678 cHENOPODiACEiE. (goosefoot fa:siily.) 



Tkibe YI. SAIiSOIiE-iE. Flowers usually perfect, rarely polygamous, bibracteate. 

 Fruit a utricle or rarely a berry. Seed horizontal or vertical, with a single, membranous 

 tunic. Embryo conical-spiral. Albumen 0. 



Sub-Tribe I. SODEiE. Seed horizontal. 



* Fruiting pcrigoniiim not icinged. 

 IG. TKAGANUM. ^ Fruiting perigoniuni nut-like, with two, horn-like processes. 

 , * * Fruiting perigonium winged. 



t Staminodes 5. Branches jointed. 



17. BEIDLITZIA. Posterior wing of fruiting perigonium spoon-shaped, bent forward over 



fruit, the other spreading. 



18. HALOXYLON. ^ Wings of fruiting perigonium all spreading. 



^ ■\ Staminodes 0. Branches not jointed. 



19. SALSOLA, 5 Wings of fruiting perigonium all spreading. 



Sub-Tribe II. ANABASEiE. Seed vertical. 



* Outer sepals 3, one posterior and ^anterior ; inner sepals 2, lateral. 



20. NOEA. 5 Stems not jointed. Lobes of perigonium connate at base. 



21. ANABASIS. ^ Stems jointed. Lobes of perigonium free to base. 



* * Outer sepals 2, 07ie anterior, the other posterior ; inner sepals 3, lateral. 

 •j- Indumcnt composed of long, jointed bristles, and short hair. 



22. ilALOCILVRlS. Leaves muticous. Lobes of perigonium 5, free, unchanged in fruit. 



23. HALIMOCJSTEMIS. Leaves spiny-tipped. Lobes of fruiting perigonium 5-4-3, united 

 at base into a bony excrescence. 



t I Glabrous. 



24. HALOGETON. ^ Two or three or all the lobes of fruiting perigonium winged or gib- 

 bous at back. 



1. CHEXOPOBIUM, L. Goosefoot. Pigweed. 



Flowers perfect, bractless. Calyx 5-cleft or -parted, with the 

 lobes not appendaged. vStamens 5, inserted at the base of the peri- 

 ^•onium. Stigmas 3. Utricle depressed-globular, included in perigonium 

 but free from it. Pericarp membranous, thin. Seeds horizontal (rareh^ 

 vertical) with peripheral embryo — Herbs, with flowers in small, spiked 

 or panicled clusters. 



.* Eriibryo formiiuj a comjAete ring. Scentless orfcEtid lierlis. 



1. C. Vuivarla, L. .3 to .6, fa3tid,meal3% ash-colored; stems 

 ascending, much branched. Leaves alternate, petioled, rhombic-ovate, 

 .01 to .02 long, entire. Flower-clusters raceme-like, axillary and ter- 

 minal, leafless ; sepals keelless, covering fruit; seed dotted, with acutish 

 margin — May to October — Roadsides; common. 



2. C. albiiiti, L. Lamb's-Quarters. Pig-weed. Fiss-el-Keldh. 

 .3 to .8, greenish or mealy, ash-colored; stems erect, ending in a stiff 

 panicle. Leaves rhombic-ovate, .02 to .04 long, sinuate or dentate, rarely 

 entire, the upper oUong -lanceolate to linear, entire. Flower-clusters form- 

 ing compact or interrupted racemes, leafy helow ; sepals Iceeled, covering 

 fruit ; seed smooth, glossy, with acute margin — May to October — 

 Waste places ; everywhere, 



3. C. opulifoliuui, Schrad, .5 to .8, glaucous-mealy; stem 

 erect, paniculate-branched nearly from base. Leaves rowid-rJiomUc, 

 .006 to .03 long, obscurely -S-loled and repand-dentate, the upper similar 

 but smaller, the uppermost oblong to linear. Flower-clusters in axillary 



