GLOSSARY AND INDEX. 221 



Shrub, Shrubby, 39. 



Sieve-ctlls, 140. 



Sigmoid, curved in two directions, like the letter S, or the Greek sigma. 



Silicic, a pouch, or short pod of the Cress Family, ii-i. 



Siliculose, bearing a silicle, or a fruit resenibliug it. 



Silique, capsule of tlie Cress Family, 123. 



Siliquose, bearing siliques or pods which resemble siliques. 



Silky, glossy with a coat of lino and soft, close-pressed, straight hairs. 



Silver-grain, the medullary rays of wood, 139. 



Silvery, shmnig white or bluish-gray, usually from a silky pubescence. 



Simple, of one piece ; opposed to compound. 



Siidstrorse, turned to the left. 



Sinuate, with margin alternate!}' bowed inwards and outwards, 55. 



Sinus, a recess or bay, the re-entering angle between two lobes or projections. 



Sleep ofPlunU (so called), 151. 



Smooth, properly speaking not rough, but often used for glabrous, i. e. not pu- 

 bescent. 



Soboliferous, bearing shoots (Snboles) from near the ground. 



Solitary, single , not associated with others. 



So7-diil, dull or dirty in hue. 



Sorediate, bearing patches on the surface. 



Sorosis, name of a multiple fruit, like a pine-apple. 



Sorus, a fruit-dot of Ferns, 159. 



Spadiceous, chestnut-colored. Also spadix-beanug. 



Spadix, a flesh}' spike of flowers, 75. 



Span, the distance between the tip of the thumb and of little finger outstretchtd, six 

 or seven inches. 



Spathaceous, resembling or furnished with a 



Spathe, a bract which inwraps an inflorescence, 75. 



Spatulate, or Spathulate, shaped like a spatula, 52. 



Species, 175. 



Specific Names, 179. 



Specimens, 18-1. 



Spermaphore, or Spermophore, one of the names of the placenta. 



Spermum, Latin form of Greek word for seed; much used in composition. 



Spica, Latin for spike; hence Spicate, in a spike, Spiciform, in shape resembling a 

 spike. 



Spike, an inflorescence like a raceme, only the flowers are sessile, 74. 



Spikelet, a small or a secondary' spike; the inflorescence of Grasses. 



Spine, 41, G4. 



Spindle-shaped, tapering to each end, like a radish, 36. 



Spinesccnt, tipped by or degenerating nito a thorn. 



Spinose, or Spiniferous, thorny. 



Spiral Vessels or ducts, 135. 



Spithameous, span-high. 



Spora, Greek name for seed, used in compound words. 



Sporadic, widely dispersed. 



Sporangium, a spore-case in Ferns, &c., 158. 



Spore, a body resulting from the fructifjcation of Cryptogamous plants, in them 

 the analogue of a seed. 



Spore-case {Sporangium), 1.58. 



Sporocarp, 162. 



Sport, a newly appeared variation, 176. 



Sporule, same as a spore, or a small spore. 



Spvmesrent, appearing like frnth. 



Spur, any prDJecting appendage of the flower, looking like a spur but hollow, as 

 that of Larkspur, fig. 239. 



Squamaie, Squamose, or Squamaceous, furnished with scales (s/juamw). 



