SECT. I. ORGANOGRAPHY AND GLOSSOLOGY. 37 



the terms here employed, which may chance to be new 

 to him. 



Primary Groups, characterised by certain Considerations 



taken from particular Parts. 

 Embryo. Structure. Fructification. 



1. Dicotvledones. Exogena?. 1 , 



i j TI j' <- Phanerogams. 



2. Monocotyledom's. .Lndogenre. J 



3 ") . f Ductulosa?. 1 



Acotvledones. [ .. . J- Cryptogama?. 



4. J L Cellulares. J J r 



CHAP. II. 

 NITTRITIVE ORGANS. 



FUNDAMENTAL ORGANS (38.). ROOT AND APPENDAGES (39.). 



STEMS (AERIAL) (43.). INTERNAL STRUCTURE (45.). 



FORMS AND DIRECTIONS (53. ). BUDS (56.). BRANCHES 



(58.) AND THEIR MODIFICATIONS (6 1 .). SUBTERRANEAN 



STEMS AND BRANCHES (62.). TUBERS AND BULBS; THEIR 



AFFINITY (63.). APPENDAGES TO THE STEMS (67.). 



(38.) Fundamental Organs. WE may refer back to 

 articles 8, 9> & c - f r a general notice of the complex 

 organs, which we are now about to describe more in 

 detail, though we do not propose to enumerate all the 

 varieties of form which these organs assume. There 

 are certain appendages both to the stem and root, 

 (or ascending and descending " axes" of vegetation), 

 which are of very little importance in carrying on 

 the function of nutrition. These appendages, as the 

 thorns, scales, tendrils, &c. found on some stems, 

 have without doubt their respective uses ; but as the 

 plant may be deprived of them, and still continue to 

 vegetate as freely as when they were present, they are 

 evidently not to be considered as fundamentally essential 

 to the support of life. Moreover, they may in all cases 

 be referred to certain modifications and metamorphoses, 

 which have taken place in one or other of the three 



