8 CONTENTS AND 



theoretical position, — c, summary — correspondence between a flower and a leafy 

 branch. 6"2, Apparent exceptions — examples of symmetrical flowers. 63, «, First 

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

 ples. — i. Second cause, the suppression of entire whorls — examples. — c, Third 

 cause, the suppression of parts of whorls — examples. — ^, Fourth cause, the union 

 of parts of the same whorl — examples. — c, 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. — h, Eighth 

 cause, development of axis — examples. 



CHAPTER v. — OF THE FLOWER. 



§J. STAMENS AND THE ARTIFICIAL CLASSES.— .34. 



64, The stamens, basis of a classification — why. — 6-5, Definition — 66, parts — 

 which essential. 6", Filament. 68, Anther — when sessile — connectile — anal- 

 ogy, — cf, cells — dehiscence, — A, connectile, — f, stamen abortive. 69, Modes of 

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

 troree — extrorse. 70, Pollen — forms, — ff, structure — molecules. 71, Physio- 

 k>gica! structure — of the filament — connectile — anther — pollen. 72, Theoretical 

 structure — proof from the transitions of stamens into pistils — examples. 7-3, Cir- 

 cumstances in which stamens varv — twentv-four Linnean Classes. 74, Number, — 

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

 9th, 10th; nth. 2nd, Position, — 12th, 13th. 3d, Relative length, — 14th, 1.5th, 

 4th, Connection, — iGth, 17th, ISth, 19th, 20th. 5th, Absence, — 21st, 22d, 23d, 

 aith. 



CHAPTER VI. — THE FLOWER. 



}3. OF THE PISTIL AND THE ARTIFICIAL ORDERS. — 39. 



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

 compound — carpels. 7S, The style — number — connection. 79, Stigma — sim- 

 ple — compound. SO, Number of stvles, orders founded upon. Order 1st, 2nd, 3rd, 

 4th, Sth, 6th, 7th, &th, 9th, 10th, 11th, 12th. i\'&<^, — Orders of the class Didyna- 

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

 Orders of Syngenesia, Equalis — Superflua — Frustranea — Necessaria — Segre- 

 gata. Orders of Polygamia, JIona;cia — Dicecia. Orders of the 24th, class. 81, 

 Ovules. S2, Placenta — structure — direction. 83, Physiological structure — of the 

 ovary — style — stigma — without epidermis. 84, Tlieoretical structure explained, — 

 sutnres — ventral — dorsal, — a, illustration, — h, c, illustrations continued. 85, Pro- 

 positions, — first — second — third — fourth. 86, These propositions when true. S7, 

 Central placenta, — parietal placenta. SS, Free central placenta, — explanation. — 

 a, 0\'u]es proved to he analogous to buds. 89, Ovules enclosed — naked,' — a, 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 ofl^ce — how accomplished, — a. illustrations, — tulip — Kalmia, 

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

 tion. 



CHAPTER Vn. — THE FLOWER. 



§5. OF THE CALYX. — 45. 



9.5, Calyx — etymology — color. — 96, Sepals — monosepalous — polysepalotis. — 

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

 duced — wanting — a. Pappus — pilose — plumose — setose — paleaceous. 



§6. OF THE COROLLA. — 46. 



100, The corolla — etvmolosv. 101, Petals — polypctalous — monopetalous. 102, 

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

 late. 2, Infnndibulif'irm. 3, llypocratirifo.rm. 4. Potate. .5, Labiate — ringent — 

 personate — galea. 105, Forms of pnlypetalons corolhis, — 1, Cruciform. 2, Rosa- 

 ceous. 3, Liliaceous. 4, Caryophyllaceous. 5, Papilionaceous — vexillum — aire — 

 carinae. 106, Physiological structure — colors. 



