Does the plant-kingdom answer to these divisions ? It is divided 

 into three great provinces, ACOTYLEDONEJS, MONOCOTYLEDO- 

 NEJ:, and DICOTYLEDONEJE. 



A. AcoTYLEDONE2E. These have neither separate Root, Stem, 

 nor Leaves ; neither Bark, Liber, nor Wood ; they consist, then, 

 merely of Cells, Veins, and Spiral Vessels. They are then essen- 

 tially only Plant-Tissue, and are Pith-plants. 



B. MONOCOTYLEDONEJE. These have Blossoms in which the 

 calyx is hardly distinct from the corolla ; Sheaths instead of in- 

 dependent Leaves ; and a Stalk, in which Bark, Liber, and Wood 

 are not distinguishable. They represent, then, the Anatomical Sys- 

 tems, and are Sheath-plants. 



C. .DycoTYLEDOiNEJE. These first show a perfect distinction in- 

 to Root, Stem, and Leaves, and are the representatives of the Or- 

 gans, Organ-plants. 



The Dicotyledoneee fall again into three great divisions, 1. Mo- 

 nopetalaj, 2. Polypetalas, 3. A petalte. The last have been reckoned 

 imperfect, which holds only if the corolla be the highest development 

 and the last end of the plant. But it is not; it being in the fruit 

 that all parts of the flower combine, and all the strength of the 

 plant is concentrated, whence may be inferred the possibility of 

 diminution or destruction of parts in the corolla, and hence the pro- 

 priety of regarding the Apetalse, not so much as wanting corolla, 

 but as having fruit They are the Fruit-plants. Of the two oth- 

 er divisions, the first, Monopetalse, must be taken for the lowest 

 division of Dicotyledonese, and as answering to the Stem. They 

 will be distinguished, then, especially by their development in 

 Root, Stem, or Leaves, and will consist therefore of plants with 

 knobbed or sappy roots, plants almost nothing but stem ; or plants 

 almost nothing but leaves; as Thistles, Heaths, Mints. They 

 are the Stalk-plants. As to the remaining division, Polypetalce, the 

 flowers are certainly most perfectly developed in them, and hence 

 they are the Bloom-plants. We have, then, 



A. Pith-plants. Acotyledoneae. 



B. Sheath-plants. Monocotyledoneae. 



C. Organ-plants. Dicotyledonece. 



a. Stalk- plants. Monopetalse. 



b. Bloom- plants. Polypetalae. 



c. Fruit-plants. Apetalce. 



These great divisions being settled, it becomes next the question, 

 if the separate Classes depend also on separate Organs. And 

 first, A., of the Pith-plants, or Aeotyledoneae. These consist of 

 cells, veins, and spiral vessels. The cells we find in the Fungi, 

 which consist wholly of cellular tissue, without higher develop- 

 ment, or green hue. The spiral vessels we find in the Ferns, the 

 first plants into which spiral vessels enter, which vessels therefore 

 characterize this clast. Having thus ascertained the two outside 

 classes of the Pith-plants, we refer the remainder (Musci, aquatic 

 Algae, and Lichenes) in which there are no spiral vessels, but 



