xl BOTANICAL TERMS AND DEFINITIONS. 
Simple, (Simplex) as applied to leaves is used in opposition to 
compound, which denotes a leaf composed of more than 
one leaflet, whereas the simple leaf consists of a single leaf, 
either lobed or undivided. 
SiNUATED, {Sinuatum) leaves are so called, when the margins are 
cut into wide rounded openings ; as the oak, &c. 
Solid, (Solidus) stems are so called that have no cavity. 
Solitary, {Solitarius) applied to peduncles when there is only one 
on a plant, or when they stand singly in the same place. 
SpADIX, an elongated receptacle: example, the Arum Maculatum. 
Sparsa, vide Scattered. 
Spathe, or Sheath, (Spatha) a calyx which forms a kind of hood 
or sheath, at a greater or less distance from the flower, 
and bursts longitudinally. 
SpaTULATe, {Spatulatum) applied to leaves of a roundish figure on 
the upper part, tapering and linear at the base. 
Spike, {Spica) a species of inflorescence, in which the flowers stand 
sessile along a common peduncle, and are either placed 
alternately and crowded together, or in separate groups. 
Spica, vide Spike. 
Spicula, vide Spikelet. 
Spikelet, {Spicula) is formed of many small florets, ranged on a 
little stalk in one calyx : this term is applied exclusively 
to grasses. 
Spina, vide Thorn. 
Spinous, {Spinosum) applied to leaves, the margins of which are 
beset with thorns. 
Stamen, (Stamen) a constituent part of a flower, situated within 
the corolla, and generally consisting of two parts, the fila- 
ments and the anther. 
Standard, vide Banner. 
Stigma, (Stigma) an essential part of the pistillum, situated on 
the top of the style or germen ; the stigma is variously 
formed, being either a fine point, a round head, or lobed ; 
generally downy, often hollow and gaping, and always 
more or less moist. 
Stipe, (Stipes) the stem of a frond ; also applied to the fungus 
tribe. 
Stipule, (Stipula) a membranous leafy appendage, placed at that 
part of the stem whence the leaf or footstalk arises. Sti- 
pules vary in number, being solitary or in pairs ; in situa- 
tion, being either external witli regard to the leaf or foot- 
