460 FLORA OF TEXAS. 



and tlie embryo forming a ring around the albumen, or 

 spirally coiled with little or no albumen. 



SYNOPSIS. 



Tribe I. Cyclolobese. Embryo curved in a ring 

 around the albumen. 



Calyx 3-5-parted, the lobes commonly keeled in fruit. Seeds horizontal., rarely 



vertical ". Chenopodium. 



Bracts of tJie fertile floiver united. Radicle superior Obione. 



Tribe IL Spirolobeae. Embryo spirally coiled, with 

 little or no albumen. Seeds horizontal. 



Calyx 5-parted, not keeled. Leaves terete, fleshy Chbnopodina. 



at length transversely winged. Leaves spiny Salsola. 



CHENOPODIUM, L. Pigweed; Goosefoot. 



Calyx 5- (rarely 3-4) -parted, bractless, the lobes mostly 

 keeled ; stamens 5, the filaments filiform ; styles 2-3, dis- 

 tinct, or united at the base ; utricle depressed, inclosed in 

 the globose or 5-angled calyx ; seed horizontal (rarely ver- 

 tical), lenticular ; embryo forming a more or less perfect 

 ring around the copious mealy albumen. — Glandular or 

 powdery-coated herbs, with alternate leaves, and clusters of 

 small gvQQmsh. flo'ioers disposed in panicled spikes. 



* Annuals. 



C. BosciAKUM, Moq. Ste^n erect, with angular branches ; 

 leaves small, spreading, lanceolate-linear, very acute, en- 

 tire, or the lower ones somewhat toothed, more or less 

 mealy and w^hitened beneath; spikes loose, leafy; seed 

 acute on the margins, slightly roughened, shining, inclosed 

 in the acute-angled calyx. (Carolina, Bosc.) Stem slender, 

 2° high; leaves 5"-12" long, on petioles, 2"-3" long; 

 calyx-lobes elliptical-ovate, acutish. 



C. ALBUM, L. Stem erect, branched, slightly furrowed ; 



