1 "Plant apparently leafless, or with opposite very reduced leaves; branches made up of succulent internodes (articles)" 2 1 "Plant with obvious leaves; branches not articulate" 3 2 "Perianth lacking upper lobe; stamen 1; seed with abundant albumen" Tecticornia 2 "Perianth truncate or rounded at apex with an upper (adaxial) lobe overlapping the 2 lateral lobes; stamens 2; embryo horseshoe-shaped; albumen absent" Salicornia 3 "Leaves flat, linear to lanceolate, 20-60 mm long, 2-8 mm wide with three longitudinal veins on the abaxial side" "Bassia scoparia" 3 "Leaves variously flat, narrow, terete or sub-terete, lacking three longitudinal veins on the abaxial side" 4 4 "Leaves flat, often broad, if terete then with mealy hairs when young" 5 4 "Leaves narrow, usually sub-terete; hairs (if present) simple, bifurcate, or stellate, neither glandular nor mealy" 10 5 "Plant mealy when young; flowers unisexual; male flowers with 5-lobed perianth and 5 stamens; female flowers lacking perianth but surrounded by a pair of bracteoles that may be free or fused, often inflated or spongy" Atriplex 5 "Plant variously hairy to glabrous; flowers unisexual or bisexual, all with a perianth, not surrounded by bracteoles" 6 6 "Plants shrubby, predominantly dioecious, if monoecious or with bisexual flowers then stamens 5" Rhagodia 6 "Plants herbaceous or weakly woody; flowers polygamous or bisexual" 7 7 "Herb with basal rosette of leaves; tepals 4, cartilaginous in fruit" "Scleroblitum: Scleroblitum atriplicinum" 7 "Plants without a basal rosette" 8 8 "Plant glandular-pubescent" Dysphania 8 "Plant glabrous, pubescent, or mealy" 9 9 "Tepals 1-5; stamens 1-5; seed horizontal or vertical; mostly annual herbs, rarely perennials, glabrous or with mealy indumentum" Chenopodium 9 "Tepals 5; stamens 1-3; seed horizontal; perennial herbs or weak shrubs with mealy indumentum" Einadia 10 "Flowers and fruits fused in axillary clusters of 2 or more" 11 10 "Flowers and fruits solitary or if in pairs then not fused" 13 11 "Indumentum of dendritic or stellate hairs" Eremophea 11 "Indumentum of simple hairs" 12 12 "Flowers in pairs; fruiting perianth cylindrical with 5 horizontal wings" "Didymanthus: Didymanthus roei" 12 "Flowers in clusters of 2 or more; fruiting perianth without wings" Dissocarpus 13 "Fruiting perianth without obvious appendages" 14 13 "Fruiting perianth with one or more wings, spines, or tubercles, not succulent" 18 14 "Flowers bibracteolate; embryo spirally coiled" Suaeda 14 "Flowers without bracteoles; embryo curved or annular" 15 15 "Fruit a subglobular nut subtended by the small deeply 5-lobed perianth" Roycea 15 "Fruit totally enclosed within the enlarged perianth" 16 16 "Fruiting perianth succulent, berry-like, split longitudinally to base" Enchylaena 16 "Fruiting perianth dry or, if succulent, not berry-like and not split to base" 17 17 "Fruiting perianth dry, subglobular" Osteocarpum 17 "Fruiting perianth dry or slightly succulent, ovoid to urceolate" "Threlkeldia: Threlkeldia diffusa" 18 "Fruiting perianth with erect wing or wings" 19 18 "Fruiting perianth without erect wings" 20 19 "Both horizontal and vertical wings present" Maireana 19 "Only vertical wing or wings present" Osteocarpum 20 "Horizontal wing or wings (but not spines) present on fruiting perianth" 21 20 "Spines or tubercles (but not wings) present on fruiting perianth" 23 21 "Flowers subtended by a pair of prominent spinescent bracteoles; embryo spirally coiled" "Salsola: Salsola australis" 21 "Bracteoles, if present, minute; embryo annular" 22 22 "Fruiting perianth lenticular to turbinate or globose with 5 horizontal wings or a simple annular horizontal wing" Maireana 22 "Fruiting perianth hemispherical, glabrous; apex truncate extending into a hard, narrow, 5-angled wing" "Sclerochlamys: Sclerochlamys brachyptera" 23 "Plant densely stellate- or dendritic-tomentose; leaves flattened; perianth spines epitepalous in origin" Eremophea 23 "Plant with simple or bifurcate hairs (if dendritic then leaves terete), or glabrous" 24 24 "Perianth appendages oblong, in two series, 5 erect and 5 horizontal, all arising from base of tepals" "Eriochiton: Eriochiton sclerolaenoides" 24 "Perianth appendages in one series, either beneath or between tepals" 25 25 "Perianth appendages 3-5, subcylindrical, soft, woolly, arising from base of perianth lobes" "Malacocera: Malacocera tricornis" 25 "Perianth appendages of spines or tubercles" 26 26 "Fruiting perianth cylindrical with 5 spines arising from base of perianth lobes, the spines sometimes united into an apical cup-shaped structure" "Neobassia: Neobassia astrocarpa" 26 "Fruiting perianth variously shaped; spines or tubercles 1-6 arising between perianth lobes" Sclerolaena