1097 
Sessile, without a stalk, 
Seta, a hair-like bristle. Setose, bristly. 
Sheath, a tubular sheathing envelope as in the basal portion of a grass leaf, 
Shrub, a woody plant of perennial habit but smaller than a tree and commonly 
with several stems, 
Silicle, a short pod of Cruciferae, 
Silique, the usual pod of Cruciferae, 
—_—_—_—_———___ 
Simple, of one piece, not compound, 
Sinuate, wavye 
Sinus, the recess between two lobes, literally a baye 
Sorus, cluster of sporangia in Polypodiacease, 
inflorescence distant and 
divisions pedicellate, 
Spadix, a fleshy spike as in the Calla Lily. 
Spicate, arranged as a spike, 
Spicirorm, upper part of inflorescence spikelike in outline, lowermost branches of 
bike; a dense cylindrical inflorescence of sessile or nearly sessile flowers, 
] 
Spikelet, a small spikes especially the flower clusters of grasses and 
sedges. 
Spine, a sharp, more or less woody outgrowth of the stem; a thorn, 
Spinose, covered witl spines or similar processes. 
Spore, an asexual reproductive cell performing in ferns somewhat the function 
of a seed, but without an embryo. 
Sporophyll, a A ee as contrasted with a sterile leaf, 
Spur, a projection downward or backward from the calyx or corolla as in the 
Larkspur or Violet, 
Stamen, the male organ of a flower which bears the pollen. Staminate, used 
of flowers having stamens but no pistilse Staminodium, a sterile 
stamen or organ similar in position to a stamen, 
Stellate, star-like; radiately branched hairs. 
Sterile, failing to bear or incapable of bearing spores or seeds, 
Stigma, the recentive part of the pistil at which pollination actually occurs, 
