ijV. 



3. Ulltiiiii. Calyx of 3-5 sepals, mostly juicy or fleshy in fruit. Seed vertical. 



— ■>- Flowers monoecious or dioecious, and of 2 distinct sorts ; the stamiuate with a regular 



calyx, clustered, the clusters mostly spiked. 



4. A triplex. Fertile flowers without calyx, enclosed between a pair of appressed bracts. 



..- H- — Flowers all perfect and alike, single in the axil of bracts, naked or 1-sepalled. 



5. Corispermuni. Fruit oval, flattened : pericarp adherent to the seed. Leaves linear. 



* # Embryo narrowly horseshoe-shaped or conduplicate : no albumen. Stem fleshy, jointed -. 



leaves reduced to opposite fleshy scales or teeth. Flowers densely spiked, perfect. 



6 ^allcornia. Flowers sunk in hollows of the axis of the fleshy spike. Calyx utricle-like. 



« » * Embryo coiled into a spiral : albumen mostly none. (Leaves alternate.) 



7. Sueedifc. Embryo flat-spiral. Calyx wingless. Leaves succulent. 



8. Salsola. Embryo conical-spiral. Calyx iu fruit horizontally winged. Leaves spinescent 



1. CYCLOLOMA, Moqiiin. Winged Pigwked. 



Flowers perfect, l)ractless. Calyx 5-cleft, with the concave lobes stronjjly 

 keeled, enclosing the depressed fruit, at length appendaged with a broad and 

 continuous horizontal scarious wing. Stamens 5. Styles 3. Seed horizontal, 

 flat. Embryo encircling the mealy albumen. — An annual and much-branched 

 coarse herb, with alternate sinuate-toothed petioled leaves, and small paiiicled 

 clusters of sessile flowers. (Name composed of kikcAco, round about, and Xw/xu, 

 a border, from the encircling wing of the calyx in fruit.) 



1. C. platyph^llum, Mu(iuin. (Salsola platyphy 11a, ^l//c/ix.)— Illinois, 

 on sandy banks of the Mississi])j)i, and northwestward. 



2. CHENOPODIUM, L. Goosefoot. Pigweed. 



Flowers perfect, all bractless. Calyx 5-cleft, rarely 2-4-cleft or parted, with 

 the lobes sometimes keeled, but not appendaged nor becoming snccident, more 

 or less enveloping the depres,«ed fruit. Stamens mostly 5 : filaments filiform. 

 Styles 2, rarely 3. Seed horizontal (sometimes vertical in Nos. 3,7-0). lenticu- 

 lar ; the coat crnstaceous : embryo coiled partly or fully round the mealy albumen. 

 — Weeds, usually with a white mealiness, or glandular. Flowers sessile in 

 small clusters collected in spiked panicles. (Named from xh^^ " (/nosp, and noiis, 

 foot, in allusion to the shape of the leaves.) — Our species are all annuals (ex- 

 cept the last two), flowering through late summer and autumn, growing around 

 dwellings, in manured soil, cultivated grounds, and waste places. 



§ 1. Smooth or mpnly, never (jhindnhir nor sweet -scented : emhnjo a complete, rinq. 



1. C. POT.YSPERMi'M, L. Low, oftcu Spreading, green and ivfiol/i/ destitute of 

 ntenh'ness thivphout : hares all entire, oh\or\^ or ovate and on slender petioles ; 

 flowers very small, the thin lobes of the calyx very incompletely enclosing the 

 fruit; seed obtuse-edged. — In and around Boston : scarce. (Adv. from Eu.) 



