270 METHODS OF TOUUNEFORT AND MAGNOL. 



which sections is subdivided into those with a Corolla 

 and those without. The Trees with a Corolla are 

 again distributed into such as have one or many petals, 

 and those regular or irregular. — Herbs with a Corolla 

 have that part either compound (as the Dandelion, 

 Thistle and Daisy), or sisnple ; the latter being either 

 of one or many petals, and in either case regular or 

 irregular. We come at last to the final sections, or 

 classes, of the Tourneforiian system. Herbs with a 

 simple, monopetalous, regular corolla are either bell- 

 shaped or funnel-shaped ; those with an irregular one 

 either anomalous or labiate. Herbs with a simple, 

 polypetalous, regular corolla are either^cruciform, ro- 

 saceous, umbellate, pink-like or liliaceous ; those with 

 an irregular one, papilionaceous or anomalous. The 

 subdivisions of the classes are founded on the fruit. ■ 

 It is easy to perceive that a system of this kind can 

 never provide for all the forms of corolla which may 

 be discovered after its first contrivance ; and there- 

 fore the celebrated Dr. Garden, who studied by it, as- 

 sured me, that when he attempted to reduce the Ame- 

 rican plants to Tournefort's classes, he found them so 

 untractable, that, after attempting in vain to correct 

 or augment the system, he should probably have given 

 up the science in despair, had not the works of Lin- 

 naeus fallen in his way. 



Magnol, Professor at Montpellier,and even Linneeus 

 himself, formed schemes of arranging plants by the 

 calyx, which nobody has followed. 



