S4 LEAVES. 



10. CARINATE, (carinatum) keeled \ when the back 

 is longitudinally prominent. 



11. ENSIFORM, ( msijorme) sword-shaped ; is a two- 

 edged leaf tapering to a point, slightly convex on both 

 surfaces. Ex. Flag or Flower-de-luce, Iris. 



12. TWO-EDGED, (anceps.) Much the same as the 

 last. 



IS. SCIMITAR-SHAPED, (acinaciforme.) PI 7, fig 

 14. Compressed, with one thick and straight edge, 

 the other thin and curved. Ex. Mesembryanthemum 

 acinaciforme. 



14. HATCHET- SHAPED, (dolabriforme.) PL 7, fig. 

 13. Compressed with a very prominent dilated keel, 

 and a cylindrical base. Ex, M. dolabri/orme. 



15. THREE-EDGED, (trigonum.} PL 7, fig. 15, Hav- 

 ing three longitudinal sides and as many angles. Ex. 

 Mesembryanthemiim delt tides. 



16* THREE- s IDED, (triquetrum) differs from trigo- 

 num on ly in being used by Linnaeus for a three-sided, 

 awl-shaped leaf. Ex. M. emarginatum. 



17. FOUR-ED GED, (tefrag-orawn.) PL 7, fig. 16. Hav- 

 ing four prominent angles. 



18. TONGUE- SHAPED, (lingulatum) of a thick, ob- 

 long, blunt figure, generally cartilaginous at the edges. 

 Ex. Jhesembryanthemum linguiforme. 



19. MEMBRANOUS, (membranaceum) of a thin, pli- 

 able texture. Ex. Rubus odoratus. 



20. LEATHERY, (coriaceum) thick, tough, and 

 somewhat rigid. Ex. Magnolia grandifora, and Hy- 

 drangea horiensis. 



21. EVERGREEN, tsempervirens) permanent through 

 one, two, or more winters, so that the branches are 

 never stripped. Ex. Pine, Pinus 9 and Laurel, Kahnia 

 latifdla. 



22. DECIDUOUS, (deciduiim) falling off at the ap- 

 proach of winter, as in most of the trees and shrubs of 

 our northern climate. 



23. ALIENATED, (alienatum.) PI. 7, fig. 17. When 

 tb# first leaves of a plant give place to others totally 



