CHEXOPODIACEAE. 67 



united carpels, the ovary mostly superior. Fruit an achene, utricle or a 

 berry, or sometimes an antbocarp. 



A. Fruit a utricle, achene or berry, sometimes an anthocarp, not valvate, or merely 



circumsclssile. 

 Fruit various, not nn anthocarp. 

 Fruit utricular. 



Bracts not scarious : stipules wanting. 



Erect or diffuse plants. Fam. 1. Chenopodiaceae. 



Climhing vines. Fam. 2. Basellaceae. 



Bracts or stipules scarious. Fam. 3. Amaranthaceae. 



Fruit baccate or an achene, or aggregate. 



Fruit an achene or a berry : flowers not 

 in cones, 

 llypanthium wanting: stamens borne be- 

 low the ovary : stigmas not penlcellate. Fam. 4. riiYTOi.ACCACEAE. 

 llypanthium present : stems borne on the 

 edge of the hypanthium : stigma penl- 

 cellate. Fam. 5. Petiveriaceae. 

 Fruit aggregate : flowers in axillary cones. Fam. 6. Batidaceae. 

 Fruit an anthocarp, the achenes surrounded by the 



calyx-tube. Fam. 7. Allioniaceae. 



B. Fruit a capsule dehiscent by apical or longitudinal 



valves. 

 Ovary several-celled : corolla wanting. Fam. 8. Tetragoniaceae. 



Ovary 1-celled : corolla mostly present. 



Sepals 2 : leaves mostly alternate. Fam. 9. Portdlacaceae.. 



Sepals 4 or 5 : leaves mostly opposite. 



Sepals distinct : ovary sessile : petals not 



clawed. Fam. 10. Ai.sinaceae. 



Sepals united : ovary stipitate : petals clawed. 



Fam. 11. Caryophyllaceae.. 



Fa-Mily 1. CHENOPODIACEAE. Goosefoot Family. 



Herbs or woody plants. Leaves alternate or opposite : blades simple- 

 Flowers perfect, polygamous, monoecious, or dioecious, mostly in con- 

 gested spikes. Calyx of 1, 2, 3, 4, or 5 persistent sepals. Corolla want- 

 ing. Androecium of as many stamens as there are sepals. Gynoecium of 

 2 or more united carpels. Ovai-y 1-celled. Fiiiit a utricle, sometimes 

 achene-like. 



Embryo annular or conduplicate : endosperm copious (except in Salicornia). 

 Leaves with dilated blades : endosperm copious. 



Flowers perfect, or some of them pistillate : calyx fleshy or herbaceous. 



1. CllE.NOPODIUM. 



Flowers dioecious or monoecious : pistillate flowers with- 

 out a calyx : fruit enclosed in 2 bracts. 2. Atriplex. 

 Leaves mere scales : endosperm wanting. 3. Salicornia. 

 Embryo spirally coiled : endosperm wanting or scant. 4. Dondia. 



1. CHENOPODIUM L. Mealy or aromatic glandular herbs. Leaves 

 alternate: blades mainly toothed, pinnatifid, or pinnately lobed: sepals flat, 

 keeled and often hooded. Anther-sacs commonly contiguous. Ovary de- 

 pressed or elongate. 



1. C. anthelminticum L. Stem .5-12 dm. tall, branched: leaf -blades lanceo- 

 late to oVjlong-laiireolate or ovate-lanceolate, tho?e of the stem-leaves 3-15 cm, 

 long, coarsely toothed or incised : seeds 0.7-0.8 mm. wide. [Chenopodium 

 ambrosioidcs L.] — Pinelands ajid coastal sand-dunes. — P. K, {Bcr., Bah., 

 Cuba, Ant.) — Mexican-tea. Worm-seed. 



2 . ATRIPLEX [Tourn.] L. Scaly herbs or shrubs. Leaves alternate 

 or sometimes opposite : blades often angulate or toothed. Flowers monoecious 

 or dioecious, the staminate bractless, the pistillate bracted. Calyx herbaceous. 



