FIELDBOOK OF ILLINOIS WILD FLOWERS 



KEY TO FAMILIES — CONT'd 



53. Calyx free from the ovary 54 



Calyx attached to the ovary 70 



54. Corolla regular or nearly so 55 



Corolla conspicuously irregular 65 



55. Ovaries 4-lobed BORAGE FAMILY in part p. 259 



Not thus 56 



SS. Style 3-cleft or lobed POLEMONIUM FAMILY p. 252 



Not thus 57 



57. Stamens attached to corolla opposite the lobes 



PRIMROSE FAMILY p. 230 



Stamens attached to corolla alternate with lobes 58 



58. Leaves opposite 59 



Leaves alternate 60 



59. Leaves with stipules or stipular lines 



LOGANIA FAMILY p. 234 



Not thus GENTIAN FAMILY p. 235 



60. Style 2-lobed or divided WATERLEAF FAMILY p. 255 



Not thus 61 



61. Stamens 5 62 



Stamens 4 64 



62. Ovules and seeds many NIGHTSHADE FAMILY p. 293 



Ovules few, usually 4 62 



63. Plants climbing or trailing . . .CONVOLVULUS FAMILY p. 248 

 Not thus BORAGE FAMILY in part p. 259 



64. Flowers small in spikes VERVAIN FAMILY in part p. 267 



Flowers large, not in spikes 



ACANTHUS FAMILY in part p. 315 



Ss. Ovary 4-lobed MINT FAMILY p. 272 



Not thus dd 



66. Fruits reflexed on the stem LOPSEED FAMILY p. 317 



Not thus 67 



67. Corolla heart shaped or 2-spurred 



FUMITORY FAMILY p. 121 



Not thus 68 



68. Ovules or seeds numerous, small. . .FIGWORT FAMILY p. 299 

 Ovules or seeds few, usually 4 69 



69. Stamens 2 ACANTHUS FAMILY in part p. 3 u 



Stamens 4 VERVAIN FAMILY in part p. 267 



70. Flowers perfect 71 



Flowers imperfect GOURD FAMILY p. 326 



71. Flowers in dense heads 7- 



Not thus 73 



72. Stamens separate TEASEL FAMILY p. 325 



Stamens united by their anthers 



COMPOSITE FAMILY p. 332 



33 



