INDEX. 



317 



Spiral arrangement of leaves, 193. 



Spiral vessels or cells, 189, 225. 



Spirea, 117. 



Spores, the seed of the Cryptogams, 14, 22. 



Sporangia, the vessels containing spores, 



Spotted Chimaphila, 154. [22. 



Sprekellia, 263. 



Spring Beauty, 39. 



Spruce, 218. 



Spur, a floral appendage, or nec- 

 tary, 97, 235. Columbine. 



Spurge, Spotted. 206. 



Spurgeworts, 206. 



Squills, 258. 



Squirting Cucumber, 96. 



Stamens, 32. 



Staminate flower, 137. 



Standard, or banner, 118. 



Stapelia, 199. 



StaphylSa, 195. 



Star Grass, 258. 



Star of Bethlehem, 258. 



Stellaria, 80. 



Stem, the ascending axis. 



Sterile flower, not fruitful, 137, 191. 



Stigma discoid stellate. 



Stigma plumous, as in 

 Grasses. 



Stigma, 32. 



Stigmatic, partaking of 

 the stigma. 



Stings, hollow, poisonous hairs, 104. 



Stipe, the stalk of the ovary, 21. 



Stipels, the stipules of the leaflets, 117. 



Stipitate, on a stipe. ,, 



Stipules, small leaves at base of the j\ 

 petiole, always in pairs, 75. \&) 



Stolon, a runner. ^L 



Stolomferous, producing stolons, 137. ^ 



Storksbill, 87. 



Stoma, mouth (of a sporange), 14. 



Stomata, mouths in the cuticle of leaves. 



Strawberry, 104. 



Strict, straight and erect. 



Striped Maple, 192. 



Strobile, fruit of the Pines ; a cone. 



Struggle for existence, 146. 



Style, the middle part of the pistil, 32. 



Sub (in composition), under ; in a less 

 degree. 



Snbkingdom?, 22. 



Subulate, awl-shaped, 17. 



Succulent, very juicy and cellular. 



Suffruticous, partly shrubby (frutex^ a 

 shrub), 154. 



Superior (ovary), ovary 

 free. 



Superior (calyx), calyx 

 adherent. 



Susjar Maple, 188. 



Sundew, 104. 161. 



Sunflower, 145, 147. 



Supervolute aestivation, 183. 



Suppression, 194, 209. 



Suspended ovule, growing 

 from the top of the cell. 



Sutural (dehiscence), open- 

 ing at the sutures. 



Suture (sute-yur), 66, 118. 



Swamp Maple, 192. Milkweed, 195. 



Sweet Alyssum, 103. Flag, 233. Pea, 117. 

 Vernal Grass, 276. Violet, 75. Wil- 

 liam, 83. 



Symmetrical, of the same number. 



Syn (in composition), together. 



Syngendciousj stamens united by their 

 anthers, as in the Composites. 



Synonym, 103. 



Sysirinchium, 244. 



T. 



Tagdtes, 147. 



Tamarind, 125. 



Tannic acid, 223. 



Tapioca, 207. 



Tap root. See Axial root. 



Taraxacum, 144. 



Tawny, fulvous, dull yellowish brown. 



Tea-berry, 147. [seed," 111. 



Tegmen, " inner layer of the coating of a 



Tendril, an appendage for climb- 

 Teratology, 82. [ing, 119. 



Terete (stem), evenly rounded, 

 cylindric, 13. 



Terminal, placed at the summit or 

 apex, 14. 



Ternate (leaves, or leaflets), in threes, 47, 



Testa, the outer coat of a seed, 33. 



Tet-ra-dyn-a-mous, 4 stamens 

 longer than the other 2, 100. 



Thalictrum, 59. 



Thallus, the cellular body of a 

 Lichen, etc., bearing the fruc- 

 tification. 



Thimble-berry, 116. 



Thistle, 147. 



Thorns. See Spines, 114, 121. 



Throat, orifice of a monopetalous corolla. 



Thyrse, a dense panicle, as in Lilac, Horse 



Tigridia, 246. [Chestnut 



Toad Flax, 173. 



Tolugum, 125. [hairs, 110. 



Tomentous, with short, dense, woolly 



Tonga Bean, 125. 



Toothroot Cress, 101. 



Top-shaped, inversely conical. 



Torrey, Dr. John, 265. 



Torus, the basis of a flower, 31. 



Trag'acanth, 125. 



Tragopdgon, 147. 



Tree, 107. 



Tri (in composition), three ; as 



Triandrous, having 3 stamens. 



Tricolor (three-colored), 75. 



Trientalis, 165. 



Trifid cut deeply in 3 parts. 



Trifoliolate, with 3 leaflets. 



Trillium, 246. 



Trilliacege, 251. 



Tril-o-bate, having 3 lobes. 



Trim-e-rous, 3-part- 

 ed. 



Tripinnate, thrice 

 pinnate. 



Triquetrous, three- 

 angled, equitant aestiva- 

 tion, 260. 



Tri-ter-nate, thrice ternate, 58. 



