Revision of Passiflora Subgenus Decaloba ... - Passion Flowers

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the seashore, from sea level to 1600 m, but it has also been collected in the
Hawaiian Islands, where it is introduced (Fig. 8.7). In the Greater Antilles, P.
suberosa ssp. suberosa is commonly found in and along the edges of moist
forests, primarily at higher elevations. It is relatively common on all of the islands
of the Greater Antilles, except for Jamaica where it is very rare. In the Bahamas
and the Lesser Antilles, it does occur at high elevations but primarily occurs at
lower elevations and is found in dry to moist forests. Passiflora suberosa ssp.
litoralis has the widest geographic range of the taxa in supersection Cieca (Fig.
8.7). It grows in and along the edges of semideciduous to deciduous, dry to
moist tropical forests and in secondary successional areas, both inland and near
the seashore, from sea level to 2800 m, from northern México, through Central
America, to central Argentina and Brazil. In the Old World tropics it has been
introduced in Australia, Fiji, French Overseas Territory of New Caledonia, India,
Indonesia, South Africa, Spain, Sri Lanka, Taiwan, and Uganda.
Speciation
As defined in Judd et al. (2002:113), speciation is "the permanent severing of
population systems so that migrants from one system would be at a
disadvantage when entering another.” This could result from a lack of mates for
the migrants due to reproductive isolation in the two systems or an inability of the
migrant to compete well with members of another system. Often the migrant is
unable to withstand the pathogens, pests, and predators in the new system and
has trouble attracting pollinators and agents of dispersal. Ultimately, speciation
leads to the origin of new and independent evolutionary lineages (Judd et al.,
2002).