CHENOPODIACE^. (GOOSEFOOT FAMILY.) 677 



peiicarp ineinbranous or crustaceous. Seed horizontal or 

 vertical (often in the same species), testa membranous or 

 crustaceous. Embryo eitlier more or less perfectly circular, 

 surrounding the copious albumen, or Hattened-spiral, or 

 conical-spiral with no albumen ; cotyledons narrow ; radicle 

 near the hilum. . ■ 



SuuoRDEii I. CYCLOLiOBEiE. 



Embryo circular or horseshoe-shaped, surrounding the 

 copious albumen. 



Tribe I. CHENOPOBIEiE. Flowers perfect. Sepals alike. Testa crustaceous- 

 Stems not jointed. 



1. CHENOPODIUM. Perigonium 5-fid or -parted, unchanged in fruit, free. Stamens 5. 



2. BETA. @ 1|! Perigonium 5-fid, urceolate, base somewhat adherent to fruit, and at 



length indurated. Stamens 5. 



3. BLITUM. 21 Perigonium 3-5-fid or -parted, (in ours) becoming berry-like in fruit. 



Stamen (in ours) 1. 



Tribe II. ATKIPIilCK^E. Flowers moncjecious or ditecious, sometimes poly- 

 gamous, tlie staminate perigonium 4-5-parted, the pistillate 2-3-dentate, or replaced bv 2 

 bracts. Testa crustaceous or coriaceous. Stems not jointed. 



4. SPINACIA. Pistillate perigonium globular, 2-3-dentate, enclosing ovary. 



5. ATEIPLEX. 2f 5 I'istillatc perigonium 0, replaced by 2, appressedjfoliaceous, more 



or less connate bracts. 



Tribe III. CAMPHOKOSME.E. Flowers perfect or polygamous, similar in 

 form. Testa membranous. Stem not jointed. 



6. C^UIPIIOROSMA. ^ Perigonium tubular, 4-tootlied. Stamens 4. 



7. PANDEPJA. Perigonium urn-shaped, 5-toothed, fruiting teeth conni vent, appendaged" 



Stamens 5. 



8. CIIENOLEA. ^ Perigonium urn-shaped, 5-toothed, fruiting teeth not hardened or ap 



pendaged. Stamens 5. 



9. KOCHIA. Q Perigonium urn-shaped, 5 toothed, fruiting teeth connivent in a disk? 



nearly always appendaged. Stamens 5. 



Tribe IV' SALiICOKNEiE. Flowers perfect, 3-2 together, spiked-catkined, ses- 

 sile, more or less immersed in axillary cups subtended by bracts. Perigonium 3-4-toothed or 

 -parted nearly to base, teeth connivent and contiguous, forming a sort of utricle, which at 

 length becomes spongy, and has a shield-like apex. Testa membranous. Stems usually 

 jointed. Leaves opposite, enclosin-,' the joints by a sort of slieath, destitute oflamina^anil 

 connate in a short, bilobed cup, or scattered, separate, rudimentary 'or developed. 



10. IIALOPEPLIS. Flowers immersed in a floral cup, adnate to it, more or less con- 

 nate. Albumen abundant. 



11. 1IAL0CNEMU3I. ^ Flowers not connate. Seed albuuiinous. 



12. ARTIIEOCNEMUM. ^ Flowers superficially implanted in floral cup, not connate or 

 scarcely so. Albumen 0. 



13. SALICOIINIA. ^ Flowers deeply inmerscd in floral cuit, adnate to it, connate. 

 Albumen 0. 



Suborder 11. SPIROLOBEiE. 

 Embryo spiral. Mbumen meagre, biparted, or 0. 



Tribe V. SCJ^DK-^. Flowers perfect or polygamous, bracteolod. Fruit a utricle. 

 Seed horizontal or vertical, the testa usually double, crustaceous and membranous. Embryo 

 flat-spiral. Albumen 0, or forming two lateral masses separate from embryo. Stems not 

 jointed. 



14. SU.^DA. ^ Utricle included in perigonium, but free from it. 



15. SCHANGINIA, Utricle adnate to perigonium. 



