CHEXOPODIACEAE. 119 



Ovary 1-celled; ovule solitary, amphitropous; styles 1-3; stigmas capitate, 

 or 2-3-lobed or divided. Fruit a utricle, with a thin or coriaceous peri- 

 carp. Seed vertical or horizontal; endosperm mealy, fleshy or wanting. 

 About 75 genera and 550 species, of wide geographic distribution. 



Embryo annular or horseshoe-shaped : leaves normal, at least the lower broad. 



Calyx present; fruit not enclosed by bractlets. 1. Chenopodium. 



Calyx present in staminate flowers only ; fruit enclosed by 



bractlets. 2. Atriplcx. 

 Embryo spirally coiled. 



Leaves thick and fleshy, nearly terete. 3. Donrlin. 



Leaves reduced to rudimentary scales or ridges. 4. Salicornia. 



1. CHENOPODIUM L. Sp. PI. 218. 1753. 



Annual or perennial herbs, with alternate petioled leaves. Flowers small, 

 green, perfect, sessile, braetless, clustered. Calyx 2-5-parted or 2-5-lobed, 

 embracing or enclosing the utricle, its segments or lobes often keeled or ridged. 

 Stamens 1-5; filaments filiform or slender. Styles 2 or 3; seed horizontal or 

 vertical, sometimes in both positions in different flowers of the same species: 

 endosperm mealy; embryo completely or incompletely annular. [Greek, goose- 

 foot, from the shape of the leaves.] About 60 species, mostly weeds, of wide 

 geographic distribution. Type species: Chenopodium rubrum L. 



Embryo a complete ring : plant not aromatic. 1. 0. murale. 



Embryo horse-shoe-shaped ; plant aromatic. 2. C. ambrosioides. 



1. Chenopodium murale L. Sp. PI. '219. 1753 



Annual, somewhat scurfy above; stem 3-8 dm. high, leafy to the summit. 

 Leaves rhombic-ovate, thin, bright green, acute or acuminate, sharply and 

 coarsely sinuate-dentate, cuneate or subtruneate at the base, slender-petioled, 

 5-10 cm. long; flowers in loose axillary panicles often not longer than the 

 petioles; calyx-segments not entirely enclosing the utricle; seed sharp-edged, 

 horizontal, firmly attached to the pericarp. 



A weed of streets and waste grounds, on the inhabited islands of the archi- 

 pelago, Great Bahama to Watling*s. Acklin's. and Long Islands, East Caicos and 

 Grand Turk : Widely distributed as a weed in temperate and tropical regions. 



SOWBAXE. GREEXS. 



2. Chenopodium ambrosioides L. Sp. PI. 219. 1753. 



Chenopodium spathulatum Sieb.; Moq. in DC. Prodr. 13 2 : 73. 1849. 



Annual, glabrous or slightly glandular-pubescent, strong-scented ; stem 

 leafy. 6-10 dm. high, angular and grooved. Leaves oblong or oblong-laneolate, 

 narrowed to a short petiole, repand-dentate, undulate or the upper entire, 2-9 

 cm. long, the upper numerous and much smaller ; flowers in small dense axillary 

 spikes ; calyx usualy 3-parted, completely enclosing the fruit ; pericarp readily 

 separable from the horizontal or vertical, shining seed. 



A weed, in waste grounds of the larger towns, New Providence, Eleuthera and 

 Cat Island : Widely distributed as a weed in temperate and tropical regions. 

 Wormseed. Jerusalem Parsley. 



2. ATRIPLEX L. Sp. PI. 1052. 1753. 



Herbs or low shrubs, often scurfy-canescent or silvery. Leaves alternate, 

 or some of them opposite. Flowers dioecious or monoecious, small, green, in 

 panicled spikes or capitate-clustered in the axils. Staminate flowers bractless, 

 consisting of a 3-5-parted calyx and an equal number of stamens; filaments 



