358 INDEX. 



their structure in agamous plants, as Fungi, &.c. 250, 251 

 monocotyltdonous, as in Palms, their character 251 



holloio or fistular, as in Grasses . . 253 



without proper bark, and destitute of me- 



dullary rays ..... 254 

 — — — — they increase in height, but scarcely in di- 

 ameter; — how formed . . . . ib. 

 their vitality confined chiefly to the exist- 

 ence of the central bud .... 255 

 Stems Dicotyledonous, woody ; of 3 parts, viz. the bark, 



vjood, and pith ..... ib. 



Strawberry (Fragaria), the generic character . 26 



Strophostyles, native Kidney-beans, the genus . . 157 



Sumach (Rhus), the genus, how known . . 8l 



Sunflower (Helianthus), the genus of . . 173 



Superflua order of Syngenesia . . . 167 



Stngenesia Class, its natural and artificial character 159, 160 

 Swamp Hollyhock (Hibiscus), the generic character, &c. 14S 

 Sweet Fea, Vetchling (Lathyrus), the genus of . 153 



T. 



Tansey (Tanacetum), the genus of 168 

 Tare and Lentile (Ervum), the genus of . . 155 

 Teasel (Dipsacus), how distinguished . . .59 

 Tendrils, their various origin ; their uses effected in differ- 

 ent ways, &.c. ..... 153, 154 



Tetrandria Class ..... 59 



Tetradynamia Class (Crucifer^), its natural and artifi- 

 cial character ..... 135 



Teucrium (Germander), the genus of . . 126 



Thistle (Carduus), the genus of . . . 164 



Thorn-apple (Datura), the generic trait . . .72 



Tick-seed Sun-flower (Coreopsis), the genus of . 174 



Toad-flax (Antirrhinum), the genus of . . 130 



Tobacco (Nicotiana), the genus of 73 



Tree-primrose (CEnothera), the genus of 96 



Triandria Class continued .... 56 



Trillium, the genus of . . .91 



Truffle (Tuber), the genus of ... 216 



Trumpet-flower (Bignonia), the genus of . 130 



Tuber cibarium, its character . . . 216 



Tulip (Tulipa), the genus . . . .84 



Tulip-tree (Lyriodendron), the genus of . . 120 



Twin-flowered Honeysuckle (Xylosteum) . 73 



U. 



Umbel, its character ..... 17 



Umbelliferous flowers (Umbelliferse), the genera principal- 



