ANALYTICAL KEY. XLX 



Calyx persistent after flowering. 

 Ovary 8 - 18-celled : ovules many, on the partitions. 22 Nyjiph^ace^;. 

 Ovary 5-cellcd : ovules many: placenta; in the axis. 23 Sarraceniace^e. 

 Ovary I-celled or partly 3-celled : placentae parietal. 45 Cistaceje. 

 Ovary 1-celkd, compound (stigmas 3 or more) ; the 



placenta central : sepals 2, deciduous. . 63 Portulacaoe.e. 



Ovary 1 -celled, simple, with one parietal placenta. 



Herb, with two peltate leaves and one large flower. 19 Berberidace^e. 

 Herbs, with palmately dissected or twice or thrice ter- 



nately compound leaves. ... 2 (30) Ranunculace;e. 



Shrubs or trees, with twice or thrice pinnate leaves or 



phyllodia in their place. Acacia, &c. (43) Leguminos.e. 



* # Stamens united with the base of the (hypogynous) petals. 

 Calyx valvatc in the bud : stamens monadelphous : an- 

 thers kidney -shaped, 1 -celled. . . . 65 (36) Malvaceae. 

 Calyx imbricated in the bud: anthers 2-celled. 70 (38) Camelliace^e. 



* * # Stamens and petuls inserted on the calyc (perigynous). 

 Stamens just twice as many as the petals, 12, 14, or 16. 

 Pistils as many as the petals, separate: leaves fleshy. (53) Crassulace.e. 



Pistil only one, 1 -2-celled, many-seeded. . 127 (50) Lythrace^e. 



Stamens more than twice as many as the 5 petals (in 



natural flowers) : leaves alternate, with stipules. 110 (45) Rosacea. 

 Stameus (short) and petals both indefinitely numerous: 

 leaves opposite: pistils many, enclosed iu a hol- 

 low receptacle 116 (49) CALYCANTHACEiE. 



2. Calyx more, or less coherent with the surface of the (compound) ovary ; i e. the 



ovary inferior or partly so. 



Ovary several-celled, the cells in two sets, one above the 



other. Tree, with showy scarlet flowers. Punica. (49) Myrtace^e. 

 Ovary 2 - 5-celled. 

 Leaves punctate with pellucid dots under a lens. (49) MyrtacEjE. 



Leaves not punctate with pellucid dots, 



With stipules, not unequal-sided : fruit fleshy. 110 (45) Rosacea. 



With stipules, strikingly unequal-sided : ovary 3-angled. (53) Begoniace^:. 

 Without stipules, 



Alternate, not fleshy : stamens adhering to the bases 



of the petals. Shrubs 265 Styracace.e. 



Opposite, not fleshy : stamens not on the petals. 



Shrubs. Philadelphus. 141 (54) Saxieragace^e. 



Opposite or alternate, thickened and fleshy : petals 



numerous and narrow. . . (51) Mesembryanthemace^:. 

 Ovary 10-30-celled : ovules many, covering the partitions : 



petals very numerous ; aquatic. ... 22 Nymph.&'ACe.e. 



