CONTENTS 



PACK 



Mature Sporophyte 374 



The Flower 378 



Order I. Helobieae (Fluviales) 381 



Order II. Pandanales 383 



Order III. Glumiflorae 384 



Order IV. Principes (Palmse) 386 



Order V. Synanthae 388 



Order VI. Spathiflorae .388 



Order VII. Liliiflorse 390 



Order VIII. Farinosse 392 



Order IX. Scitamineae 393 



Order X. Microspermae 395 



CHAPTER XH 



DlCOTYLEDONES 



Gametophyte 400 



Embryo 401 



Mature Sporophyte 404 



Stem 406 



Leaf 409 



Root 410 



Trichomes 410 



Flower . . . . . . ' . . . . .411 



Classification of Dicotyledons . .413 



SERIES I. APETAL*: (ARCHICHLAMYDE^:) 413 



Orders of Apetalse 414 



SERIES II. CHORIPETAL^E (MESACHLAMYDE^:) 422 



Orders of Choripetalse . . . _ . .. . . 424 



Families of Choripetalse ......... 443 



SERIES III. SYMPETAL^E (METACHLAMYDE.E) . . . . . 448 



Orders of Sympetalse . . . . ... . . . 449 



Families of Sympetalae 457 



Bibliography ............ 459 



CHAPTER XIII 



PHYSIOLOGY; NUTRITION, RESPIRATION, GROWTH, IRRITABILITY 



Food of Plants 461 



Sources of Food 462 



Imbibition 463 



Mechanics of Absorption 463 



Translocation 465 



Movements of Gases 466 



Osmotic Pressure .... 466 



