3G2 CHENOPODIACE.E. (GOOSEFOOT FAMILT.) 



coiled into a ring (around the albumen, when there is any) or spiral. — Calyx 

 persistent, enclosing the fruit. Styles 2, rarely 3-5. (Mostly inert or 

 innocent plants.) See Addend. 



Synopsis. 



I. CYCLOLOBEiE. Embryo curved like a ring around the albumen. 



Tribe I. CHEWOPODIE^E. Flowers usually all alike and perfect, or merely polyg- 

 amous by the want of stamens in some of them. Stem not jointed. Leaves flat 

 Flowers in racemes, spikes, or panicles. (Fruit enclosed in the calyx.) 



1. CYCLOLOMA. Calyx 5-cleft, in fruit surrounded by a horizontal membranaceous whig. 



Seed horizontal. 



2. CHENOPODIUM. Calyx 3 -5-cleft or parted, the lobes naked or merely keeled in fruit. 



Seed horizontal (rarely vertical when the calyx is only 2 -3-cleft). 



3. ROUBIEVA. Calyx 5-clcft, becoming closed and pod-like in fruit Utricle glandular- 



dotted. Seed vertical. 

 1. BLITUM. Calyx of 3-5 sepals, dry or juicy in fruit. Utricle membranaceous. Seed 

 vertical. 



Tribe II. SPINA CIEiE. Flowers monoecious or dioecious, and of two distinct sorts : 

 otherwise as in Tribe I. 

 6. ATKIPLEX. Tail- of bracts including the otherwise naked ovary and fruit flat and dilated, 

 often united below. Radicle inferior or lateral. 



6. OBIONE. Fruit-bearing bracts united. Radicle superior. 



Tribe III. SALICORXIEiE. Flowers all alike and perfect, spiked or in catkins. 

 Stem jointed. Leaves awl-shaped, scale-like, or none. 



7. SALICOKNIA. Flowers sunk in excavations of the axis. Calyx utricular. 



II. SPIROLOBE^E. Embryo toiled in a spiral : albumen none or little. 

 Tribe IV. SXJiEDEiE. Embryo in a flat spiral. Leaves terete and fleshy. 



8. CHENOPODINA. Calyx 5-parted, wingless and hornless. Seed horizontal 



Tribe V. SALSOLE^E. Embryo conical-spiral. Leaves fleshy or spinescent. 



9. SALSOLA. Calyx of 5 sepals, in fruit horizontally 5- winged. Seed horizontal. 



1. CYCLOLOMA, Moquin. Winged Pigweed. 



Flowers perfect, bractless. Calyx 5-cleft, with the concave lobes strongly 

 keeled, including 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 panicled 

 clusters of sessile flowers. (Name composed of kvk\u., roundabout, and \a>fia, 

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



1. C platyphylluni, Moquin. (Salsola platyphylla. Michx.) —Illi- 

 nois, on the alluvial banks of the Mississippi, and northwestward. 



2. CHE WOP ODIUM, 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 succulent, more 



