HISTORY OF THE GENUS EPIPREMNUM
Schott was established in 1857 (Schott, 1857). Based on the only
species known to him, E. mirabile Schott [= E.
pinnatum] Schott defined Epipremnum by unilocular
ovaries with a single intrusive parietal placenta bearing two sub-basal
ovules. A floral diagnosis was figured in Genera Aroidearum (Schott,
1858, t. 79). The current circumscription of
Epipremnum has ovule number
ranging from two [most species, but see E.
ceramense (Engl. K. Krause) Alderw. and E.
falcifolium Engl.] to eight [E. amplissimum (Schott)
Engl., Australia, New Guinea, W. Pacific] and albuminous strongly
curved seeds with a bony, smooth to ornamented testa. However, as
noted by Hay (1990, 1993) the established reliance on gynoecial
characters to define old world genera in tribe Monstereae [Amydrium
Schott (including Epipremnopsis Engl.), Epipremnum,
Rhaphidophora Hassk. and Scindapsus Schott] requires
reassessment since it does not take into account a wealth of shared
vegetative characters in the four genera presently recognized. An
in-depth discussion of this is beyond the scope of this paper but
individual species notes highlight particular examples and
an introduction to the problems associated with these characters
and the present generic circumscription in old world Monstereae
can be gained from Blanc (1978, 1981), Hay (1986, 1990), Hay &
Mabberley (1991), Madison (1977), Mayo, Bogner & Boyce (1997)
and Ray (1987, 1988, 1990).
(1863) established the genus Anthelia with a single species,
A. nobilis Schott, for a climbing aroid from Maluku with
incompletely bilocular ovaries and four ovules (two per partial
locule). The generic boundaries of Anthelia fall within the
current circumscription of Epipremnum.