8 CONTENTS AND 



theoretical position, <?, summary correspondence between a flower and a leafy 

 branch. 62, Apparent exceptions examples of symmetrical flowers. 63, , First 

 cause of deviation, the development of one or more additional whorls exam- 

 ples. b, Second cause, the suppression of entire whorls examples. e, Third 

 cause, the suppression of parts of whorls examples. d, Fourth cause, the union 

 of parts of the same whorl examples. *, Fifth cause, the union of organs of differ- 

 ent whorls examples. /, Sixth cause, unequal -development of similar organs 

 examples, g, Seventh cause, reconversion of organs examples. A, Eighth 

 cause, development of axis examples. 



CHAPTER V. OF THE FLOWER. 

 2. STAMENS AND THE ARTIFICIAL CLASSES. 34. 



64, The stamens, basis of a classification why. 65, Definition 66, parts 

 which essential. 67, Filament. 68, Anther when sessile connectile anal- 

 ogy, a, cells dehiscence, 6, connectile, c, stamen abortive. 69, Modes of 

 attachment of anther to filament, 1st, innate ; 2d, adnate ; 3d, versatile ; 4th, in- 

 trorse extrorse. 70, Pollen forms, a, structure molecules. 71, Physio- 

 logical structure -= of the filament connectile anther pollen. 72, Theoretical 

 structure proof from the transitions of stamens into pistils examples. 73, Cir- 

 cumstances in which stamens vary twenty-four Linnean Classes. 74, Number, 

 Etymology of the names of the Classes. Class 1st, 2nd, 3d, 4th, 5th, 6th, 7th, 8th, 

 9th, 10th, llth. 2nd, Position. 12th, 13th. 3d, Relative length, 14th, 15th, 

 4th, Connection, 16th, 17th, 18th, 19th, 20th. 5th, Absence, 21st, 22d, 23d, 

 24th. 



CHAPTER VI THE FLOWER. 

 J 3. OF THE PISTIL AND THE ARTIFICIAL ORDERS. 39. 



75, The pistil, its position structure. 76, Ovary ovules. 77, Ovary simple 

 compound carpels. 78, The style number connection. 79, Stigma sim- 

 ple compound. 80, Number of styles, orders founded upon. Order 1st, 2nd, 3rd, 

 4th, 5th, 6th, 7th, 8th, 9th, 10th, llth, 12th. Note, Orders of the class Didyna- 

 mia Tetradynamia Orders of the 16th, 17th, 18th, 20th, 21st, and 22d classes. 

 Orders of Syngenesia, Equalis Superflua Frustranea Necessaria Segre- 

 gata. Orders of Polygamia, Monoecia Dicecia. Orders of the 24th, class. 81, 

 Ovules. 82, Placenta structure direction. 83, Physiological structure of the 

 ovary style stigma without epidermis. 84, Theoretical structure explained, 

 sutures ventral dorsal, a, illustration, i, c, illustrations continued. 85, Pro- 

 positions, first second third fourth. 86, These propositions when true. 87, 

 Central placenta, parietal placenta. 88, Free central placenta, explanation. 

 a, Ovules proved to be analogous to buds. 89, Ovules enclosed naked, #, erect 

 ascending pendulous suspended. 90, Foramen primine secundine nu- 

 cleus a, illustration. 91, Funiculus chalaza. 



4- OF THE MUTUAL ACTION OF THE STAMENS AND PISTILS. 44. 



92, Their specific office how accomplished, a, illustrations, tulip Kalmia, 

 &c. 93, Action of pollen upon the stigma tubes. 94, Molecules their destina- 

 tion. 



CHAPTER VH. THE FLOWER. 



5. OF THE CALYX. 45. 



95, Calyx etymology color. 96, Sepals monosepalous polysepalous. 

 97, Calyx inferior superior, 98, caducous deciduous persistent, 99, re- 

 duced wanting a, Pappus pilose plumose setose paleaceous. 



J.6. OF THE COROLLA. 46. 



100, The corolla etymology. 101, Petals polypetalous monopetalous. 102, 

 Claw lamina, 103, tube limb, 104, regular irregular. 1, Corolla campanu- 

 late. 2, Infundibuliform. 3, Hypocratiriform. 4, Rotate. 5, Labiate ringent 

 personate galea. 105, Forms of polypetalous corollas, 1, Cruciform. 2, Rosa- 

 ceous. 3, Liliaceous. 4, Caryophyllaceous. 5, Papilionaceous vexillum alae 

 carinse. 106, Physiological structure colors. 



