678 CHENOPODIACE^. (GOOSEFOOT FAMILY.) 



Tribe VI. SAIiSOLEiE. Flowers usually perfect, rarely polygamous, bibracteate. 

 Fruit a utricle or rarely a berry, fc^eed horizontal or vertical, with a single, membranoug 

 tunic. Embryo conical-spiral. Albumen 0. 



Sub-Tribe I. SODX:^. Seed liorizontal. 



* Fruiting jycrigonium not winged. 

 IC. TEAGANUM. ^ Fruiting perigonium nut-like, with two, horn-like processes. 

 * * Fruiting perigonium winged. 

 t Staminodes 5. Branches jointed. 



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



fruit, the other spreading. 



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



t t Staminodes 0, Branches not jointed. 



19. SALSOLA. ^ Wings of fruiting perigonium all spreading. 



Sl'b-Tribe II. ANABASES. Seed vertical. 



* Outer sepals 3, 071c posterior and 2 anterior ; inner sepals 2, lateral. 



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



21. ANABASIS. 5© Stems jointed. Lobes of perigonium free to base. 



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

 t Indument composed of long, jointed bristles, and short hair. 



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



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

 at base into a bony excrescence. 



t t Glabrous. 



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

 bous at back. 



I. CHENOPODIIJM, L. GoosEFooT. Pigweed. 



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

 lobes not appenclaged. Stamens 5, inserted at the base of the peri- 

 jTonium. Stigmas 3. Utricle depressed-globular, included in perigonium 

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

 vertical) with i:>eripheral embryo — Herbs, with flowers in small, spiked 

 or panicled clusters. 



* Enibryo forming a comijlete ring. Scentless orfcetid Jierhs. 



1. C. Vulvaria, L. .3 to .6, fcetid, mealy, ash-colored; stems 

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

 .01 to .O'Z 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 album, L. Lamb's-Quarters. Pig-weed. Fiss-el-KeUh. 

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

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

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

 ing compact or interrupted racemes, leafy lelow ; sepals keeled, covering 

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

 Waste places; everywhere. 



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

 erect, paniculate-branched nearly from base. Leaves round-rhomUc, 

 .000 to .03 long, olscwcly-d-lohed and Q'ejxmd-dentate, the upper similar 

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



