Dictionary
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Word	Description
Scale	One of the fleshy parts which makes up the true bulb.
Secondary colors	The colors obtained by mixing equal amounts of two primary colors. The secondary colors in pigment are orange, green, and violet; in light, they're magenta, yellow, and cyan. Also see intermediate colors, which are sometimes called tertiary colors.
Senescence	The aging process of plants. Also applied to the dying parts of a plant that is going dormant for the season.
Sepal	One of the segments which make up the calyx of a flower, the outer whorl or the perianth, often protecting the bud.
Sessile	With no pedicel, no footstalk, the flower being directly on the stalk.
Shade	A color to which black or another dark hue has been added to make it darker. For example, black added to green makes it a darker shade of green. Value changes from pure hues are called shades and tints. You can see this in the color wheel.
Sharp sand	Not fine sand, coarse gravel used to air the soil.
Single early group	Single flowered cultivars, mainly short stemmed and early flowering.
Single late group	Single flowered cultivars, mainly short stemmed and late flowering.
Species	A population or series of populations whose individuals have the potential to freely breed with one another and that is discontinuous in variation from other populations or series of populations; a fundamental category of taxonomic classification, ranking
Sphere	Atmosphere, special feel, environment.
Spike	A form of simple inflorescence with the flowers sessile or nearly so upon a more or less elongated common axis.
Sport	A sport is a spontaneous mutation in the tulip fields as opposed to a hybrid developed by man.
Stalk	A short, supporting axis.
Stamen	Collective noun referring to both the filament and the anther.
Standard	The inner perianth segments of an iris flower, often held erect.
Sterile	Used to describe a flower that is incapable of producing seeds.
Stigma	The tip of the female part of a flower which receives the pollen.
Stolon	An underground stem; often at the end of such growth another bulb is produced.
Style	That portion of the female organ of the flower between the ovary and the stigma.
Subsoil	The layer of soil below the topsoil which is usually less fertile and of poorer texture.
Subspecies	Name given to a group of plants within a species which do not differ enough to merit species ranking.
Syngenesious	Stamens united into a cylindrical form by the anthers.
Synonym	A name used for a plant but now unused or superseeded.