160 BUDS AND STIPULES 



CHAPTER VI 



ON THE FORMS OF STIPULES 



Though stipules do not show such endless differences 

 in form as is the case with leaves, nevertheless they 

 present an immense variety. 



They may be orbicular, as in Tropceolum ciliatum 

 (fig. 312) ; semi-orbicular, as in Guaiacum officinale 

 (fig. 30) ; ovate, as in Passiflora racemosa, Hop (fig. 47), 

 and Abutilon megapotamicum ; obovate, as in Bucklandia 

 (fig. 190) ; oblong, as in Leea (fig. 188) and Alder (fig. 

 145); elliptic, as in Hazel Nut (fig. 212) ; spathulate ; 

 lanceolate, as in Paronychia serpyllifolia and Pyrus 

 japonica; linear, as in Bisanihus (Hamamelideo?) and 

 Ficus infectoria; filiform, as in Turkey Oak (Quercus 

 Cerris) ; subulate, as in Mahonia and several species of 

 Helianthemum; sagittate, as in Latliyrus pratensis (fig. 

 299) and L. maritimus ; semi-sagittate, as in Latliyrus 

 latifolius (fig. 300) and L. grandiflorus ; reniform, as in 

 Vallea (Sterculiacece); triangular, as in Ceanothus rigidus ; 

 boat-shaped, as in Populus nigra (fig. 192); palmately 

 lobed, as in Croton ; laciniate, as in Trigonella laciniata ; 

 pinnatifid, as in several species of Croton, Medicago and 



