THE 



GARDENER'S AND BOTANIST'S DICTIONARY, 



DICOTYLEDONE^. 



GRAND DIVISIONS. 



GRAND DIVISION I. VASCULARES, (from vas, a ves- 

 sel ; plants furnished with spiral vessels) OR COTY- 

 LEDO'NE^E, ((coTvXrjSwv, cotyledon, a seed leaf; plants 

 furnished with seed leaves.) Plants with cellular tissue 

 (f. 1. 1. 6.), woody fibre and spiral vessels (ad), and fur- 

 nished with true leaves (f. 1. 3. 8. 7.). The flowers usually 

 distinct and symmetrical (f. 2.). Embryo furnished with 

 cotyledons (f. 1. 4. 5. 10. a.), and inclosed within a 

 seed-cover. This division contains all the classes of Lin- 

 naeus, Cryptogamia excepted. 



GRAND DIVISION II. CELLULA'RES, (cellula, a lit- 

 tle cell ; plants with cellular tissue only,) OR ACOTY- 

 LEDCTNE^E, (a. privative, KorvAijSwv, cotyledon; plants 

 without cotyledons.) Plants with cellular tissue only 

 (f. 1. 11, 12.). Embryo destitute of cotyledons. Parts 

 of fructification hidden (f. 1. 14. 13. a.). This grand di- 

 vision only contains the class Cryptogamia of Linnasus. 



GRAND DIVISION I. 



VASCULARES OR COTYLEDO'NE^E. 

 CLASSES. 



CLASS I. DICOTYLEDO'NE.E, (< c , dis, two; KorvXrfav, 

 cotyledon ; plants furnished with two cotyledons) or EXO- 

 GE'NjE (tw, exo, without ; yf.vvau>, gennao, to bring forth ; 

 stem increasing by external layers). D. C. syst. 1. p. 123. 

 prod. 1. p. 1. 



Stem increasing by external layers ; with an evident distinc- 

 tion between bark and wood (f. 1.2. a, 6.). Leaves traversed 

 by branch veins (f. 1. 3.). Parts of flower generally disposed 

 in a quinary number (f. 2. 2.). Embryo with 2 opposite coty- 

 ledons (f. 1. 4. a.), or when more they are disposed in a whorl 

 (f. 1. 5. a.). Plumule in the centre of their point of junction 



VOL. I. 



(f. 1. 4. b. and 5. i.): the inferior end of the embryo itself 

 elongated into a radicle, and not containing any secondary ra- 

 dicles in its substance (f. 1. 4. c. and 5. c.). 



CLASS II. MONOCOTYLEDONEjE, Ovoc, monos, one; 

 KOTvXrjSoiv, cotyledon, plants furnished with 1 cotyledon) or 

 ENDOGE'NE-ZE (tvlov, endon, within ; yevvaia, gennao, to 

 bring forth ; stem increasing by internal layers.) 



Stem increasing by internal layers with no evident distinction 

 between bark and wood, but are mixed together (f. 1. 6.). 

 Leaves traversed by simple veins (f. 1. 7. 8.) usually with no 

 articulation between the leaves and the stem, while in Dico- 

 tyledbneae the leaves are always joined with the stem, from 

 which they fall off, leaving a scar behind. Embryo fur- 

 nished with 1 cotyledon (f. 1.10. a.), or if 2, they are alter- 

 nate (f. 1 . 9. .) ; the inferior end elongated into a radicle or 

 radicles (f. 1. 10. b. & 9. b.). Plumule usually inclosed in 

 the body of the embryo. 



FIG. 1. 



CLASS I. 

 DICOTYLEDONE^E OR EXOGE'N^. 



Synopsis of the Subclasses, deduced from the organs of fructi- 

 fication. 



l.Perigone double, (f. 2. 3. and 4. 6.) 

 Subclass I. THALAMIFLO'ILE. (f. 2. 1.) 



Petals many, distinct ; and are, as well as the stamens, inserted 

 in the receptacle (a). 

 B 



