SUBSTANCE, ETC. OF LEAVES. 131 



tudinal furrow, as M. pitgioniformc, f. 210, 

 Plantago maritima, Engl. Bot. t. 175, and 

 Narcissus poeticus, t. 275. 



Carinatuin, keeled, when the back is longitudinally 

 prominent, as Narcissus biflorus, t. 276'. 



Ensiformc, sword-shaped, is a two-edged leaf, ta- 

 pering to a point, slightly convex on both sur- 

 faces, neither of which can properly be called 

 upper or under, as in most of the genus Iris. See 

 Curt. Mag. t. 671, t. 9, &c., and FL Grtec. 

 t. 39 and 40. 



Anceps, two-edged, is much the same as the last 



Acinaciforme, cimeter-shaped, compressed, with one 

 thick and straight edge, the other thin and curved, 

 as Mesembryanthemum adnaclforme above men- 

 tioned. 



Dolabriforme, f. 98, hatchet-shaped, compressed, 

 with a very prominent d lated keel, and a cylin- 

 drical base, as M. dolabriforme.DULElth.t. 191, 

 Curt. Mag. t. 32. 



These two last terms might well be spared, as they 

 seem contrived only for the plants in question, and in- 

 deed are not essentially distinct from each other. 



Trigonum, f. 99, three-edged, having three longi- 

 tudinal sides and as many angles, like M.ddtoicks, 

 Dill. Eltli. t. 195, Linn. Phil. Bot. t. 1, / 58. 

 Linnaeus.has erroneously referred to this figure to 

 illustrate his term deltoides; misled, as it should 

 seem, by the name of the plant to which it be- 

 K 2 



