370 ciiiiNoi'ODiACK^. (goosi:foot family.) 



Synopsis. 



Trihe T. CYCliOLOBEi'C — Embryo ciirveU like a ring around tlio albumen. 

 1 CIlKNOPOniUM. Calyx 3 - O-parteJ, the lobes commonly keeled in fruit. Seed horizontal, 

 rarely vertical. 



2. ATKIPLK.X. Flowers monnrious. Calyx of the sterile flowers 5 parted, of the fertile 



flower none. Ovary enclosed in a pair of separate at length coriaceous bracts, lladicle 

 inferior. 



3. OBIONE. Bracts of the fertile flower united. Radicle superior. 



4. SALICOilNlA. Flowers 3 together, lodged in excavations of the thickened joints of the 



leafless stem. 



TRmE II. SPIROLOBK^. — Embryo spirally coiled, with little or no albumen. 

 Seed horizontal. 



5. CIIENOPODINA. Calyx 5 parted, not keeled. Leavea terete, fleshy. 



6. SALSOLA. Calyx at length transversely winged. Leaves spiny. 



1. CHENOPODIUM, L. Pigweed. Goosefoot. 



Calyx .5- (rarely 3-4) parted, brattless, the lobes mostly keeled. Stamens 

 5, the filaments filiform. Styles 2-3, distinct, or united at the base. Utricle 

 depressed, enclo.sed in the globose or .5-anglcd calyx. Seed horizontal (rarely 

 vertical), lenticular. Embryo forming a more or less perfect ring around the 

 co])ious mealy albumen. — Glandular or powdery-coated herbs, with alternate 

 leaves, and clusters of small greenish flowers disposed in panicled spikes. 



* Annuals, 



1. C. Boscianum, Moq. Stem erect, with angular branches; leaves 

 small, spreading, lanceolate-linear, very acute, entire, or tlie lower ones some- 

 what tootlied, more or less mealy and whitened beneath ; spikes loose, leafy ; 

 seed acute on the margins, slightly roughened, shining, enclosed in the acute- 

 angled calyx. — Carolina, Bofc — Stem slender, 2° high. Leaves 5"- 12" long, 

 on petioles 2" - 3'' long. Calyx-lobes elliptical-ovate, acuti.sh. 



2. C. album, L. Stem erect, branched, slightly furrowed ; leaves ascend- 

 ing, rlionibic-ovate, acute at the base, toothed ; the upper ones lanceolate and 

 entire, more or less coated with a white powder; spikes panicled; the small 

 clusters scattered or crowded, nearly leafless ; seed enclosed in the .5-angled 

 calyx, acute on the margins, smooth and shining. — Varies (C viride, L.) with 

 nearly entire and less mealy leaves, and the larger clusters more scattered. — 

 Cultivated grounds, Florida, and northward. July- Sept. — Stem 2° -6° high. 

 Petioles long and slender. 



3. C. murale, L. Stem ascending, branched ; leaves long-petioled, ovate- 

 rhombic, acute, unequally and sharply toothed, bright green on both sides ; spikes 

 slender, spreading, corymbose, scarcely exceeding the leaves ; seed not shining, 

 acute on the margins, nearly enclosed in the slightly angled calyx. — Waste 

 places, Florida, and northward. — Stem 6' - 18' high. 



4. C. Botrys, L, Stem erect, branched ; leaves oblong, somewhat pinna- 

 tifid-lobed, with the lobes obtuse and glandular-pubescent, the upper ones 

 minute ; racemes numerous, axillary, spreading, cymose ; seeds with rounded 



