442 COTYLEDONS OF PLANTS. 



II. Monocotyledones, with a single cotyledon*', and these 

 are either, 



1. Perforate, as in Grasses. 



2. Unilateral, as in Palms ; or, 



3. Reduced, as in Cepa. 



III. Dicotyledones, having two cotyledons; and these are 

 either, 



1. Immutate, unchanged, as in the class Didynamia; and in 

 plants whose pericarpium is a legumen, pomwn, or drupaf. 



2. Plicate, folded, as in Gossypium. 



3. Duplicate, doubled, asinMALVA; and in the class Tetra- 

 dynamia. 



4. Obvolate, rolled up, as in Helxine. 



5. Spiral, turning like a screw, as in Salsola,...Salicornia,... 

 CERATOCARPUs,...BASELLA,...and all oleraceous plants! ; or, 



6. Reduced, as in umbellate plants. 



IV. Polycotyledones, with many cotyledons, as in Pinus,... 

 Cupressus, and Linum. 



* Linnceus observes, that the Monocotyledon.es are properly Acotyledones ; the 

 cotyledons remaining within the seed. Author. 



rfp See these terms explained in Part I. Chap. VI. Editor. 



X Pot herbs. The olereueous plants make an order in the Fragmcnta Methodi 

 Naturalis of Linnceus; consisting of Spinacia — Blitum — Beta — Galenia — Atri- 

 plex — Ckenopodium — Rivinia — Petiveri a — Herniaria — Illecebrum — Po- 



I.YCNEMUM AXYRIS AcHYRANTHES AlUARANTHUS GoMPHRENA CeLOSIA— 



Ceratgcarpus— Corispermum — Callitriche — Salsola — Salicornia, and Ana- 

 basis, Author. 



