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Key to Abbreviations, etc.

A - androecium, stamens.
A = K, A = 2xK - stamens the same number as sepals, twice as many as sepals.
APG - Angiosperm Phylogeny Group.
C - corolla, petals.
ca - circa, about.
cf. - compare.
E. - East.
esp. - especially.
G - gynoecium.
G [2-5] - gynoecium with 2-5 connate (square brackets) and superior (underlining) carpels.
inc. - including
italics - inconsistently applied, refer to possible synapomorphies or derived characters.
K - calyx, sepals.
many - over 15 or so.
m.y.a. or m.y.o. - million years ago, million years old.
N. - North.
n - haploid chromosome number.
nodes 1:1, 3:3 - node one trace from one gap, three traces from three gaps, etc.
nom. cons. - nomen conservandum, nomenclaturally conserved name.
P - perianth.
S. - South.
s. l. - sensu lato (broad sense).
s. str. - sensu stricto (narrow/strict sense).
T - tepals.
usu. - usually
W. - West.
x - base chromosome number for group.
+ - present.
0 - absent.
? - uncertain or unknown.
[text included] - in a characterisation, explanation.
[#] - carpels connate.
(  ) - in order or other high level characterisations, feature of sporadic occurrence.
(  ) - in lowest level characterisations, feature usually only occasional or rare, sometimes common but not an apomorphy.
[  ] - in general text of characterisations, containing an definition or gloss.
G (3-5) (example) - means that the carpels are connate.
G (3-5) (example) - means that the carpels are connate and superior.
2/60 (example) - after characterisations, number of genera/number of species.
765+ (example) - at least 765.