364 CHENOPODIACEAE (GOOSEFOOT FAMILY) 



cent,' leaves linear, persisting; flowers larger; fruit 4 mm. long; the 2 outer 

 sepals small, at length reflexed. (P. ericoides Engelm. & Gray.) S. Mo. 

 (Bush) to Ga. and Tex. FIG. 716. 



7. BRUNNICHIA Banks 



Calyx-divisions somewhat petal-like, oblong, 

 connivent and coriaceous in fruit, the base and 

 almost the whole length of the pedicel winged 

 on one side. Stamens 8 ; filaments capillary. 

 Styles 3, slender ; stigmas depressed-capitate. 

 Ovule pendulous on a slender erect funiculus ; 

 seed erect, 6-grooved. Achene obtusely trian- 

 gular, partly 3-celled, inclosed in the indurated 

 calyx. Somewhat shrubby, with grooved 

 stems, climbing by tendrils from the ends of 

 the branches. (Named for M. T. Brunnich, a 

 Norse naturalist of the 18th century.) 



1. B. cirrh6sa Gaertn. Leaves ovate, pointed, 

 entire ; petioles dilated at base, but with no dis- 

 tinct sheath or stipules ; flowers greenish, 2-5 

 71T. B. cirrhosa. " in a fascicle, crowded in axillary and terminal 



Leafx%. racemes; fruiting calyx with the wing 2.4-2.7 



Bit of fruiting raceme x l. cm. long. Thickets, s. 111. and Mo. to Tex., 



Fla., and S. C. FIG. 717. 



CHENOPODlACEAE (GOOSEFOOT FAMILY) 



Chiefly herbs, of homely aspect, more or less succulent, with mostly alternate 

 leaves and no stipules nor scarious bracts, minute usually greenish flowers, with 

 the free calyx imbricated in the bud, the stamens as many as its lobes, or occa- 

 sionally fewer, and inserted opposite them or on their base ; the I -celled ovary 

 becoming a l-seeded thin utricle or rarely an achene. Embryo coiled into a 

 ring around the mealy albumen, when there is any, or else conduplicate, or 

 spiral. Calyx persistent, mostly inclosing the fruit. Styles or stigmas 2, 

 rarely 3-5. Mostly inert or innocent, weedy plants ; several are pot-herbs, 

 such as Spinach arid Beet. 



* Embryo coiled into a ring about the usually copious central albumen ; leaves flat, not spiny ; 



stem not jointed. 



+ Flowers perfect (or stamens only occasionally wanting), clustered or panicled ; calyx 3-5-toothed 

 or -parted, obvious, persistent; seed-coat crustaceous. 



1. Cycloloma. Calyx 5-cleft, in fruit surrounded by a horizontal continuous membranaceous 



wing. Seed horizontal, crustaceous. Leaves sinuate-toothed. 



2. Kochia. Like no. 1, but wing 5-lobed and seed-coat membranaceous. Leaves entire. 



3. Roubieva. Calyx 3-5-toothed, becoming saccate and reticulated. Leaves pinnatifld. 



4. Chenopodium. Calyx 3-5-parted, unchanged or becoming fleshy in fruit. 



+- +- Flowers monoecious or dioecious ; the staminate in clusters, mostly spiked, the calyx 3-5- 

 parted ; the pistillate without calyx, inclosed between a pair of appressed axillary bracts. 



5. Atriplex. Fruiting bracts with margins often dilated and sides often muricate. 



-s- -- +- Flowers polygamous, clustered in the axils, 1-sepaled, ebracteolate. 



6. Monolepis. Annual herb with lanceolate-hastate leaves ; fruit a utricle. 



-j- +- -i- *- Flowers perfect, naked or 1-sepaled, solitary in the axils of the reduced upper leaves. 



7. Corispermum. Pericarp oval, flattened, adherent to the vertical seed. Leaves linear. 



* * Embryo narrowly horseshoe-shaped or conduplicate ; no albumen ; stem fleshy, jointed ; leaves 

 reduced to opposite fleshy scales or teeth; flowers densely spiked, perfect. 



