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180 Terms used in Bionomenclature
sine numero, [s.n.]: sometimes used in citing lists of specimens after a
collector’s name to indicate the absence of a collector’s number
sine typo: without a type.
single cross: see F1 hybrid.
sister clade: (phyl.) one member of a pair of clades originating when a
single lineage splits into two; sister clades thus share an exclusive
common ancestry and are mutually most closely related to one
another in terms of common ancestry.
sociation: (phyt., obsol.) an hierarchical rank of a syntaxon, equivant to
facies but not covered by the Code.
socion: (phyt., obsol.) an hierarchical rank of a syntaxon, equivant to
synusia but not covered by the Code.
solutotype: (zool., unoff.) a type kept in a liquid of extremely high or low
pH so that it has dissolved into the solution (!).
sortotype,[sortotypus]: see conculta.
sp.: species (q.v.); often used after a generic name where the identity of the
species is unknown.
sp. indet., [sp. ind., species indeterminate]: used to indicate that the
species to which a specimen belonged could not be identified.
sp. nov.: species nova (q.v.).
sp. rev.. [species revivisco]: a species revived or reinstated, e.g. from
synonymy.
spec.: see specimen.
special classification: (prok., unoff.) a classification derived for a special
purpose, i.e. ones which are based on a selection of characters
pertinent to a selected purpose.
Special Committee: (bot.) a body appointed appointed by an International
Botanical Congress to address a particular question, usually an issue
not resolved by a Congress.
Special Code: (bio.) one of the Codes dealing with particular groups of
organisms; a Code other than the BioCode.