Index and Glossary 



211 



SEL 



Selectivepower of roots, 37 



Sensitive Tree, 151, 164 



Sepal (Fr. sepah ; Low Lat. sefahini). 

 A portion of the calyx, the outermost 

 covering of the flower, 100, 102 



Septenate (Lat. septem^ seven). A leaf 

 with seven leaflets, 80 



Septicidal ' (Lat. septum, a division ; 

 ctsdo^ I cut). A capsule where dehis- 

 cence takes place along the sejjta, 137 



Septifragal (Lat. septum, a division ; 

 ^ango, I break). _ A capsule where, 

 the carpels opening by their dorsal 

 sutures, the septa separate from the 

 valves, 137 



Serrate (Lat. serratus, sawed). Applied 

 to the margin of the leaf when there 

 are a number of sharp saw-like teeth 

 pointing towards the apex, 76 



Sessile (Lat. sessilis, sitting). When 

 any organ is destitute of a stalk, 70, 95, 

 ."3 



Sieve-tubes. Vessels with the separa- 

 ting walls perforated in a sieve-like 

 manner, 21 



Silene, 161 



Silica of plants, whence obtained, 35 



Silicula (Lat. a little pod). In structure 

 like the siliqua, but shorter and 

 broader, 138 



Siliqua (Lat. a bean pod), A bicarpellary 

 capsule with a replum running up the 

 centre ; the two valves break away 

 and leave the seeds attached upon the 

 replum. It is long and narrow in 

 shape, 138 



Silver grain, 50 



Sinuate (Lat. sinuatus, crooked). Ap- 

 plied to the margin of the leaf when 

 there are alternate lobes and depres- 

 sions of a larger form than in crenate 

 leaves, 77 



Sloe, 165 



Snapdragon, 174 



Soboles (Lat. a sprout). An under- 

 ground creeping stem thinner than 

 the rhizome, 56 



Soiomon's Seal, 183 



Sowbread^ 176 



Spadix (Lat. a palm branch). A fleshy 

 unisexual spike surrounded by a spathe, 



Spathe (Lat. sPatha, the flowering 

 branch of a palm tree). A bract enve- 

 loping one or a number of flowers, 92, 

 96 . . 



Spathulate (Lat. spathula, diminutive 

 of spatha). Spoon shaped ; when 

 a leaf is rounded at the apex and 

 narrower towards the base, 79 



Species, 156 



Spermoderm (Gr. spemta^ seed \ derma, 

 .'skin). The term used collectively for 

 the coats of the seed, 4 



Sphere crystals, 14 



Spike (Lat. spica, an ear of corn). An 

 indefinite inflorescence with prolonged 

 axis and sessile flowers, 94, 96 



SUP 



Spinacea, 177 



Spine. A modified branch or leaf which 

 is hard, stiff, and sharp-pointed, 61 



Spiny leaves. Leaves with sharp spines 

 on their margins, as in the holly, 77 



Spiral cells, 18 ; vessels, 22 ; vernation, 

 66 



Spirma, 166 



Spur. A prolongation of the various 

 parts of the flower, iii 



Stamen (Lat, a distaff)* One of the 

 divisions of the andrcEcium, the outer- 

 most whorl of the essential organs of 

 the flower, 100, 113 



Staminate flowers. Those with stamens 

 but no pistil, loi 



Staminode {^stamen, and Gr. eidos, re- 

 semblance). An abortive stamen. 



Standard. One of the petals of papilio- 

 naceous flowers, log 



Star of Bethlehem, 184 



Starch, g 



Stellaria, 161 



Stellate (Lat. stella, a star). Term used 

 in describing cells with several star- 

 like processes, 16 



Stems, 40 ; forms of, 53 ; growth of, 45, 

 52 



Stigma (Gr. a point). The portion of 

 the pistil which receives the pollen, 

 118, 122 



Sting, 72 



Stipulate. Possessing stipules, 6g 



Stipule (Lat. stipula, a blade). Folia- 

 ceous organs often attached at the base 

 of the leaf, 6g 



Stiichwort, 161 



Stock, 160 



Stolon (Lat. a shoot). A branch given 

 off above ground and striking into the 

 soil, 55 



Stomata (Gr. stoyna, a mouth). The 

 openings through the epidermis of 

 plants, 41, 71 



Storehouse of food, 39 



Strawberry, 165 



Striation of cell wall, 21 



Strobilus (Lat. a cone). An inflorescence 

 differing from a cone in possessing 

 membranous bracts, 96 



Style (Lat. stylus, a sharp-pointed in- 

 strument used for writing on waxed 

 tablets). The stalk which supports 

 the stigma upon the ovary, 118, 121 



Suber(Lat. cork). A changed condition 

 of cellulose met with in cork, and epi- 

 dermis cells, 7 



Subterranean stems, 55 



Sucker (Lat. surculus, a branch). A 

 branch springing below the soil and 

 growing up into the air, 55 



Sulphur of plant, whence obtained, 35 



Sunfloixjer, 172 



Superior. Applied to calyx when above 



ovary, 103 ; and to ovary when above 



calyx, 103 



Supervolute (Lat. j7//^r, upon ; vohitns, 



rolled). When in the leaf bud two 



