Iviii CLASSES, DIVISIONS, AND OEDEKS. 



59. Verbenacece. Cor. scarcely 2-lipped (in our plant). 

 Stam. didynamous. Ovary 2 — 4-celled. Style terminal. 



Fr. a capsule dividing into 4 nuts 279 



60. Zentibulariacece. Cor. 2-lipped. Stam. 2. Caps. 

 1-celled, 2-valved ; placenta free, central ; seeds many. — 

 Floating plants 280 



61. Primulacea. Cor. regular. Stam. 6, rarely 4 or 7, 

 opposite the petals. Caps, opening by 5 — 10 valves at 

 the top, or by a deciduous cap ; placenta central ; seeds 

 many. Style 1 281 



62. Plumbaginace(B. Cor. regular, 5-fid, or rarely 5 

 free petals. Stam. 5, opposite the petals. Fr. a 1-seeded 

 utricle. Styles 5 286 



**#* Cor. and stam. hypogynous. 



63. Plantaginacece (in part). The genus Littorella with 

 monoecious fi., fem.-oal. 3-parted, cor. urceolate 288 



Division 4. MONOCHLAMYDEJE. 



64. Amai-anthacecs. Monoecious. Perianth 3 — 5-parted, 

 scarious, persistent, inferior. Stam. opposite perianth- 

 gegmenta. Caps. 1-seeded, not bm'sting. Style ; stig. 



1 or more 290 



65. Chenopodiaceee. Monoecious or perfect. Perianth 

 3 — 5-parted, herbaceous, persistent, inferior. Stam. op- 

 posite perianth-segments. Caps. 1-seeded, not bursting. 

 Styles 2 or more 290 



66. Polygonacece. Usually with perfect flowers. Peri- 

 anth 3— 6-parted, herbaceous, or petal-like, inferior. 

 Stam. 5 — 8, perigynous or hypogynous, opposite perianth- 

 segments. Caps. 1-seeded, not bursting. Styles several. 

 — Nut often enclosed in enlarged perianth. Stipules 



297 



67. Maagnaeece. Dioecious. Male perianth 4-paited, 

 female tubular with 2 — 5-toothed limb. Stam. alternate 

 with perianth-segments, or twice as many, perigynous. 

 Caps, crustaoeous enclosed in persistent inferior perianth. 

 —Shrub 304 



68. Tliymelaceo!. Perianth tubular, 4 — 5-lobed, inferior. 

 Stam. 8 in our plant, on the tube. Ovary 1-celled, with 



1 pendulous ovule. Fr. a nut or drupe. — Small shrubs . , 304 



