XVI CONTENTS 



PAGES 

 ORIGIN AND DEVELOPMENT OF LEAVES. Primordial leaf. 



Its formation 156 



PHYLLOT AX Y. Definition; spiral law of leaf arrangement; alternate; 



opposite, decussate; whorled; fascicled; leaf rank. ..... 156-157 



VERNATION. Definition; inflexed or reclinate; conduplicate; con- 

 volute; circinate; plicate; involute; revolute 157-158 



THE COMPLETE LEAF. Its parts; sessile; petiolate; exstipulate; 



stipulate 158-159 



LEAF VENATION. Furchate; parallel; reticulate; pinni-veined; 



palmately veined; anastomosing veins 159 



LEAF INSERTION. Definition; radical; cauline; ramal; perfoliate; 



amplexicaul; connate-perfoliate; equitant 159-161 



FORMS OF LEAVES. Simple and Compound, (a) General Outline: 

 ovate; linear; lanceolate; elliptical; oblong; inequilateral; or- 

 bicular; peltate; filiform; oblanceolate; cuneate; spatulate; en- 

 siform; acerose; deltoid, (b) Apex: acute; acuminate; obtuse; 

 truncate; mucronate; cuspidate; aristate; emarginate; retuse; 

 obcordate. (c) Base: cordate; reniform; hastate; auriculate; 

 sagittate, (d) Margin: entire, serrate; dentate; ^crenate; 

 repand; sinuate; incised; runcinate; lobed; cleft; parted; di- 

 vided. Forms of Compound Leaves 161-166 



LEAF TEXTURE. Membranous; succulent; coriaceous 166 



LEAF COLOR. Variations in color 166 



LEAF SURFACE. Glabrous; glaucous; pellucid-punctate; scabrous; 

 pubescent; villose; sericious; hispid; tomentose; spinose; 

 rugose; verrucose 166 



DURATION OF LEAVES. Persistent or evergreen; deciduous; cadu- 

 cous; fugacious 167 



GROSS STRUCTURE AND HISTOLOGY OF THE LEAF PETIOLE. 

 In Monocotyledons. In Dicotyledons. Pulvinus. Peri- 

 cladium 167-168 



STIPULES. Definition; lateral; free-lateral; lateral-adnate; lateral- 

 connate; lateral interpetiolar. Axillary; ochrea. Modified 

 Stipules 168-169 



