NOMENCLATURE OF THE LEAF. 59 



g. Sword-shaped orensiform when it is long, tapering to a point, 

 very thin on both edges, and slightly curved, as in German flower- 

 de-luce and common corn-flag or sword-lily. (F. 81.) 



h. Spatnlate when round at the apex and gradually tapers to- 

 wards the base, as in narrow -leaved navel-wort. (F. 82.) 



i. Wedge-shaped or cuneiform broad and abrupt at the summit, 

 and tapering down to the base, as in wedge-leaved saxifrage and 

 shrubby candy-tuft. (F. 85.) 



j. Fan-shapedresembling the wedge-shaped in the base, but 

 more dilated and rounded at the apex. (F. 6.) 



k. Oblong three or four times longer than broad, as in the banana 

 tree and eastern oleaster. (F. 83.) 



I. Oval or elliptical when it is twice as long as it is broad, and 

 nearly equally rounded at the extremities, as in Venetian sumach 

 and American mammea. (F. 87.) 



m. Ovate or egg-shaped when the length is greater than the 

 breadth, with both extremities rounded, but the base much broader 

 than the apex, as in common marjoram and elecampane. (F. 111.) 



n. Obovate egg-shaped, with the broad end uppermost, as in 

 cowslip and common water pimpernel. (F. 112.) 



0. Roundish or snbrotund approaching to the circular figure, as 

 in round-leaved mallow . ( F. 88. ) 



p. Circular, orbicular, or round length and breadth equal, and 

 tin circumference a circle, as in round-leaved navel-wort and com- 

 mon penny-wort. (F. 116.) , 



}. Crescent-shaped or semilunate curved like a crescent, as in 

 cnscent-lcaved passion-flower. (F. 113.) 



r. Angled where the circumference has considerable projections 

 wiich are not lobnlar. The varieties are 



Triangular having three angles, as in English mercury and 

 garden orach, (F. 84.) 



Quadrangular having four angles, as in the ctfmmon tulip tree. 

 Pentangular having five angles, as in the geranium pelta- 

 tum. (F.89.) 



s. Repand bordered with numerous angles and segments of 

 ercles alternately, as in sauce-alone. (F. 90.) 



t. Trowel-shaped or deltoid when it has three angles, or repre- 

 seats the Greek letter Delta, one of the angles forming the apex of 

 thi leaf, as in the great delta-leaved fig marygold and black poplar. 

 (I. 91.; 



1. Diamond-shaped or rhomboid approaching to a square, as in 

 jlmting water-caltrops. (F. 145.) 



