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Term	Definition
Staminal tube	A floral tube formed by the fusion of androecial tissue, usually the filaments.
Staminal tube	A tube formed by fusion of staminal tissue.
Staminal tube extension	An expansion from the abaxial side of the staminal tube of species of Cariniana.
Staminal tube lower chamber	Differentiation in the staminal tube of species of Grias defined by the size and orientation of lower part of the tube in comparison to the upper part of the tube.
Staminal tube rim	The uppermost edge of a staminal tube.
Staminal tube upper chamber	Differentiation in the staminal tube of species of Grias defined by the size and orientation of lower part of the tube in comparison to the upper part of the tube.
Staminal tube zygomorphic	The prolongation of one side of the staminal tube of species of Cariniana.
Staminate flower	Referring to unisexual flowers with functional stamens but without functional gynoecia (pistillodes may be present). Same as male flower.
Staminode	A sterile stamen, sometimes modified such that it does not resemble a stamen; e.g., Cannaceae; in the Lecythidaceae, a sterile stamen with pollen that does not germinate.
Staminode	In the Lecythidaceae, a sterile stamen (= staminode) with pollen that does not germinate. The pollen of the yellow antherodes may serve as a reward for pollinators, especially bees. As far as we know, white anthers indicate the presence of fertile pollen and yellow antherodes indicate the presence of sterile pollen.
Staminodes geniculate.	Abruptly bent like a flexed knee.
Standard	The upper, broad petal of Fabaceae subfamily Papilionoideae (legumes with pea-like flowers. Standard is prefered over the synonyms banner, flag, and vexillum petal.
Steady state phenology	A flowering strategy in which a few flowers are produced each day over most of the year during the reproductive life cylcle of the plant.
Stellate	Star-shaped, usually referring to trichomes.
Stellate	Star-shaped, usually referring to trichomes.
Stem	The main ascending axis of a plant.
Stem	The main ascending axis of a plant.
Stem hollow	Referring to a stem that does not have tissue in the center, e.g., the hollow stems of grasses.
Stem solid	Referring to a stem that has tissue in the middle, i.e., the cortex is solid.
Sterile hybrid	A hybrid that does not produce viable seeds.
Stick-tight	A fruit or seed that adheres to substrates such as fur or clothing.
Sticktight	A plant diaspore (e.g., an entire fruit, a fruit surrounded by calyx, a seed, etc.) that attaches by barbs or hoos to and is dispersed by an animal. Sticktights are often associated with weedy habitats and frequently attach to the clothing of humans. See "pega-pega" for Spanish translation.
Stigma	The apex of the style and the place where the pollen is carried to by pollination agents. The pollen grains germinate on the stigma and grow down the style to the ovule where a sperm from a pollen grain fertilizes an egg in an ovule.
Stigma	The part of the gynoecium receptive to pollen usually located at the summit of the style.
Stigma convoluted	A stigma that appears to coiled or twisted.

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