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SiluridaeCatfish Family. Includes wels and glass catfishes. Comprised of 11 genera and about 170 species that occur across much of Europe and Asia. Characterized by a compressed body; adipose fin is lacking, an anal fin is very long and a short dorsal fin (often lacking) without a spine. | |
SimaroubaceaeQuassia Family. Comprised of 25 genera of pantropical trees. Members have leaves that alternate along the stem and are composed of a number of leaflets arranged along an axis. | |
SimpleIn reference to a leaf, not compound. | |
SolanaceaeNightshade or Potato Family. Comprised of 102 genera and about 2,280 species, many of considerable economic importance as food and drug plants. Members are annual, biennial or perennial and are usually herbs, though some species grow as shrubs or small trees. Members of this family usually have regular flowers with five petals, alternate leaves, five stamens attached to the corolla tube, and a superior ovary containing many yellowish disc-shaped seeds. | |
SpikeAn elongate inflorescence with sessile or barely stalked flowers arising from a central stalk. | |
SporangiaSac-like structures which store spores. | |
SporeA small, usually single-celled reproductive body that is produced by non-flowering organisms including ferns and fungi. | |
SporocarpA specialized structure in aquatic ferns whose primary function is the production and release of spores. | |
StamenThe male organ of a flower. | |
StemThe plant axis that bears buds and shoots with leaves and, at its basal end, roots | |