CONTENTS. t 



1, With regular lateral segments Pinnatifid. 



2, With eegments recurved or hooked Runcinate. 



8, Terminal segment enlarged Lyrate. 



4, Segments many and narrow Pinnatisect. 



5, Segments and sinuses rounded Sinuate. 



6 Palmately cut or lobed. 



6, Lobes only 3 Trilobate. 



7, Lobes 5 or more Palmately-lobed. 



8, Lobes deeply divided Palmately-parted. 



9, Side-lobes again 2-lobed Pedate. 



CHAPTER XXII. Forms of Compound Leaves. 



Pinnately compound. 



a Once compounded, consisting of 



1, Two leaflets opposite and equal Binate. 



2, Three leaflets, the odd one petiolnlate Pinnately-trifoliate. 



3, Four or more equal leaflets, all in.pairs Equally pinnate. 



4, Five or more equal leaflets, all but one in pairs Odd-pinnate. 



5, Alternate leaflets smaller Interruptedly pinnate. 



b Twice compounded, consisting of 



6, Nine leaflets (or 3 trifoliate leaves) Biternate. 



7, Fifteen or more leaflets (3 pinnate leaves) Bipinnate. 



c Thrice compounded, having 27 leaflets Triternate, &c. 



d Irregularly much compounded Decompound. 



* Palmately compounded, consisting of 



10, Three equal leaflets all alike sessile (Clover) Palmi-trifoliatc. 



11, Five or 7 leaflets, all equally sessile Digitate. 



CHAPTER XXIII. Transformations of the Leaf 106 



CHAPTER XXIV. Metamorphosis of the Flower. (See Chap. XVHI) 110 



CHAPTER XXV. Inflorescence. Special Forms 114 



Evolution. a One flower only from a bud Solitary. 



b From axillary buds, the lowest first opening Centripetal. 



c From terminal buds, the central first Centrifugal. 



Special Forms of Inflorescence. 



* Centripetal, or Indefinite. 



a Flowers sessile 1, along a slender rachis Spike. 



2, along a thick fleshy rachis Spadix. 



3, on an extremely short rachis Head. 



4, Spike of imperfect fle. caducous together... Ament. 

 b Flowers borne on pedicels. 



5, Along the sides of a lengthened rachis Raceme. 



6, Along a short rachis, the lower pedicels lengthened Corymb. 



7, Clustered on an extremely short rachis Umbel. 



C The pedicels themselves branched, 8 loosely Panicle. 



9 compactly Thyrse. 



Centrifugal, or Definite. 



1, Clusters open, loose, of various forms Cymo. 



2, Clusters compact, terminal Fascicle. 



8, Clusters compact, axillary and opposite Verticils. 



4, Cyme unilateral, unrolling as it develops Scorpoid Raceme. 



PART SECOND.-PHYSIOLOGICAL BOTANY 123 



CHAPTER I. Of the Vegetable Cell 123 



CHAPTER n. Of the Vegetable Tissues 127 



CHAPTER III. The Epidermal System 130 



CHAPTER IV. The Ligneous System *.'& 



