XCVI. CHENOPODIACEAE. 151 Fruit a dry nut enclosed in the perianth . . . . . . . . . 2. Chenopodium. Perianths minute white and dry, with 3 or 1 clavate segments . . 3. Dysphania. Male perianths small, equally 5- or 4-lobed, females much enlarged in fruit with 2 broad appressed segments enclosing the fruit . . 4. Atriplex. Tribe 2. Camphorosmeae. — Branches continuous. Leaves narrow, entire, flat or terete, glabrous, villous-tomentose or woolly. Testa membranous. Embryo curved round a mealy albumen. Fruiting-perianths globular or depressed, membranous, herbaceous or succulent, the lobes horizontally (or rarely conically) closing over the fruit. Seed horizontal or oblique. Fruiting perianth without appendages, succulent or coriaceous, glabrous or the lobes slightly pubescent 5. Exchylaena. Fruiting perianth surrounded by 3 to 5 distinct or by 1 continuous annular horizontal wings . . . . . . . . . . . . . 6. Kochia. Fruiting perianth membranous or herbaceous, enveloped in wool or long hairs, without any or with horn-like or spinescent dorsal appendages 7. . . . . . . . . . . . . . . . . . Chenolea. Fruiting perianth hard, at least at the base, the lobes usually membranous and withering. Fruiting-perianth with dorsal wings. Flowers solitary. Wings 2 or 3, nearly vertical. Seed horizontal 8. Babbagia. Flowers 2 together divaricate and connate at the base. Wings 5, horizontal. Seed vertical 9. Didymanthus. Fruiting perianth without any or with spincscent dorsal appendages. Fruiting perianth tomentose or woolly, with 2 opposite di- verging dorsal spines rarely wauting. Seed horizontal or oblique 10. Sclerol^na. Fruiting perianth glabrous, without appendages or rarely with
small erect spiaes. Seed horizontal or oblique .... 11. Threlkeldia.
Fruiting perianth glabrous or slightly hairy, with 3 to 5 diva- ricate dorsal spines. Sced vertical 12. Anisacantha . Tribe 3. Salicorniese. — Branches articulate, fleshy. Leave.s none. Flowers more or less immersed. Testa various. Embryo curved or foTdtd with liitle or no albumen. Single genus 13. Salicornia. Tribe 4. Salsolese. — Branches continuous. Leaves narroio, flat or terete, entire- Testa various. Emhryo spirally coiled, without albumen. Perianth small, herbaceous, without appendages. Testa crustaceous. Embryo coiled in a flat spire 14. Su-eda. Perianth rigid, with dorsal horizontal wings. Testa membranous. Embryo coiled in a conical or biconvex spire. (Leaves and bracts pungent) 15. Salsola. Tribe 1. Chenopodie^. — Branches continuous (not articulate). Leaves flat, often triangular or liastate, glabrous niealy scaly or glan- dular. Testa of the seed crustaceous. Embr^-o curved round a mealy albumen. . RHAGODIA, R. Br. Flowers polygamous, mostly hermaphrodite or female, but sometimes almost dioecious. Perianth deeply 5-cleft, the lobes or segments obtuse,
