KEY TO THE FAiMlLIES 11 



Sepals imbricate. 



Filaments united in 3 or more sets; leaves pellucid-punctate. 



82. Hypericaceae 156 



Filaments distinct; leaves not punctate. 



Caly.x deciduous. 50. Papaveraceae 95 



Calyx persistent. 



Stigmas distinct or united, but not discoid; land 

 plants; petals and sepals 4. 



53. Capparidaceae 109 



Stigmas united into a disk; aquatic plants; petals 



and sepals numerous. 47. Nymphae.vceae 86 



Sepals valvate; stamens with united filaments. 



81. Malvaceae 154 

 ft Stamens few, not over twice as many as the petals. 



Stamens as many as the petals and opposite them. 



Anther-sacs opening by liinged valves. 



49. Berberidaceae 94 



Anther-sacs opening by slits. 



Flowers monoecious. 74. Ecphorbiaceae 150 



Flowers perfect. 42. Portulacaceae SO 



Stamens as many as the petals and alternate with them, or 

 more, sometimes twice as many. 



Stamens 6 or less; petals 4: sepals 2 or 4. 



Sepals 2; endosperm present; flowers irregular: stamens 



diadelphous. 51. Fumariaceae 95 



Sepals 4, rarely more; endosperm wanting; flowers 

 regular. 

 Capsule 2-celled; stamens tetradj-namous, rarely 2 



or 4. 52. Brassic.\CEAE 96 



Capsule 1-celled; stamens not tetrad ynamous. 



53. Capparidaceae 109 

 Stamens, petals, and sepals of the same number, or sta- 

 mens more, usually twice as many as the sepals or 

 petals. 



Ovary 1-celled. 



Ovules, or seeds, on basal or central placentae. 



Sepals 2; or, if more (in Leuisia), plant scapose, 

 with fleshy basal leaves and the flowers soU- 

 tarj' on a jointed scape. 



42. PORTUL.\CACEAE SO 



Sepals 4-5; plants leafy-stemmed. 



Sepals distinct; petals not clawed; ovary 



sessile. 44. Alsixaceae 81 



Sepals united; petals clawed; ovary more or 

 less distinctly stipitate. 



45. Cartophtllaceae 85 

 Ovules, or seeds, on parietal placentae. 



Stamens with united filaments and no stamin- 



odia. 81. Malvaceae 154 



Stamens with distinct filaments. 

 Staminodia present. 



56. Parnassiaceae 110 



Staminodia wanting. 



Stigmas 2-cleft; plants insectivorous, with 

 glandular-hispid leaves. 



54. Droseraceae 110 

 Stigmas entire; land plants, not insectiv- 

 orous; leaves not glandular-liispid. 



Styles in ours distinct. 



Sepals persistent, united into a 

 tube; leaves not pellucid-dotted. 



84. Franke\l\ceae 156 

 Sepals distinct; leaves pellucid- 

 dotted. 



82. Hypericaceae 156 

 Stj-les wholly imited. 



Corolla regular or nearly so; sta- 

 mens 8 or more. 

 Sepals and petals 4; the latter 

 not fugaceous. 



53. Capp.\rid.\ceae 109 



Sepals and petals 3 or 5; the 

 latter fugaceous. 



85. Cist.\ceae 156 

 Corolla irregular ; one petal spurred ; 



stamens 5. 



86. Viol.\ceae 156 

 Ovary several-celled. 



Stamens adnate to the g>Tioecium. 



106. Asclepiadaceae 183 



